taxonID	type	description	language	source
EF5DBD3EFFCACC6EFCE511ABFA20F9EE.taxon	description	compressus, Parmophorus – Deshayes, 1861 - DescrCoqFoss: 258, 6, pl. 6, figs 41 - 44. — Type localities: Boursault & Parnes. — Type age: Eocene (Lutetian). — Type species (M) of Proscutum P. Fischer, 1885. —	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFFCBCC6FFF4C11C5FDDBF9A9.taxon	description	radiolatus, Parmorphorus – Deshayes, 1861 - DescrCoqFoss: 254, 4, pl. 4, figs 9 - 11. — Type locality: Mouy. — Type age: Eocene (Lutetian). —	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFFF5CC51FF4C16FBFD95FC52.taxon	synonymic_list	Tomostoma altavillensis neritoides (Deshayes, 1824) (Symonds & Pacaud 2010).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFFF5CC51FF4C178EFE61FAB0.taxon	synonymic_list	Clithon (Pictoneritina) nucleus (Deshayes, 1832) (Vrinat 2019: 48 - 49, pl. 4, figs 1 - 6, pl. 5, figs 1 - 6). Clithon nucleus (Deshayes, 1832) (Pacaud herein).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFFF6CC52FCE51237FC42F918.taxon	type_taxon	— Type species (M): Melania striata J. de C. Sowerby, 1814. Incorrectly listed in some references as “ Deshayes in Terquem & Jourdy, 1869 ”. Valid genus.	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFFF7CC53FF4C136EFE99F85A.taxon	discussion	See also above under polita, Ampullaria, an unnecessary replacement.	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFFF8CC5CFCE511BFFB77F981.taxon	materials_examined	— Type locality: Arroyo de Peam-Chelang, Cambodia. — Type age: Recent. — Current status: taxon inquirendum.	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFFFDCC59FCE51600FBA1FC1E.taxon	discussion	The genus Globulocerithium Bouniol, 1981, was proposed in violation of ICZN Code Art. 13.3 and not subsequently made available (ICZN Code Art. 16.1); this situation has been resolved in a separate publication by one of us (Pacaud 2023), with the genus dating from this paper.	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFFE0CC44FCE51760FAC2FCD0.taxon	type_taxon	— Type species (M): Diastoma costellata (Lamarck, 1804) [Melania].	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFFE0CC44FCE5170FFA03FBA6.taxon	type_taxon	— Type species (M): Melania marginata Lamarck, 1804. France.	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFFE3CC47FF4C179CFDB2FBFE.taxon	materials_examined	— Type locality: Philippine Islands. — Type age: Recent. A Paris Basin species of Defrance (1823 b), which Deshayes tentatively recorded as living in the Philippine Islands (Lyell 1833: 56).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFFE3CC47FEC810D4FDF3F9F4.taxon	discussion	REMARK Note that Quoya J. E. Gray, 1839, is not to be confused with Quoya Labbé, 1934, a synonym of Peronia J. Fleming, 1822, in the Onchidiidae (Dayrat et al. 2020: 42).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFFE8CC4CFF4C1651FD95FD17.taxon	materials_examined	— Type material: MNHN-IM- 2000 - 36464, 2 syntypes.	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFFE8CC4CFF4C11C7FDC0F932.taxon	type_taxon	— Type species (OD): Solarium disjunctum Lamarck, 1804.	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFFE8CC4CFCE516F8FC02FCBF.taxon	materials_examined	— Type locality: Peloponnese Peninsula, Greece. — Type age: Subapennine Formation, Pliocene. Nomen nudum in Virlet (1833: 162).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFFE9CC4DFCE5123AFA1CF907.taxon	materials_examined	— Type locality: Senegal. — Type age: Recent. — Type material: MNHN-IM- 2000 - 25099, 3 syntypes. —	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFFEACC4EFF4C134DFE74F82E.taxon	materials_examined	— Type locality: Parnes. — Type age: Eocene (Lutetian).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFFEACC4FFCE513CCFDFEFE6C.taxon	discussion	so Deshayes’ usage was a new combination, not a new species. Deshayes stated that this material was the Recent analog of Brocchi’s fossil species [“ l’analogue vivant de la coquille fossile figurée par Brocchi ”], so that Deshayes’ usage of “ Nob. ” [nobis or new] for this species was in error. Brocchi’s species is limited to the Early Miocene to Early Pleistocene of the Mediterranean and is not known living (Landau et al. 2013: 64), so Deshayes’ living material may be referrable to another Red Sea turritellid.	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFFEDCC49FCE5178EFBF6FBF6.taxon	materials_examined	— Type locality: none given. — Type age: Recent.	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFFEDCC49FF4C1325FDFAF85A.taxon	materials_examined	— Type localities: Liancourt-Saint-Pierre, Parnes, Saint-Félix & Vaudancourt. — Type age: Eocene (Lutetian).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFFEECC4AFF4C10C3FDF1FAAC.taxon	materials_examined	— Type locality: Damery. — Type age: Eocene (Lutetian).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFFEECC4AFF4C1143FE05FA06.taxon	materials_examined	— Type locality: Thiverval-Grignon. — Type age: Eocene (Lutetian). — Type material: UCBL-EM 32449, syntype.	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFFEECC4AFCE51556FB11FE15.taxon	materials_examined	— Type locality: Thiverval-Grignon. — Type age: Eocene (Lutetian).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFFEECC4AFCE51058FB6BFB1E.taxon	materials_examined	— Type locality: Thiverval-Grignon. — Type age: Eocene (Lutetian).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFFEECC4AFCE513F1FA35F85A.taxon	materials_examined	— Type locality: Chaumont-en-Vexin. — Type age: Eocene (Lutetian).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFFEECC4AFF4C1371FDF1F837.taxon	materials_examined	— Type locality: Hermonville. — Type age: Eocene (Lutetian). — Type material: UCBL-EM 32421, syntype.	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFFEECC4AFCE510BCFBFEFAFB.taxon	materials_examined	— Type locality: Thiverval-Grignon. — Type age: Eocene (Lutetian). — Type material: UCBL-EM 32457, holotype.	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFFEFCC4BFF171247FC67FE44.taxon	description	microstoma, Cerithium – Deshayes, 1833 - DescrCoqFoss: 412, 32, pl. 59, figs 32 - 34; 1865 - DescrCoqFoss: 177 - 178. — Type locality: Lévemont. — Type age: Eocene. This species does not occur in the Eocene of Lévemont and is instead from the Oligocene (probably Rupelian) (Deshayes 1865: 177). — Current status: synonym of Potamides lamarckii Brongniart, 1810, type species (M) of Potamides Brongniart, 1810 (Deshayes 1865: 177). sparnacense, Cyclostoma – Deshayes, 1863 - DescrCoqFoss: 883, 57, pl. 57, figs 37 - 39. — Type locality: Mont-Bernon (Épernay). — Type age: Eocene (Ypresian). — Current status: Dissostoma sparnacense (Deshayes, 1863) (Wenz 1923: 836; Le Renard & Pacaud 1995: 97). variabile, Cyclostoma – Deshayes, 1824 - DictClass: pl. [84], fig. 3 ab; 1824 - DictClass 5: 233 - 234, as C. variabile; 1831 - DictClass 17: 121. — Type locality: Africa; Delalande; Zélé. — Type age: Recent. Preoccupies Cyclostoma variabilis C. B. Adams, 1849, currently in use for a Jamaican species of Adamsiella [Annulariidae], which needs to be replaced. — Current status: synonym of Tropidophora ligata (O. F. Müller, 1774) (D. Herbert, pers. comm. to P. Bouchet, April 25, 2020).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFFEFCC35FC7B1649FA03F85A.taxon	description	matheroni, Natica – Deshayes, 1864 - DescrCoqFoss: 47 - 48, 67, pl. 67, figs 20 - 21. — Type localities: Aizy-Jouy, Sermoise, Mercin-et-Vaux, Coeuvres-et-Valsery & Retheuil. — Type age: Eocene (Ypresian). — Bayan (1870: 24) renamed the Deshayes species as Natica velledae in the mistaken view that it was a junior homonym of Natica matheroniana d’Orbigny, 1842. — Current status: Natica matheroni Deshayes, 1864 (Pacaud 2019: 123).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFFEFCC35FC7B1649FA03F85A.taxon	description	neritiformis, Natica – Deshayes, 1835 b: 157 - 158, pl. 26, figs 10 - 11. — Type locality: Peloponnese Peninsula, Greece. — Type age: Cretaceous? – Current status: taxon inquirendum. obliquata, Natica – Deshayes, 1864 - DescrCoqFoss: 54 - 55, 70, pl. 70, figs 12 - 13, non Morris, 1854, nec Hall & Meek, 1856. — Type localities: Thiverval-Grignon, Parnes, Fontenay-en-Vexin, Mouchy-le-Châtel, Gomerfontaine, Chambors, Damery, Cumières & Hermonville. — Type age: Eocene (Lutetian). — Current status: synonym of Cochlis specialis (Deshayes, 1864) (Pacaud herein).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFFEFCC35FC7B1649FA03F85A.taxon	description	pellucidus, Sigaretus – Deshayes, 1825 - DescrCoqFoss: 14, pl. 23, figs 13 - 14; 1832: 184. — Type locality: Chaumont-en-Vexin. — Type age: Eocene (Lutetian). 1864 - DescrCoqFoss: 90. — Current status: nomen dubium.	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFFEFCC35FC7B1649FA03F85A.taxon	description	alapapilionis, Natica – Deshayes, 1838 - HistNatAnim 2: 647, ex Chemnitz ms. Made available, as Cochlis alapapilionis Röding, 1798, now Glyphepithema alapapilionis (Röding, 1798). levesquei, Sigaretus – Deshayes, 1864 - DescrCoqFoss: 89, 69, pl. 69, figs 23 - 26. Originally introduced by Récluz, 1843, and now Sigaretotrema clathrata [Récluz, 1843] levesquei (Récluz, 1843).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF92CC36FF3E162CFE74FCE2.taxon	description	cymbium, Carinaria – S. P. Woodward, 1851: 97; 1856: 484, “ Desh. ” Error for Argonauta cymbium Linnaeus, 1758, a cephalopod. The name had sometimes been misused for species of Carinaria, and Woodward (1856: 484) later said that Carinaria cristata (Linnaeus, 1767) [Patella] had been intended.	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF92CC36FF1D14A2FCA4FDBF.taxon	description	Firoloides – Deshayes, 1830 b-EncyMeth: 130. Incorrect subsequent spelling of Firoloida Lesueur, 1817. edwardsii, Firola – Deshayes, 1840 - RegAnim: pl. 39, fig. 1. — Type locality: none given. — Type age: Recent. — Current status: probable synonym of Pterotrachea coronata Forsskål, 1775 (Spoel 1976: 160).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF92CC37FF3117EEFEB6FA36.taxon	description	angustissimus, Triphoris – Deshayes, 1863: 104 - 105, pl. 12, figs 1 - 2. — Type locality: La Réunion. — Type age: Recent. — Type material: MNHN-IM- 2000 - 9488, neotype (M. Jay, 2007). — Current status: Triphora angustissima Deshayes, 1863 (M. Jay 2007: 32, figs 4 - 6, 46; Albano et al. 2023: 16, fig. 2).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF92CC37FF3117EEFEB6FA36.taxon	description	costulatus, Triforis – Deshayes, 1864 - DescrCoqFoss: 82, pl. 82, figs 20 - 21; 1865 - DescrCoqFoss: 242. — Type locality: Parnes. — Type age: Eocene (Lutetian). — Current status: Triphora (Triphora) costulata Deshayes, 1864 (Le Renard & Pacaud 1995: 109).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF92CC37FF3117EEFEB6FA36.taxon	description	minuatus, Triforis – Deshayes, 1864 - DescrCoqFoss: 81, pl. 81, figs 40 - 44; 667; 1865 - DescrCoqFoss: 240 - 241. — Type locality: Thiverval-Grignon, Parnes & Chaussy. — Type age: Eocene (Lutetian). — Current status: Triphora (Norephora) minuata Deshayes, 1864 (Le Renard & Pacaud 1995: 109; Pacaud 2008: 59). mirificus, Triphoris – Deshayes, 1863: 104, pl. 11, figs 32 - 33. — Type locality: La Réunion. — Type age: Recent. — Type material: MNHN-IM- 2000 - 9491, neotype (M. Jay, 2007). — Current status: Triphora mirifica Deshayes, 1863 (M. Jay 2007: 39, figs 20 - 22, 52; Boutet et al. 2020: 226; Albano et al. 2023: 22 - 24, fig. 7). obliquatus, Triforis; see: grignonensis, Triforis.	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF92CC37FF3117EEFEB6FA36.taxon	description	triliratus, Triphoris – Deshayes, 1863: 102, pl. 11, figs 27 - 28. — Type locality: La Réunion. — Type age: Recent. — Type material: MNHN-IM- 2000 - 1576, syntype; MNHN-IM- 2000 - 1577, 3 syntypes; MNHN-IM- 2000 - 1578, syntype. — Current status: Virola trilirata (Deshayes, 1863) (M. Jay 2007: 40, figs 28 - 30, 40, 41, 55; Albano et al. 2023: 27, fig. 11; generic assignment from MolluscaBase).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF93CC30FF6811B4FD28FD3E.taxon	description	inaequiliratum, Cerithium – Deshayes, 1864 - DescrCoqFoss: 74, pl. 74, figs 23 - 24; 1865 - DescrCoqFoss: 224. — Type locality: Chaumont-en-Vexin. — Type age: Eocene (Lutetian). Seila (Notoseila) inaequilirata (Deshayes, 1864) (Le Renard & Pacaud 1995: 108). minuatum, Cerithium – Deshayes, 1864 - DescrCoqFoss: 75, pl. 75, figs 3 - 4; 1865 - DescrCoqFoss: 202 - 203. — Type locality: Chaussy. — Type age: Eocene (Lutetian). — Current status: Cerithiopsis (Cerithiopsis) minuata (Deshayes, 1864) (Le Renard & Pacaud 1995: 108; Pacaud 2008: 60). mundulum, Cerithium – Deshayes, 1864 - DescrCoqFoss: 79, pl. 79, figs 31 - 32; 1865 - DescrCoqFoss: 222. — Type localities: Cuise-la-Motte, Laon, Mercin-et-Vaux, Laversine & Hérouval. — Type age: Eocene (Ypresian). — Current status: Seila (Notoseila) mundula (Deshayes, 1864) (Le Renard & Pacaud 1995: 108; Jeffery & Tracey 1997: 82, 94, pl. 9, fig. 14; Pacaud 2008: 60). mutatum, Cerithium; see below: variatum, Cerithium. piettei, Cerithium – Deshayes, 1864 - DescrCoqFoss: 76, pl. 76, figs 16 - 17; 1865 - DescrCoqFoss: 202. — Type locality: Jeurre. — Type age: Oligocene (Rupelian). — Current status: synonym of Cerithiopsis henckeliusii (Nyst, 1836) (Pacaud herein). praelongum, Cerithium – Deshayes, 1864 - DescrCoqFoss: 79, pl. 79, figs 4 - 6; 1865 - DescrCoqFoss: 209 - 210. Replacement name for Cerithium canaliculatum Melleville, 1843 (Melleville 1843: 104 - 105 [59, 85], pl. 7, figs 12 - 13), non Bruguière, 1792. — Type locality: Laon. — Type age: Eocene (Ypresian). — Current status: Seila (Seila) praelonga (Deshayes, 1864) (Le Renard & Pacaud 1995: 108; Pacaud 2008: 60).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF93CC30FF6811B4FD28FD3E.taxon	description	quadrifidum, Cerithium – Deshayes, 1833 - DescrCoqFoss: 396, 30, pl. 55, figs 18 - 20; 1865 - DescrCoqFoss: 223. — Type localities: Thiverval-Grignon & Parnes. — Type age: Eocene (Lutetian). — Current status: Seila (Seila) quadrifida (Deshayes, 1864) (Le Renard & Pacaud 1995: 108; Pacaud 2008: 60). trifarium, Cerithium – Deshayes, 1864 - DescrCoqFoss: 75, pl. 75, figs 9 - 10; 1865 - DescrCoqFoss: 221. — Type localities: Chaussy, Valmondois & Le Guépelle. — Type age: Eocene (Lutetian-Bartonian). — Current status: Seila (Notoseila) trifaria (Deshayes, 1864) (Le Renard & Pacaud 1995: 108; Pacaud 2008: 60). trigeminatum, Cerithium – Deshayes, 1864 - DescrCoqFoss: 74, pl. 74, figs 18 - 19; 1865 - DescrCoqFoss: 204. — Type localities: Mouchy-le-Châtel, Chaussy & Le Guépelle. — Type age: Eocene (Lutetian-Bartonian). — Current status: Cerithiopsis (Cerithiopsis) trigeminata (Deshayes, 1864) (Le Renard & Pacaud 1995: 108; Pacaud 2008: 60).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF94CC31FF2A16AFFD5CFE8F.taxon	description	difficile, Cerithium – Deshayes, 1864 - DescrCoqFoss: 74, pl. 74, figs 7 - 9; 1865 - DescrCoqFoss: 161. — Type locality: Le Guépelle. — Type age: Eocene (Bartonian). — Current status: Eocolina difficilis (Deshayes, 1864) (Le Renard & Pacaud 1995: 109). fayellense, Cerithium – Deshayes, 1864 - DescrCoqFoss: 73, pl. 73, figs 34 - 37; 1865 - DescrCoqFoss: 156. — Type locality: Le Fayel. — Type age: Eocene (Bartonian). — Current status: Eocolina fayellensis (Deshayes, 1864) (Le Renard & Pacaud 1995: 109). inclitus, Triforis “? ” – Deshayes, 1864 - DescrCoqFoss: 81, pl. 81, figs 33 - 34; 1865 - DescrCoqFoss: 246, as T. “ inclytus ”. — Type locality: Vaudancourt. — Type age: Eocene (Lutetian). Laeocochlis inclyta (Deshayes, 1864) (Le Renard & Pacaud 1995: 108; Pacaud 2008: 61, as “ Laiocochlis ”, an incorrect original spelling of Laeocochlis Dunker & Metzger, 1874. — Current status: Laeocochlis inclita (Deshayes, 1864) (Pacaud herein). inclytus, Triforis – see inclitis, Triforis indecoratum, Cerithium – Deshayes, 1864 - DescrCoqFoss: 75, pl. 75, figs 13 - 14; 1865 - DescrCoqFoss: 166. — Type locality: Thiverval-Grignon. — Type age: Eocene (Lutetian). — Current status: Colina indecorata (Deshayes, 1864) (Le Renard & Pacaud 1995: 109; Pacaud 2008: 60). jeurense, Cerithium – Deshayes, 1864 - DescrCoqFoss: 77, pl. 77, figs 26 - 28; 1865 - DescrCoqFoss: 201 - 202. — Type locality: Jeurre. — Type age: Oligocene (Rupelian). — Current status: synonym of Vatopsis bimonilifera (Sandberger, 1859) (Pacaud herein).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF94CC31FF2A16AFFD5CFE8F.taxon	description	quinquesulcatum, Cerithium – Deshayes, 1864 - DescrCoqFoss: 75, pl. 75, figs 7 - 8; 1865 - DescrCoqFoss: 225. — Type locality: Thiverval-Grignon. — Type age: Eocene (Lutetian). — Current status: Colina quinquesulcata (Deshayes, 1864) (Le Renard & Pacaud 1995: 109; Pacaud 2008: 61). tenue, Cerithium – Deshayes, 1833 - DescrCoqFoss: 402 - 403, 32, pl. 59, figs 9 - 12; 1865 - DescrCoqFoss: 160. — Type locality: Thiverval-Grignon. — Type age: Eocene (Lutetian). — Current status: Colina tenuis (Deshayes, 1864) (Le Renard & Pacaud 1995: 109; Pacaud 2008: 61, as “ C. tennis ”).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF95CC32FF3E1502FEB8FDE9.taxon	description	Tubispirata – Deshayes, 1861 - DescrCoqFoss: 279 - 290. Emendation or spelling error for Tubispiracea Deshayes, 1832, q. v. Listed by Bieler & Petit (2011: 12). anguillinus, Serpulorbis – Deshayes, 1861 - DescrCoqFoss: 289 - 290, 9, pl. 9, figs 16 - 17, pl. 10, figs 5 - 6. — Type localities: Mercin-et-Vaux, Laon, Cuise-la-Motte, Mons-en-Laonnois & Hérouval. — Type age: Eocene (Ypresian). — Type species (OD) of Anguillospira Cossmann, 1912. Vermicularia (Anguillospira) anguillina (Deshayes, 1861) (Le Renard & Pacaud 1995: 105). Listed by Bieler & Petit (2011: 24). Anderson & Allmon (2023: 8) referred this taxon to the Siliquariidae. – Current status: Anguillospira anguillina (Deshayes, 1861) (Pacaud herein).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF95CC32FF3E1502FEB8FDE9.taxon	description	porrectus, Serpulorbis – Deshayes, 1861 - DescrCoqFoss: 288 - 289, 9, pl. 9, fig. 18. — Type localities: Acy-en-Multien, Crouy & La Ferté-sous-Jouarre. — Type age: Eocene (Bartonian). — Type material: UCBL-EM 32399, syntype from Acy-en-Multien. Vermicularia (Anguillospira) porrecta (Deshayes, 1861) (Le Renard & Pacaud 1995: 105). Listed by Bieler & Petit (2011: 53). — Current status: Anguillospira porrecta (Deshayes, 1861) (Pacaud herein).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF96CC32FEC316EDFD49F916.taxon	description	buccinoides, Rissoa – Deshayes, 1835 b: 151 - 152, pl. 19, figs 40 - 42; 1838 - HistNatAnim 2: 465 - 466; 1843 - HistNatAnim 3: 435. — Type locality: Peloponnese Peninsula, Greece. — Type age: Recent. Synonym of Alvania discors (T. Brown, 1818) [Turbo] (Sabelli et al. 1990: 149, as “ pars ” and Brown as “ Allan ”).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF96CC33FEC8128EFE90FE41.taxon	description	Pacaud 1995: 100; Pacaud 2008: 53; Lozouet 2015: 17; Tréguier & Pacaud 2018: 212).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF97CC33FC9C1582FA1CFC30.taxon	description	moreleti, Cyclostoma (Hydrocoena) – Deshayes, 1863: 84, pl. 10, figs 7 - 8, non L. Pfeiffer, 1850. — Type locality: La Réunion. — Type age: Recent. — Current status: synonym of Omphalotropis rubens (Quoy & Gaimard, 1832) [Cyclostoma] (Nevill 1870: 415).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF97CC33FC6B17C3FB05F9E2.taxon	description	Bithinia is a subsequent incorrect subsequent spelling of Bithynia Leach, 1818, by J. E. Gray, 1821.	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF9ACC3EFF361182FBDDFC00.taxon	description	pulvis, Bithinia (Nematura) – Deshayes, 1862 - DescrCoqFoss: 516, 34, pl. 34, figs 38 - 40. — Type localities: Ay, Vauxbuin, Mont-Bernon (Epernay), Disy & Rilly-la-Montagne. — Type age: Eocene (Ypresian). — Type material: UCBL-EM 32532, syntype from Ay. — Current status: Stenothyra pulvis (Deshayes, 1862) (Le Renard & Pacaud 1995: 99, their material as “ non ”). ●	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF9ACC3FFC57178FFB5DF9D4.taxon	description	propinqua, Adeorbis – Deshayes, 1862 - DescrCoqFoss: 439, 29, pl. 29, figs 8 - 13. — Type localities: Ferme de l’Orme & Thiverval-Grignon. — Type age: Eocene (Lutetian). — Current status: synonym of Circulus bicarinatus (Lamarck, 1804) [Planorbis] (Pacaud herein).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF9ACC3FFC57178FFB5DF9D4.taxon	description	rotellaeformis, Teinostoma – Deshayes, 1864 - DescrCoqFoss: 921, 63, pl. 63, figs 21 - 23. — Type localities: Thiverval-Grignon, Parnes, Gomerfontaine, Saint-Félix, Mouchy-le-Châtel, Boursault, Damery, Saint-Thomas, Hermonville, Chaussy, Montmirail & Acy-en-Multien. — Type age: Eocene (Lutetian-Bartonian). — Current status: Teinostoma (Teinostoma) rotellaeforme Deshayes, 1864 (Le Renard & Pacaud 1995: 87; Pacaud 2008: 55).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF9ACC3FFC57178FFB5DF9D4.taxon	description	trigonostoma, Teinostoma – Deshayes, 1864 - DescrCoqFoss: 925, 63, pl. 63, figs 5 - 8. — Type locality: Caumont. — Type age: Eocene (Bartonian). — Current status: Teinostoma (Teinostoma) trigonostoma Deshayes, 1864 (Le Renard & Pacaud 1995: 87).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF9CCC39FEC61768FD53F9F9.taxon	description	eburneus, Stylifer – Deshayes, 1863: 57 - 58, pl. 7, fig. 25. — Type locality: La Réunion. — Type age: Recent. — Type material: MNHN-IM- 2000 - 5653, 2 syntypes. — Current status: synonym of Echineulima mittrei (Petit de la Suassaye, 1851), which is figured in Okutani (2017: 829, pl. 103, fig. 11, without synonymy) (MolluscaBase).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF9CCC39FEC61768FD53F9F9.taxon	description	nitidula, Eulima – Deshayes, 1850 - TraitElem: 47, pl. 75, figs 16 - 17, 20. — Type locality: none given. — Type age: Recent? Preoccupies Eulima nitidula A. Adams, 1854, which was replaced by Eulima adamsii G. B. Sowerby II, 1866. — Current status: Deshayes’ species remains a taxon inquirendum.	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF9CCC39FEC61768FD53F9F9.taxon	description	●	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF9DCC3AFC5314A2FA9EFB38.taxon	description	auricularis, Calyptraea – Deshayes, 1830 a-EncyMeth: 176 - 177; 1836 - HistNatAnim 2: 639; 1843 - HistNatAnim 3: 235. — Type locality: none given. — Type age: Recent. — Current status: taxon inquirendum. australis, Calyptraea – Deshayes in Guérin-Méneville, 1835: pl. 15, fig. 6, 6 a; Deshayes in Guérin-Méneville 1844: 30; Guérin-Méneville & Deshayes 1868: pl. 14, fig. 6 a, b. — Type locality: Australia. — Type age: Recent. Because Deshayes and Guérin-Méneville cooperated closely and because this species was credited just to Deshayes in the 1868 version, it is here credited to Deshayes, in Guérin-Méneville. — Current status: synonym of Calyptraea calyptraeformis Lamarck, 1822 (herein), a species figured by Wilson (1993: 163, pl. 22, fig. 12 a-b). calceolina, Crepidula – Deshayes, 1830 b-EncyMeth: 26. — Type localities: Mediterranean & India. — Type age: Recent & Vienna, Bordeaux & Touraine. — Type age: not stated. — Current status: synonym of the Mediterranean Crepidula unguiformis Lamarck, 1822 (Hoagland 1977: 388 - 389).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF9DCC3AFC5314A2FA9EFB38.taxon	description	cuvieri, Calyptraea – Deshayes, 1838 - RegAnim: pl. 48, fig. 4, 4 a. — Type locality: none given. — Type age: Recent. — Current status: Crucibulum but taxon inquirendum.	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF9DCC3AFC5314A2FA9EFB38.taxon	description	parisiensis, Crepidula – Deshayes, 1830 b-EncyMeth: 28; 1836 - HistNatAnim 2: 651 - 652; 1843 - HistNatAnim 3: 240. — Type locality: Thiverval-Grignon. — Type age: Eocene (Lutetian). Preoccupies Crepidula parisiensis Cossmann, 1883, which was renamed Crepidula bosqueti O. Boettgher, 1869. — Current status: synonym of Turbocalyptraea crepidularis (Lamarck, 1803) (Pacaud herein). patula, Crepidula – Deshayes, 1830 b-EncyMeth: 27; 1836 - HistNatAnim 2: 646 - 647; 1843 - HistNatAnim 3: 238. — Type locality: Tahiti, Mr. Lesson. — Type age: Recent. — Current status: synonym of the western South American Crepidula dilatata Lamarck, 1822 (Hoagland 1977: 372 - 373).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF9DCC3AFC5314A2FA9EFB38.taxon	description	radiola, Calyptraea – Deshayes, 1830 a-EncyMeth: 173 - 174; 1836 - HistNatAnim 2: 639; 1843 - HistNatAnim 3: 235. — Type locality: none given. — Type age: Recent. Based on images in Favanne de Montcervelle (1780: pl. 4, fig. B 2 – 2 views). — Current status: synonym of Crucibulum spinosum (G. B. Sowerby I, 1824) (R. Willmann & S. Willmann 2009: 52 - 53, pl. 4, fig. B 2 - B 3).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF9DCC3AFC5314A2FA9EFB38.taxon	description	peruviana, Crepidula – “ Deshayes, 1836 ”. Listed in Hoagland (1977: 372) as a synonym of Crepidula dilatata Lamarck, 1822, and as being on p. 49 of vol. 7 of the Deshayes edition of Lamarck. However, it is not there, that page being devoted to mytilid bivalves. She also noted that the types were in Geneva. Both probably errors for Crepidula peruviana Lamarck, 1822.	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF9ECC3BFC5410CBFAF4FE3F.taxon	description	obesa, Cypraea – Deshayes, 1865 - DescrCoqFoss: 561, 105, pl. 105, figs 11 - 12. — Type locality: Auvers-sur-Oise. — Type age: Eocene (Bartonian). — Type material: UCBL-EM 32824, holotype; MNHN. F. A 24290, plastotype. — Current status: Bernaya obesa (Deshayes, 1865) (Pacaud 2018 a: 57, figs 7 - 8).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF9ECC3BFC5410CBFAF4FE3F.taxon	description	vittata, Cypraea – Deshayes, 1823 - DictClass: pl. [83], fig. 1 a-b; 1828 - DictClass 14: 219; 1831 - DictClass 17: 120. — Type locality: none given. — Type age: Recent. — Current status: synonym of Cypraea ziczac Linnaeus, 1758 (Wilson 1993: 189, pl. 33, fig. 18). ●	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF9FCC24FC67170DFD94FD29.taxon	description	●	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF80CC24FECD110BFA1CFE0F.taxon	description	distans, Ficula – Deshayes, 1864 - DescrCoqFoss: 83, pl. 83, fig. 9; 1865 - DescrCoqFoss: 433. — Type locality: Chaumont-en-Vexin. — Type age: Eocene (Lutetian). — Type material: UCBL-EM 32751, holotype. — Current status: nomen dubium.	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF80CC24FECD110BFA1CFE0F.taxon	description	MNHN-IM- 2000 - 4159, holotype. — Current status: the western Atlantic Ficus pellucida Deshayes, 1856 (D. Lamy & Pointier 2018: 176; Verhaeghe & Poppe 2000: 20, pl. 5, figs 1 - 4, pls. 19 - 20).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF80CC24FC54158DFB8AFA1B.taxon	description	novemdactylis, Pterocera – Deshayes, 1843 - HistNatAnim 2: 678 - 679; 1843 - HistNatAnim 3: 740. — Type locality: none given. — Type age: Recent. — Current status: synonym of the Indo-Pacific Ophioglossolambis digitata (Perry, 1811) [Strombus] (Abbott 1961: 163 - 164, pl. 121, fig. 3, pl. 129, fig. 2, as Lambis). ● chemnitzii, Strombus – Deshayes, 1843 - HistNatAnim 2: 716. This was listed by Sherborn (1925: 1221) as a Deshayes name. However, it was first made available by L. Pfeiffer, 1840, as Deshayes indicated. Pfeiffer’s name is now considered to be a synonym of Euprotomus vomer (Röding, 1798) [Lambis]. multipes, Pterocera – Deshayes, 1843 - HistNatAnim 2: 677, ex Chemnitz ms. Sherborn (1928: 4190) listed this as a Deshayes species, but it was first made available by G. B. Sowerby II, 1842. It is a synonym of Ophioglossolambis violacea (Swainson, 1821) [Pterocera]. novaezelandiae, Strombus – Deshayes, 1843 - HistNatAnim 2: 715 - 716, ex Chemnitz ms. This was listed by Sherborn (1928: 4425) as being a Deshayes species, but it was first made available by Reeve (1842) and is now regarded as being a synonym of Euprotomus vomer (Röding, 1798) [Lambis].	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF80CC24FF32104EFE28FAF3.taxon	description	mulleri, Velutina – Deshayes, 1839 d: 361; 1841: 2, pl. 28. — Type locality: Kamchatka; Mr. Chiron. — Type age: Recent. — Current status: taxon inquirendum.	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF81CC25FEC91703FBF9F85A.taxon	description	cailliaudi, Rostellaria – Deshayes, 1865 - DescrCoqFoss: 91, pl. 91, fig. 3 [not in text]. — Type locality: none given. — Type age: Eocene (Bartonian). — Current status: synonym of Amplogladius athleta (d’Orbigny, 1850) (Pacaud 2007: 42).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF82CC26FEE912B2FB4AFE42.taxon	description	lamarkii, Ranella – Deshayes, 1853 - TraitElem: 67, pl. 112, figs 1 - 2. — Type locality: none given. — Type age: Recent. — Type material: NHMUK 1995224.1, neotype (Beu, 1998: 155), the specimen figured by Reeve (1844 b: pl. 5, fig. 23 a) from “ Island of Capul, Philippines ”. However, MNHN-IM- 2000 - 4108, syntype (ICZN Code Art. 75.8) would set aside the neotype designation. Name should be corrected to R. lamarckii (ICZN Code Art. 32.5). — Current status: Bursa lamarckii (Deshayes, 1853) (Wilson 1993: 227, pl. 43, fig. 7 a-b; Beu 1998: 155 - 157, figs 49 a-e, 58 f; Beu, inPoppe 2008 a: 620, pl. 255, figs 6 - 7; Poppe & Tagaro, in Poppe 2011: 550, pl. 1266, figs 5 - 6; Beu et al. 2012: 68, fig. 2 F; Okutani 2017: 867, pl. 154, fig. 2; Boutet et al. 2020: 306).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF82CC26FF3414A2FDC1FC60.taxon	description	intermedia, Ovula – Deshayes, 1835 - DescrCoqFoss: 718, 49, pl. 95, figs 34 - 36, non Ovulum intermedium G. B. Sowerby I, 1828. — Type localities: Thiverval-Grignon & Beynes. — Type age: Eocene (Lutetian). Renamed Ovula media Deshayes, 1844; see below.	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF82CC27FC08164DFE9CFA71.taxon	description	cicatricosa, Cassis – Deshayes, 1844 - HistNatAnim 2: 42, ex Gronovius [Meuschen] ms. — Type locality: none given. Although given a separate entry in Sherborn, this is a subsequent incorrect spelling of Buccinum cicatricosum Gmelin, 1791, ex Meuschen ms, which is now regarded as a synonym of the western Atlantic Semicassis granulata (Born, 1778) [Buccinum] (figured under both names in D. Lamy & Pointier 2018: 230 - 232, pl. 70, figs 9 - 10; Kreipl 1997: 53 - 54, pl. 19, fig. 62 - 62 e).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF83CC20FC6114A2FD78FDEE.taxon	description	multigraniferum, Triton – Deshayes, 1835 - DescrCoqFoss: 612 - 613, 42, pl. 80, figs 19 - 21; 1865 - DescrCoqFoss: 308. — Type localities: Thiverval-Grignon & Beynes. — Type age: Eocene (Lutetian). — Type material: UCBL-EM 32334, syntypes from Thiverval-Grignon. Sassia (Sassia) multigranifera (Deshayes, 1865) (Le Renard & Pacaud 1995: 113; Pacaud 2008: 56). — Type species (OD) of Parasassia Craig & Tracey, in Craig et al., 2020. — Current status: Parasassia multigranifera (Deshayes, 1835) (Craig et al. 2020: 29 - 30; fig. 11, pl. 11, figs 1 - 7).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF83CC20FC6114A2FD78FDEE.taxon	description	unifilosum, Triton – Deshayes, 1833 a: 34 - 35, nomen nudum.	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF84CC20FF0216D6FE16F85A.taxon	description	confusus, Trochus – Deshayes, 1832 - DescrCoqFoss: 243, 18, pl. 31, figs 3 - 4; 1864 - DescrCoqFoss: 963, as Xenophora. — Type localities: Parnes & Mouchy-le-Châtel. — Type age: Eocene (Lutetian). — Type material: UCBL-EM 30016, syntype. The specimen of Bartonian from Valmondois is Xenophora (Xenophora) cumulans (Brongniart, 1823). — Current status: Xenophora (Xenophora) confusa (Deshayes, 1832) (Ponder 1983: 68; Le Renard & Pacaud 1995: 96; Pacaud 2008: 57; Courville et al. 2012: 64, pl. 5, fig. 6; Lebrun et al. 2016: 40 - 41, fig. 16).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF84CC20FF0216D6FE16F85A.taxon	description	●	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF84CC21FC4716E3FE0FF85A.taxon	description	undulata, Marginella – Deshayes, 1844 - HistNatAnim 2: 451, ex Chemnitz ms. — Type locality: Guinea. — Type age: Recent. — Current status: synonym of Cryptospira strigata (Dillwyn, 1817) [Voluta] (Tomlin 1917: 303).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF85CC23FC6D14A2FE08FAF8.taxon	description	lebrosa, Mitra – Deshayes, 1835 - DescrCoqFoss: 673 [as M. “ lebrosa ”], 45 [as M. “ labrosa ”], pl. 88, figs 20 - 21; 1844 - HistNatAnim 2: 365 - 366; 1865 - DescrCoqFoss: “ 573 ” [583], as Mitra labrosa (ICZN Code Art. 24.2,4). — Type locality: Mouchy-le-Châtel. — Type age: Eocene (Lutetian). — Current status: Mitreola labrosa (Deshayes, 1835) (Le Renard & Pacaud 1995: 118; Pacaud 2008: 65).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF85CC23FC6D14A2FE08FAF8.taxon	description	● branderi, Voluta – Deshayes, 1835 - DescrCoqFoss: 701 - 702, 46, pl. 90, figs 15 - 16, ex Defrance ms, but this was described by Defrance (1829).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF87CC2CFF0811E1FB3EF85A.taxon	description	turriculatum, Triton – Deshayes, 1835 - DescrCoqFoss: 608, 42, pl. 80, figs 7 - 12 [figs 10 - 12 not cited in text; 1837]: 813 [correction made], non Deshayes, 1835 b (see above); 1865 - DescrCoqFoss: 312. — Type localities: Thiverval-Grignon, Mantes & Mouchy-le-Châtel. — Type age: Eocene (Lutetian). Plesiotriton deshayesianus Beu & P. A. Maxwell, 1987, replacement name. The latter is the type species (OD) of Colubratriton Pacaud, Ledon & Loubry, 2015. Exact dates of both Deshayes’ 1835 works unknown, so either could have been replaced. — Current status: Colubratriton deshayesianus (Beu & P. A. Maxwell, 1987) (Beu & Maxwell 1987: 25 - 26, pl. 23, figs a-e, h; Pacaud et al. 2015: 85 - 86, fig. 4, pl. 11, figs 1 - 5).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF87CC2CFF0811E1FB3EF85A.taxon	description	asperula, Cancellaria “ Deshayes ” – Deshayes in Guérin-Méneville, 1835: pl. 17, fig. 3; Cancellaria asperella “ Deshayes ”. Deshayes, in: 1844: 33, error C. asperella Lamarck, 1822, correctly credited in Guérin-Méneville & Deshayes (1868).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF89CC2FFF3114A2FD90FE0E.taxon	description	Baccinum – Deshayes, 1830 a-EncyMeth: 141. Incorrect subsequent spelling of Buccinum Linnaeus, 1758. Buccinulum – Deshayes, 1830 a-EncyMeth: 143. — Type species (SD Iredale, 1921): Murex lineatus Gmelin, 1791. Listed without description or species but placed on Official List by ICZN Opinion 479 (1957 b). Species list supplied by Swainson (1837). — Current status: valid type genus of the Buccinulidae Finlay, 1928, now regarded as a subfamily of Buccinidae. ambiguum, Buccinum – Deshayes, 1835 - DescrCoqFoss: 653, 45, pl. 87, figs 11 - 14, “ non Montagu ”, but actually non Solander, in Brander, 1766, nec Pulteney, 1799; 1865 - DescrCoqFoss: 503. — Type localities: Retheuil & Cuise-la-Motte. — Type age: Eocene (Ypresian). Renamed as Buccinum subambiguum d’Orbigny, 1850 b (d’Orbigny 1850 b: 320, no. 421). — Current status: Eocantharus subambiguus (d’Orbigny, 1850) (Vermeij 2001: 297; Pacaud 2007: 43).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF89CC2FFF3114A2FD90FE0E.taxon	description	fusiopsis, Buccinum – Deshayes, 1865 - DescrCoqFoss: 499 - 500. Replacement name for Buccinum fusiforme Deshayes, 1835, non Borson, 1820. — Current status: synonym of Pseudocominella armata (J. de C. Sowerby, 1850) (Nuttall & Cooper 1973: 193, pl. 3, figs 1 - 8). heberti, Purpura – Deshayes, 1865 - DescrCoqFoss: 521, 94, pl. 94, figs 21 - 22. — Type localities: Jeurre & Etréchy. — Type age: Oligocene (Rupelian). — Current status: Editharus heberti (Deshayes, 1865) (Lozouet & Maestrati 2012 a: 286, fig. 186: 25 - 28). herouvallesis, Fusus – Deshayes, 1865 - DescrCoqFoss: 279 - 280, 86, pl. 86, figs 29 - 31. — Type locality: Hérouval. — Type age: Eocene (Ypresian). — Type material: UCBL-EM 32778, syntypes. Janiopsis herouvallensis (Deshayes, 1865) (Le Renard & Pacaud 1995: 117; Snyder 2022: 99). Synonym of Jania heberti (Watelet, 1851) (Pacaud 2015 d: 27). — Current status: Janiopsis heberti (Watelet, 1851) (Pacaud 2016 a: 6).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF89CC2FFF3114A2FD90FE0E.taxon	description	●	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF8BCC29FC5D11E2FA1DFAFE.taxon	description	bifidus, Fusus – Deshayes, 1835 - DescrCoqFoss: 564; 1837 - DescrCoqFoss: 813, intended to be F. angulatus Lamarck, 1803. For some reason, Deshayes used the wrong name in a comparison, then corrected it, evidently not knowing that Lamarck’s species was a junior homonym, non Röding, 1798 (Snyder 2003: 51, 295). This essentially makes the Deshayes name a nomen nudum.	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF8BCC29FC5D11E2FA1DFAFE.taxon	description	terebralis, Fusus – Deshayes, 1837 - DescrCoqFoss: 813, 814, replacement name for Fusus laevigatus Lamarck, 1803, non (Gmelin, 1791) [Murex], but also non Fusus terebralis Lamarck, 1803. — Type locality: France. — Type age: Eocene. Listed by Snyder (2022: 198). Unnecessary replacement name, because Fusus laevigatus Lamarck, 1803, is a synonym of Fusus terebralis Lamarck, 1803.	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF8BCC29FC5D11E2FA1DFAFE.taxon	description	● heptagonus, Streptochetus – Pacaud (2008: 62) listed Streptochetus heptogonus (Deshayes, 1835), an error for Lamarck, 1803 [Fusus].	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF8DCC2AFC4111E6FE8AFD20.taxon	description	globatus, Fusus – Deshayes, 1864 - DescrCoqFoss: 83, pl. 83, figs 21 - 22; 1865 - DescrCoqFoss: 288. — Type localities: Auvers-sur-Oise, Valmondois, Mary-sur-Marne, Jaignes, Betz & Le Fayel. — Type age: Eocene (Bartonian). — Type material: UCBL-EM 32755, syntype from Le Fayel. — Current status: Sycostoma globatum (Deshayes, 1864) (Le Renard & Pacaud 1995: 116; Snyder 2022: 92).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF8ECC2BFF2D16A3FDA5F937.taxon	description	auversiense, Buccinum – Deshayes, 1865 - DescrCoqFoss: 498 - 499, 94, pl. 94, figs 1 - 3. — Type locality: Auvers-sur-Oise. — Type age: Eocene (Bartonian). — Current status: Colwellia auversiensis (Deshayes, 1865) (Le Renard & Pacaud 1995: 114; Lozouet & Galindo 2015: 46).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF8ECC2BFF2D16A3FDA5F937.taxon	description	gradatum, Buccinum – Deshayes, 1844 - HistNatAnim 2: 186 - 187. — Type locality: “ New Zealand ” [Argentina]. — Type age: Recent. — Type material: MNHN-IM- 2000 - 6973, syntype. — Current status: synonym of Buccinanopsis cochlidium (Dillwyn, 1817) [Buccinum] (Simone 1996; Pastorino & Simone 2021: 1213 - 1222, figs 1 - 8). granatina, Purpura – Deshayes, 1832 b: 425 - 426, 440, 523, pl. 3, figs 8 - 9. — Type locality: Ceylon [Sri Lanka]; Bélanger. — Type age: Recent. — Current status: Taxon inquirendum (R. Houart pers. comm., March 2020).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF8ECC2BFF2D16A3FDA5F937.taxon	description	limatum, Buccinum – Deshayes, 1844 - HistNatAnim 2: 200 - 201, ex Chemnitz ms. Cernohorsky (1984: 50) and Cecalupo (1988: 36, pl. 2, fig. 6, as Hinia) credited this species to Deshayes, but this Chemnitz ms name was first made available by Philippi (1836) and is now considered to be a synonym of Tritia lima (Dillwyn, 1817) [Buccinum] (Coan & Kabat 2017: 182).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF8FCC16FC6D162CFA09FC56.taxon	description	Purpurea – Deshayes, 1844 d: 2, pl. 85. Incorrect subsequent spelling of Purpura Bruguière, 1789.	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF8FCC16FC6D162CFA09FC56.taxon	description	atromarginata, Purpura – Deshayes, 1844 - HistNatAnim 10: 91 - 92. Unjustified emendation of Purpura marginatra Blainville, 1832. The Indo-Pacific Neothais marginatra (Blainville, 1832).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF8FCC16FC6D162CFA09FC56.taxon	description	coronatus, Typhus – see previous entry.	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF8FCC16FC6D162CFA09FC56.taxon	description	lamarckii, Leptocochus – see next entry. lamarkii, Leptoconchus – Deshayes, 1863: 127 - 128, pl. 12, figs 1 - 3, as L. lamarckii. — Type locality: La Réunion. — Type age: Recent. — Type material: MNHN-IM- 2000 - 982, 5 syntypes. Name should be corrected to L. lamarckii (ICZN Code Art. 32.5). — Type species (OD) of Magilopsis G. B. Sowerby III, 1919, now regarded as a synonym of Leptoconchus Rüppell, 1835. Magilus lamarckii (Deshayes, 1863) (Tsuchiya, in Okutani 2017: 972, pl. 266, fig. 10). — Current status: Leptoconchus lamarckii Deshayes, 1863 (Massin 1982: 16 - 17; Severns 2011: 278, pl. 122, fig. 4; Boutet et al. 2020: 388). laceratum, Murex – Deshayes, 1856 d: 79 - 81, pl. 3, figs 3 - 4; 1857: 419. — Type locality: Algeria; Deshayes coll. — Type age: Recent. — Current status: synonym of Babelomurex cariniferus (G. B. Sowerby II, 1834) [Murex] (MolluscaBase). leucostoma, Purpura – Deshayes, 1863: 116 - 117, pl. 12, fig. 23. — Type locality: La Réunion. — Type age: Recent. — Type material: MNHN- IM- 2000 - 967, 12 syntypes. — Currentstatus: synonymof Usillaavenacea (Lesson, 1842) [Purpura] (R. Houart pers. comm., March 27, 2020).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF8FCC16FC6D162CFA09FC56.taxon	description	● foliaceus, Murex – Deshayes, 1865 - DescrCoqFoss: 324 - 325, 87, pl. 87, figs 27 - 30. Made available byMelleville (1843: 115 - 116 [70, 87], pl. 9, figs 4 - 6). — Type locality: Mons-en-Laonnois. — Type age: Eocene (Ypresian). — Current status: Paziella (Flexopteron) foliacea fraterculus (Deshayes, 1865) (Merle et al. 2011: 167, pl. 136, figs 9 - 10). globulosus, Magilus – G. B. Sowerby II, 1872 a: pl. 3, fig. 10, ex Deshayes ms. — Type locality: none given. — Type age: Recent. — Current status: Leptoconchus globulosus G. B. Sowerby II, 1872 (Massin 1982: 16); taxon inquirendum (MolluscaBase). monoplex, Purpura (Monoplex) – Sandberger, 1861: 225 - 226, 1860: pl. 18, fig. 10 - 10 a, b, ex Deshayes ms. — Type localities: Jeurre & Welschberg (Germany). — Type age: Oligocene (Rupelian). — Current status: Cymia monoplex (Sandberger, 1861) (Cossmann & Lambert 1884: 174 - 175, pl. 5, fig. 18, as “ Deshayes ” and as “ var. disjuncta ”; Lozouet 2012).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFFB2CC17FC4D1040FDC8FEC2.taxon	description	extranea, Mitra – Deshayes, 1865 - DescrCoqFoss: “ 580 ” [590], 103, pl. 103, figs 11 - 13. — Type locality: Cuise-la-Motte. — Type age: Eocene (Ypresian). Vexillum (Uromitra) extraneum (Deshayes, 1865) (Le Renard & Pacaud 1995: 118).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFFB3CC17FC1914A2FA3AFBA7.taxon	description	seminuda, Pleurotoma – Deshayes, 1865 - DescrCoqFoss: 401, 98, pl. 98, figs 18 - 19, non Anton, 1838. Made available by Melleville (1843: 110 [64, 86], pl. 8, fig. 12 - 14). — Type locality: none given. — Type age: Eocene (Ypresian). — Current status: synonym of Olinderia angusta (Deshayes, 1834) (Pacaud herein).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFFB3CC17FEC510F4FCA4F85A.taxon	description	lutescente, Mitra – Deshayes, 1844 - HistNatAnim 2: 323. Misspelling of Mitra lutescens Lamarck, 1811, a synonym of Mitra cornicula Linnaeus, 1758 (Cernohorsky 1976: 369 - 371). ● pica, Mitra – Deshayes, 1844 - HistNatAnim 2: 331, ex Chemnitz ms. No locality indicated. — Type age: Recent. Name made available by Dillwyn, 1817, also as ex Chemnitz ms, an Indo-Pacific species (Cernohorsky 1976: 304 - 305, 479 - 480, pl. 258, figs 4 - 5, pl. 430, figs 2 - 4, pl. 430 A).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFFB4CC10FF3B14A2FA8EFE95.taxon	description	●	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFFB4CC10FC3D150DFB83F97B.taxon	description	fissuratum, Buccinum – Deshayes, 1835 - DescrCoqFoss: 656, 45, pl. 87, figs 21 - 22; 1844 - HistNatAnim 2: 226. 1858: 554, as Pseudoliva; 1865 - DescrCoqFoss: 508 - 509, as Pseudoliva. — Type localities: Noailles & Abbecourt. — Type age: Paleocene (Thanetian). Listed by Voskuil (2018: 25). This species has been mistakenly listed as the type species of Sulcobuccinum, which is instead Buccinum tiara (see below). — Current status: Pseudoliva fissurata (Deshayes, 1835) (Le Renard & Pacaud 1995: 114; Pacaud 1998: 14, 17; Pacaud 2007: 48). obtusum, Buccinum – Deshayes, 1835 - DescrCoqFoss: 657, 45, pl. 88, figs 1 - 2, non Gmelin, 1791; 1844 - HistNatAnim 2: 226; 1865 - DescrCoqFoss: 508, as Pseudoliva. — Type locality: Chaumont-en-Vexin. — Type age: Eocene (Lutetian). Listed byVoskuil (2018: 25). Pseudoliva obtusa (Deshayes, 1835) (Le Renard & Pacaud 1995: 114; Pacaud 2008: 66; Pacaud 2009 b: 6). — Current status: synonym of Pseudoliva aizyensis Watelet, 1875 (Pacaud herein).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFFB4CC12FC79136CFCACF90A.taxon	description	acutangulus, Conus – Deshayes, 1833 e: 127. Misattributed to Deshayes, this was originally proposed by Lamarck, 1810, a living Indo-Pacific species, in 1833 misused for a Miocene fossil from Austria. pseudomarmoreus, Conus – Crosse, 1875 a: 223 - 225, pl. 9, fig. 4, ex Deshayes ms. — Type locality: none given. — Type age: Recent. — Type material: MNHN-IM- 2000 - 2522, holotype. Synonym of Conus (Conus) marmoreus Linnaeus, 1758 (Filmer 2001: 227), the type species of the genus Conus Linnaeus, 1758 (Puillandre et al. 2015: 6). symmetricus, Conus – Sandberger, 1859: pl. 15, fig. 3, 3 a; 1862: 248, ex Deshayes ms; Deshayes, 1865 - DescrCoqFoss: 426, 100, pl. 100, figs 27 - 28, non G. B. Sowerby I, 1850. — Type locality: Weinheim, Gienberg & Kernberg, Germany; Jeurre, France. — Type age: Oligocene (Rupelian). Hemiconus symmetricus (Sandberger, 1859) (Lozouet & Maestrati 2012 a: 290, 293, fig. 190: 1 - 3, as “ Deshayes ”). — Current status: Hemiconus acionna Pacaud, n. name (replacement name herein): from one of its type regions (Essonne, France) with Germany, where the type material was collected. Name from the Essone River, which originates from the name of the Gallic goddess of rivers, Acionna; name given in apposition.	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFFB6CC12FF3D1287FC4FF936.taxon	description	NOTE Syphopsis Le Renard, 2005, is a replacement name for Siphopsis Le Renard, 1995, non Rafinesque, 1819 [Cnidaria]; the invalid name was used in some of the references below prior to 2005. breviusculus, Fusus – Deshayes, 1864 - DescrCoqFoss: 83, pl. 83, figs 26 - 28; 1865 - DescrCoqFoss: 274 - 275. — Type locality: Thiverval-Grignon. — Type age: Eocene (Lutetian). — Current status: Syphopsis breviuscula (Deshayes, 1864) (Le Renard & Pacaud 1995: 116; Pacaud 2008: 69; Snyder 2022: 40).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFFB7CC1CFC5210B9FEE8FE47.taxon	description	textiliosa, Pleurotoma – Deshayes, 1834 - DescrCoqFoss: 454 - 455, 33, pl. 62, figs 5 - 6; 1865 - DescrCoqFoss: 361 - 362. — Type locality: Monneville. — Type age: Eocene (Bartonian). — Current status: Turricula (Crenaturricula) textiliosa (Deshayes, 1834) (Le Renard & Pacaud 1995: 124.	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFFB8CC1CFF2A10A5FAB7F85A.taxon	description	evulsa, Pleurotoma – Deshayes, 1865 - DescrCoqFoss: 404 - 405. — Type localities: Cuise-la-Motte, Retheuil, Laversine & Laon. — Type age: Eocene (Ypresian). — Current status: Cryptoconus evulsus (Deshayes, 1865) (Le Renard & Pacaud 1995: 122). inaequistriata, Pleurotoma – Deshayes, 1865 - DescrCoqFoss: 411, pl. 95, figs 17 - 19. — Type locality: Thiverval-Grignon. — Type age: Eocene (Lutetian). — Current status: Cryptoconus inaequistriatus (Deshayes, 1865) (Le Renard & Pacaud 1995: 122; Pacaud 2008: 67, as “ 1834 ”).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFFB9CC1DFF3214A2FC72F987.taxon	description	dameriacencis, Pleurotoma – Deshayes, 1865 - DescrCoqFoss: 394 - 395, 99, pl. 99, figs 7 - 9. — Type localities: Damery & Saint-Félix. — Type age: Eocene (Lutetian). Preoccupies Pleurotoma dameriacensis Boury, 1899, which was renamed Eopleurotoma morelleti Tucker & Le Renard, 1993 (Tucker & Le Renard 1993: 2), an unnecessary replacement name because it is a synonym of Eopleurotoma multinoda (Lamarck, 1804). Raphitoma (Raphitoma) defrancei [Tucker & Le Renard, 1993] dameriacensis (Deshayes, 1865) (Le Renard & Pacaud 1995: 126), an error in rank. — Current status: Amblyacrum dameriacense (Deshayes, 1865) (Pacaud 2021: 43).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFFB9CC1DFF3214A2FC72F987.taxon	description	minuatus, Fusus – Deshayes, 1864 - DescrCoqFoss: 84, pl. 84, figs 31 - 33; 1865 - DescrCoqFoss: 281 - 282. — Type locality: Les Groux. — Type age: Eocene (Lutetian). — Type material: UCBL-EM 32766, syntype. Wrongly regarded as a junior homonym of Fusus minutus Lamarck, 1803, and renamed Siphonalia lacrymosa Cossmann, 1889 (Cossmann 1889: 152) (Snyder 2022: 131). — Current status: Oenopota (Buchozia) minuata (Deshayes, 1864) (Le Renard & Pacaud 1995: 116; Pacaud 2008: 68).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFFBACC1FFF32120EFD4BFA74.taxon	description	attenuata, Pleurotoma – Deshayes, 1834 - DescrCoqFoss: 483 - 484, 36, pl. 68, figs 6 - 8, non J. Sowerby, 1816; 1865 - DescrCoqFoss: 386. — Type locality: Retheuil. — Type age: Eocene (Ypresian). Pleurotoma subattenuata d’Orbigny, 1850 b (d’Orbigny 1850 b: 316, no. 340), replacement name. Raphitoma (Raphitoma) subattenuata (d’Orbigny, 1850) (Pacaud 2007: 48). — Current status: Amblyacrum subattenuatum (d’Orbigny, 1850) (Pacaud herein).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFFBACC1FFF32120EFD4BFA74.taxon	description	perplexa, Pleurotoma – see entry above.	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFFBBCC05FEC51266FB18FE95.taxon	description	undatella, Terebra – Deshayes, 1859: 300. — Type locality: none given. — Type age: Recent. — Type material: NHMUK 1979934, holotype (listed by A. Salvador & Pickering 2017: 139). Synonym of the Indo-Pacific Terebra succincta (Gmelin, 1791) [Buccinum] (Bratcher & Cernohorsky 1987: 100 - 102, who misinterpreted Deshayes species as a replacement name; Terryn 2007: 30, pls. 5, 50, without synonymy), now Punctoterebra succincta (Gmelin, 1791) (Fedosov et al. 2020: 375, fig. 8 D, without synonymy). — Current status: synonym of Punctoterebra flavescens (Deshayes, 1859) (Terryn & Fraussen 2022: 136, figs 1 Q, S, 2 H-P).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFFBBCC05FEC51266FB18FE95.taxon	description	alboflava, Hastula – Listed as a Deshayes species by Terryn, in Poppe (2008 b: 800, pl. 695, figs 10 - 12), its correct author is Bratcher, 1988, not Deshayes (Poppe 2018: 204).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFFA1CC07FC89150CFA05FC0F.taxon	description	cuisensis, Pleurotoma – Deshayes, 1865 - DescrCoqFoss: 375 - 376, 98, pl. 98, figs 4 - 5. — Type locality: Cuise-la-Motte. — Type age: Eocene (Ypresian). Synonym of Pleurotoma (Eopleurotoma) tenuistriata Deshayes, 1834 (Cossmann 1889: 269, pl. 9, fig. 51). — Current status: Gemmula cuisensis (Deshayes, 1865) (Pacaud herein).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFFA1CC07FC89150CFA05FC0F.taxon	description	mitreola, Pleurotoma – Deshayes, 1834 - DescrCoqFoss: 485, 36, pl. 68, figs 16 - 18 [in text, plate written 48, but should have been 68]; 1837 - DescrCoqFoss: 812 [correction made]. — Type locality: Beynes. — Type age: Eocene (Lutetian). — Current status: synonym of Crassispira (Tripia) inflexa (Lamarck, 1804) (Pacaud herein).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFFA1CC07FC89150CFA05FC0F.taxon	description	simplex, Pleurotoma – Deshayes, 1834 - DescrCoqFoss: 490 - 491, 36, pl. 68, figs 10 - 12; 1865 - DescrCoqFoss: 391. — Type localities: Thiverval-Grignon & La Ferme de l’Orme. — Type age: Eocene (Lutetian). Preoccupies P. simplex Philippi, 1844, and P. simplex Middendorff, 1849. Philippi’s Oligocene species was renamed Pleurotoma planispira Semper, 1866 (Coan & Kabat 2017: 193). Middendorff’s species is regarded as a synonym of Obesotoma laevigata (Dall, 1871) [Bela]. — Current status: synonym of Elaeocyma plicata (Lamarck, 1803) (Pacaud herein).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFFA1CC07FC89150CFA05FC0F.taxon	description	transitoria, Pleurotoma – Deshayes, 1865 - DescrCoqFoss: 412. — Type localities: Parnes, Thiverval-Grignon, Chaumont-en-Vexin, Gomerfontaine, Saint-Félix & Valmondois. — Type age: Eocene (Lutetian-Bartonian). Replacement name for Pleurotoma coronata (Lamarck, 1803) [Fusus], non Pleurotoma coronata Münster, in Goldfuss, 1841, but now unnecessary. In accordance with ICZN Code Art. 59.2, the two species are no longer considered congeneric and the predominant uses of the names Pseudotoma coronata (Lamarck, 1803) and Gemmula coronata (Münster, in Goldfuss, 1844) is here maintained (Pacaud herein). — Current status: synonym of Pleurotoma coronata (Lamarck, 1803). uniserialis, Pleurotoma – Deshayes, 1834 - DescrCoqFoss: 458 - 459, 33, pl. 63, figs 1 - 3 [figs on p. 34 labeled with this species name are instead P. decussata (Lamarck, 1804)]; 1837 - DescrCoqFoss: 814 [correction made]; 1865 - DescrCoqFoss: 381 - 382 – Type localities: Mouchy-le-Châtel, Parnes & Chaumont-en-Vexin. — Type age: Eocene (Lutetian). — Current status: synonym of Gemmula crenulata (Lamarck, 1804) [Pleurotoma] (Tréguier & Pacaud 2018: 212).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFFA1CC07FC89150CFA05FC0F.taxon	description	inaequistriata, Pleurotoma – Boury, 1899: 106, pl. 1, fig. 23, ex Deshayes ms, non Deshayes, 1865. — Current status: synonym of Pleurotoma dentata Lamarck, 1804. now Turricula (Crenaturricula) dentata (Lamarck, 1804) (Le Renard & Pacaud 1995: 124). multinodis, Pleurotoma – Boury, 1899: 62, pl. 1, fig. 25, ex Deshayes ms. Unjustified emendation of Eopleurotoma multinoda (Lamarck, 1804). — Current status: synonym of Pleurotoma bicatena Lamarck, 1804, now Eopleurotoma bicatena (Lamarck, 1804) (Le Renard & Pacaud 1995: 124).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFFA1CC07FC89150CFA05FC0F.taxon	description	rudiuscula, Pleurotoma – Cossmann: 1889: 267 - 268, pl. 9, figs 43 - 44, ex Deshayes ms. — Current status: synonym of Eopleurotoma decussata (Lamarck, 1804) [Pleurotoma], now Eopleurotoma decussata (Lamarck, 1804) (Le Renard & Pacaud 1995: 124).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFFA3CC07FC7A1075FB99FA3C.taxon	description	corallina, Orthostoma – Deshayes, 1850 - TraitElem: 48, pl. 76, fig. 16. — Type locality: France. — Type age: Jurassic. — Type material: UCBL-EM 32123, syntype. — Type species of Orthostomia Deshayes, 1850 (see above). — Current status: Euactaeonina corallina (Deshayes, 1850).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFFA3CC00FC7711B1FE52FE16.taxon	description	simplex, Nerinea – Deshayes, 1835 b: 186, pl. 26, figs 8 - 9. — Type locality: Peloponnese Peninsula, Greece. — Type age: Cretaceous? – Current status: taxon inquirendum.	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFFA4CC00FF3F1692FDBCF9B5.taxon	description	michaudi, Valvata – Deshayes, 1862 - DescrCoqFoss: 525, 36, pl. 36, figs 6 - 8. — Type localities: Caumont & Mareuil-en-Dôle. — Type age: Eocene (Bartonian). — Type material: UCBL-EM 32543, syntype from Mareuil-en-Dôle. — Current status: Valvata (Cincinna) michaudi Deshayes, 1862 (Le Renard & Pacaud 1995: 98).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFFA4CC01FCB114A2FA92FD7D.taxon	description	Thorinia – Deshayes, 1863 - DescrCoqFoss: 666 - 668. Incorrect subsequent spelling of Torinia J. E. Gray, 1840. bifidum, Solarium (Thorinia) – Deshayes, 1863 - DescrCoqFoss: 669 - 670, 40, pl. 40, figs 35 - 37 [in text as figs 36 - 38]. — Type locality: Acy-en-Multien. — Type age: Eocene (Bartonian). — Type material: UCBL-EM 32562, holotype. 1865 - DescrCoqFoss: 666 [correction noted]. Listed by Bieler & Petit (2005: 25). — Current status: Architectonica (Nipteraxis) bifida (Deshayes, 1863) (Le Renard & Pacaud 1995: 101). Nipteraxis bifidus (Deshayes, 1861) (Harzhauser & Landau 2023: 32). bimarginatum, Solarium (Thorinia) – Deshayes, 1863 - DescrCoqFoss: 670 - 671, 41, pl. 41, figs 4 - 7. — Type locality: Aizy-Jouy. — Type age: Eocene (Ypresian). — Type material: UCBL-EM 32564, syntype. Listed by Bieler & Petit (2005: 25). — Current status: Synonym of Nipteraxis intermedia (Deshayes, 1863) (Pacaud herein). bistriatum, Solarium – Deshayes, 1832 - DescrCoqFoss: 215, 15, pl. 25, figs 19 - 20; 1843 - HistNatAnim 2: 111 - 112; 1843 - HistNatAnim 3: 541; 1863 - DescrCoqFoss: 665. — Type localities: Retheuil, Cuise-la-Motte & Laon. — Type age: Eocene (Ypresian). Listed by Bieler & Petit (2005: 25). Architectonica (Stellaxis) bistriata (Deshayes, 1832) (Le Renard & Pacaud 1995: 100). — Current status: Stellaxis bistriatus (Deshayes, 1832) (Jeffery & Tracey 1997: 84). calvimontanum, Solarium (Thorinia) – Deshayes, 1863 - DescrCoqFoss: 666, 41, pl. 41, figs 1 - 3. — Type locality: Chaumont-en-Vexin. — Type age: Eocene (Lutetian). — Type material: UCBL-EM 32563, holotype. Listed by Bieler & Petit (2005: 27). — Current status: synonym of Climacopoma grandis (Nyst, 1845) (Pacaud herein). cornu-ammonis, Solarium – Deshayes, 1832 - DescrCoqFoss: 219. In the synonymy of Solarium plicatum Lamarck, 1804. Error pro Solarium ammonites Lamarck, 1804, in confusion with a vernacular name, as noted by Bieler & Petit (2005: 30). crenulare, Solarium (Thorinia) – Deshayes, 1863 - DescrCoqFoss: 668, 41, pl. 41, figs 8 - 12. — Type locality: Mary-sur-Marne. — Type age: Eocene (Bartonian). — Type material: UCBL-EM 32565, syntype. Listed by Bieler & Petit (2005: 31). — Current status: Architectonica (Granosolarium) crenularis (Deshayes, 1863) (Le Renard & Pacaud 1995: 100).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFFA4CC01FCB114A2FA92FD7D.taxon	description	disculus, Solarium (Disculus) – Deshayes, 1863 - DescrCoqFoss: 674, 42, pl. 42, figs 1 - 4, non Solarium disculum Morris & Lysett, 1851.	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFFA4CC01FCB114A2FA92FD7D.taxon	description	insolitum, Solarium (Disculus) – Deshayes, 1863 - DescrCoqFoss: 674 - 675, 42, pl. 42, figs 5 - 8. — Type localities: Auvers-sur-Oise & Valmondois. — Type age: Eocene (Bartonian). — Type material: UCBL-EM 32570, syntypes. Listed byBieler & Petit (2005: 44). — Current status: Disculus insolitus (Deshayes, 1863) (Pacaud herein).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFFA6CC03FF371751FEEBFAC6.taxon	description	electa, Tornatella – Deshayes, 1862 - DescrCoqFoss: 595 - 596, 37, pl. 37, figs 17 - 19. — Type localities: Cuise-la-Motte, Pierrefonds, Retheuil, Laversine, Coeuvres-et-Valsery, Aizy-Jouy, Hérouval & Laon. — Type age: Eocene (Ypresian). — Current status: synonym of Acteon subinflatus d’Orbigny, 1850 (Gougerot & Le Renard 1984: 83, 85); Acteon (Acteon) subinflatus d’Orbigny, 1850 (Le Renard & Pacaud 1995: 127).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFFA6CC03FF371751FEEBFAC6.taxon	description	lamarckii, Volvaria – Deshayes, 1865 - DescrCoqFoss: 543, 104, pl. 104, figs 1 - 3. — Type locality: Laversine. — Type age: Eocene (Ypresian). — Type species (M) of Volvariella P. Fischer, 1883. — Current status: Volvaria (Volvariella) lamarckii Deshayes, 1865 (Pacaud & Le Renard 1995: 172).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFFA6CC03FF371751FEEBFAC6.taxon	description	procera, Tornatella – Deshayes, 1862 - DescrCoqFoss: 596, 37, pl. 37, figs 20 - 22. — Type localities: Cuise-la-Motte, Pierrefonds, Laversine, Mercin-et-Vaux, Laon & Hérouval. — Type age: Eocene (Ypresian). — Type material: UCBL-EM 32554, syntypes. — Current status: Acteon (Acteon) procerus (Deshayes, 1862) (Le Renard & Pacaud 1995: 127).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFFA6CC03FF371751FEEBFAC6.taxon	description	acuminata, Auricula – Leymerie, 1841: 320, nomen nudum; 1842: 12, 30, pl. 16, fig. 1 a-b, es Deshayes ms. — Type locality: Courtaoult. — Type age: Cretaceous (Albian). — Current status: synonym of Tornatellaea lacryma Michelin, 1834 (Kollmann 2005: 47, pl. 6, fig. 7).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFFA7CC03FC6E128BFB98F85A.taxon	description	tuncata, Doris – Deshayes, in Frédol, 1865: pl. 11 [op. p. 272], fig. 1. — Type locality: none given. — Type age: Recent. — Current status: nomen dubium.	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFFA7CC03FF3412B2FBB3F909.taxon	description	This order, originally “ Les Pleurobrances ” [1832 - EncyMeth: table between p. 552 - 553], was first Latinized by Herrmannsen (1847). It originally contained dispirate contents, but now covers only the Pleurobranchoidea J. E. Gray, 1827 (Bouchet et al. 2017: 310, 353).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFFA8CC0CFF341251FB1DFE95.taxon	description	alderiana, Eolis – Deshayes, in Frédol, 1865: pl. 11 [op. p. 272], fig. 7. — Type locality: none given. — Type age: Recent. — Current status: synonym of Spurilla neapolitana (Della Chiaje, 1841) [Eolis] (Carmona et al. 2014: 135 - 140, figs 1 A-F, 2 A-B, 3 A), the type species (M) of Spurilla Bergh, 1864. ●	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFFA8CC0CFC08102BFB83FA18.taxon	description	minuta, Bulla – Deshayes, 1824 - DescrCoqFoss: 43, 3, pl. 5, figs 16 - 17, 21. 1862 - DescrCoqFoss: 633, as Bulla (Cylichna). — Type locality: Versailles. — Type age: Oligocene (Rupelian). — Current status: Retusa minuta (Deshayes, 1824) (Lozouet & Maestrati 2012 a: 294 - 295, fig. 191: 27 - 28).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFFA8CC0CFC42150DFA1CFCB3.taxon	description	laudunensis, Umbrella – Deshayes, 1863 - DescrCoqFoss: 657, 4, pl. 4, figs 12 - 13. Made available by Melleville (1843: 90 [44, 85], pl. 6, figs 3 - 4). — Type locality: Laon. — Type age: Eocene (Ypresian). — Current status: Umbraculum laudunense (Melleville, 1843).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFFAACC0FFC7D1235FD57FDC3.taxon	description	Laplysia is an incorrect original spelling of Aplysia (ICZN Opinion 200, 1954 a). albopunctata, Aphysia [sic, for Aplysia] – Deshayes, 1853 - TraitElem: 59, pl. 92, figs 1 - 2. — Type locality: none given. — Type age: Recent. — Current status: synonym of Aplysia punctata Cuvier, 1803 [Laplysia] (Eales 1960: 291 - 293; Golestani et al. 2019: [39]). cailleti, Aplysia – Deshayes, 1857 f: 140 - 141. — Type locality: Guadeloupe; Schramm. — Type age: Recent. — Current status: probable synonym of Aplysia fasciata Poiret, 1789 [Laplysia] (Eales 1960: 297 - 298; Strenth & Blankenship 1977: 98). maillardi, Dolabrifera – Deshayes, 1863: 53 - 54, pl. 7, figs 20 - 22. — Type locality: La Réunion. — Type age: Recent. — Type material: MNHN-IM- 28790, 3 syntypes (Valdés & Héros 1998: 712). — Current status: synonym of Dolabrifera dolabrifera (Rang, 1828) [Aplysia] (Engel & Hummelinck 1936).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFFABCC0FFF0516C2FA03FE38.taxon	description	Sherborn (1922 - 1933) credited several species of Hyalaea to “ d’Orbigny in Deshayes ”, 1836 - HistNatAnim 2. However, Deshayes was able to cite these species because plates 5 - 7 of d’Orbigny’s Voyage Amerique Méridionale appeared on August 31, 1835, with on-plate captions. The following is a list of their correct authorships and dates, together with their current allocations in MolluscaBase. d’Orbigny’s text appeared a year later than these plates, together with one unrelated “ ex Deshayes ms ” species. affinis, Hyalaea – d’Orbigny, 1835: pl. 5, figs 6 - 10. Synonym of Cavolinia tridentata (Forsskål, 1775) [Anomia]. flava, Hyalaea – d’Orbigny, 1835: pl. 5, figs 21 - 35. Cavolinia gibbosa flava (d’Orbigny, 1835).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFFABCC0FFF0516C2FA03FE38.taxon	description	laevigata, Hyalaea – d’Orbigny, 1835: pl. 7, figs 15 - 19. Synonym of Diacavolinia limbata (d’Orbigny, 1835). limbata, Hyalaea – d’Orbigny, 1835: pl. 6, figs 21 - 25. Diacavolinia limbata (d’Orbigny, 1835). longirostra, Hyalaea – d’Orbigny, 1835: pl. 6, figs 6 - 10. Species purposed earlier by Blainville, 1821, now Diacavolinia longirostris (Blainville, 1821) [Hyalaea]. cumingii, Hyalaea – G. B. Sowerby II, 1877 b: pl. 1, fig. 5, ex Deshayes ms. — Type locality: Australia. — Type age: Recent. — Current status: synonym of Cavolinia tridentata (Forsskål, 1775) [Anomia].	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFFABCC0FFCB717EFFA87FBDD.taxon	description	Pneumodermo – Deshayes, 1838 - RegAnim: pl. 17, figs 1 - 2. Incorrect subsequent spelling of Pneumodermon Cuvier, 1816.	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFFABCC08FC7910C9FCA4FEE8.taxon	description	90 [43 - 44, 82], pl. 1, figs 6 - 7. — Type locality: Laon. — Type age: Eocene (Ypresian). — Current status: Hemiplicatula solida (Melleville, 1843), a representative of the subfamily Gougerotiinae Le Renard, 1980 (Le Renard et al. 1996: 231; Nevesskaja et al. 2013: 268, fig. 96 - 1, who mistakenly assigned this taxon to the Bivalvia).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFFACCC08FF38135BFBD7FC79.taxon	description	crassicostata, Siphonaria – Deshayes, 1861 - DescrCoqFoss: 8, pl. 8, figs 8 - 11; 1863 - DescrCoqFoss: 693. — Typelocality: Auvers-sur-Oise. — Type age: Eocene (Bartonian). — Type material: MNHN. F. A 91648, 2 syntypes. — Current status: Siphonaria crassicostata Deshayes, 1861 (Wenz 1923: 1723; Le Renard & Pacaud 1995: 129). incerta, Siphonaria – Deshayes, 1863: 81 - 82, pl. 7, figs 16 - 17. — Type locality: La Réunion. — Type age: Recent. — Current status: Siphonaria incerta Deshayes, 1863 (White & Dayrat 2012: 62). parcicostata, Siphonaria – Deshayes, 1863: 82, pl. 7, figs 18 - 19. — Type locality: La Réunion. — Type age: Recent. — Current status: Siphonaria parcicostata Deshayes, 1863 (White & Dayrat 2012: 62). scutellum, Siphonaria – Deshayes, 1839 d: 360; 1841: 2, pl. 35. — Type locality: Chatham Island, New Zealand. Jeannelle collection. — Type age: Recent. — Type material: MNHN-IM- 2000 - 5117, 5 syntypes. Synonym of Benhamina obliquata (G. B. Sowerby I, 1825) [Siphonaria], the type species (OD) of Benhamina Finlay, 1927. Listed by White & Dayrat (2012: 62). — Current status: Benhamina obliquata (G. B. Sowerby I, 1825), which was discussed by Powell (1979: 293, pl. 54, figs 12 - 13). spectabilis, Siphonaria – Deshayes, 1863 - DescrCoqFoss: 692, 8, pl. 8, figs 1 - 3. — Type localities: Acy-en-Multien, Bouconvillers, La Ferté-sous-Jouarre, Le Tombray. — Type age: Eocene (Bartonian). — Type material: UCBL-EM 32393, syntype from Acy-en-Multien. — Current status: Siphonaria spectabilis Deshayes, 1863 (Le Renard & Pacaud 1995: 129).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFFACCC0BFC581075FA04F903.taxon	discussion	REMARK Concerning the genus Lacunoptyxis Cossmann, 1888, a pyramidellid, see discussion under “ praelonga, Lacuna ” in the Iravadiidae.	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFFACCC0BFC581075FA04F903.taxon	description	biplicatum, Odostomia – Deshayes, 1861 - DescrCoqFoss: 26, pl. 26, figs 19 - 21; 1862 - DescrCoqFoss: 555, non J. Fleming, 1813. — Type locality: Pierrefonds. — Type age: Eocene (Ypresian). Le Renard (1994: 39) proposed Stolidoma (Stolidomopsis) fehsei as a replacement name. — Current status: Tiberia (Cossmannica) fehsei (Le Renard, 1994).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFFACCC0BFC581075FA04F903.taxon	description	media, Odostomia – Deshayes, 1861 - DescrCoqFoss: 19, pl. 19, figs 17 - 19; 1862 - DescrCoqFoss: 559, as O. “ medianum ”. — Type localities: Caumont, Ver-sur-Launette & La Chapelle-en-Serval. — Type age: Eocene (Bartonian). — Current status: Odostomia (Megastomia) media Deshayes, 1861 (Pacaud 2008: 73).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFFACCC0BFC581075FA04F903.taxon	description	minor, Odostomia – Deshayes, 1861 - DescrCoqFoss: 19, pl. 19, figs 25 - 26; 1862 - DescrCoqFoss: 556. — Type locality: Caumont. — Type age: Eocene (Bartonian). — Current status: Odostomia (Megastomia) minor Deshayes, 1861 (Le Renard & Pacaud 1995: 91).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFFACCC0BFC581075FA04F903.taxon	description	notata, Turbonilla – Deshayes, 1862 - DescrCoqFoss: 568, 27, pl. 27, figs 7 - 8. — Type locality: Mouchy-le-Châtel. — Type age: Eocene (Lutetian). — Current status: Levipyrgulina notata (Deshayes, 1862) (Le Renard & Pacaud 1995: 92, as “ 1861 ”).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFFACCC0BFC581075FA04F903.taxon	description	primaevum, Odostomia – Deshayes, 1861 - DescrCoqFoss: 19, pl. 19, figs 31 - 32; 1862 - DescrCoqFoss: 556 - 557. — Type locality: Jonchery-sur-Vesle. — Type age: Paleocene (Thanetian). Odostomia (? Odostomia) primaeva Deshayes, 1861 (Le Renard & Pacaud 1995: 91 – Current status: Odostomia primaeva Deshayes, 1861 (Leroy et al. 2014: 269, pl. 29, fig. 5).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFFACCC0BFC581075FA04F903.taxon	description	pyramidellatum, Odostomia – Deshayes, 1861 - DescrCoqFoss: 19, pl. 19, figs 20 - 22; 1862 - DescrCoqFoss: 560. — Type localities: Parnes & Damery. — Type age: Eocene (Lutetian). — Current status: Odostomia (Megastomia) pyramidellata Deshayes, 1861 (Le Renard & Pacaud 1995: 91; Pacaud 2008: 73). pyramis, Odostomia – Deshayes, 1861 - DescrCoqFoss: 18, pl. 18, figs 7 - 8; 1862 - DescrCoqFoss: 560, non A. Adams, 1860. — Type locality: Parnes. — Type age: Eocene (Lutetian). — Current status: Odostomia (Megastomia) wetherelli Le Renard, 1994 (Le Renard 1994: 38), replacement name (Le Renard & Pacaud 1995: 91; Pacaud 2008: 73).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFFACCC0BFC581075FA04F903.taxon	description	scalaroides, Turbonilla – Deshayes, 1861 - DescrCoqFoss: 21, pl. 21, figs 9 - 10; 1862 - DescrCoqFoss: 568. Ormoy-la-Rivière. — Type age: Oligocene (Rupelian). — Current status: Turbonilla scalaroides (Lozouet et al. 2012: 432 - 433, fig. 290: 13 - 14; Lozouet & Maestrati 2012 b: 33).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFFACCC0BFC581075FA04F903.taxon	description	tenuiplica, Melania – Deshayes, 1825 - DescrCoqFoss: 111 - 112, 7 [as M. “ plicatula ”], pl. 13, figs 20 - 21; 1837 - DescrCoqFoss: 812, 813, species name intended to be spelled tenuiplicata; 1832 - EncyMeth: 430; 1862 - DescrCoqFoss: 569, 27, pl. 27, figs 19 - 20, as Turbonilla tenuiplicata. — Type locality: Pierrelaye. — Type age: Oligocene (Rupelian). Dispite his desire, Deshayes’ original spelling has to take precedence. — Current status: Colpostomia plicatula (Deshayes, 1825) (Lozouet & Maestrati 2012 a: 294 - 295, fig. 191: 17 - 18, as “ 1864 ”).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFFACCC0BFC581075FA04F903.taxon	description	turrella, Turbonilla – Deshayes, 1861 - DescrCoqFoss: 20, pl. 20, figs 20 - 21; 1862 - DescrCoqFoss: 566 - 567. Made available by Melleville (1843: 98 - 99 [52 - 53, 84], pl. 4, figs 26 - 27), as Pyramidella turella. — Type localities: Laon & Chavaille. — Type age: Eocene (Ypresian). — Current status: Turbonilla turella Melleville, 1843.	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFFAFCCF5FC571286FE20FAA2.taxon	description	briarensis, Limnaea – Deshayes, 1863 - DescrCoqFoss: 713, 45, as Limnaea briariensis, pl. 45, figs 11 - 14. — Type locality: Romainville. — Type age: Oligocene (Rupelian). — Current status: Radix briarensis (Deshayes, 1863) (Wenz 1923: 1238). brongniarti, Limnaea – Deshayes, 1863 - DescrCoqFoss: 721, 42, pl. 42, figs 29 - 30. — Type localities: Montmorency, Saint-Prix, Evêquemont, Pontournois Oligocene (Chattian). — Type material: MNHN. F. B 68569, syntype (Brongniart coll.) from Montmorency; MNHN. F. J 03342, syntype (Brongniart coll.) from Saint-Prix; MNHN. F. J 03343, syntype (Hébert coll.) from Evêquemont; UCBL-EM 32572, syntype (Deshayes coll.) from Montmorency. — Current status: Galba brongniarti (Deshayes, 1863) (Wenz 1923: 1357). condita, Limnaea – Deshayes, 1863 - DescrCoqFoss: 710 - 711, 43, pl. 43, figs 10 - 12. — Type locality: Cernay-la-Ville. — Type age: Eocene (Rupelian). — Type material: UCBL-EM 32573, syntype. Synonym of Radix subovata (Zieten, 1830) (Wenz 1923: 1294), now placed in Stagnicola (Kadolsky, 2020). — Current status: synonym of Stagnicola subovata Zieten, 1832 [Limneus] (MolluscaBase). crassula, Limnaea – Deshayes, 1863 - DescrCoqFoss: 711, 44, pl. 44, figs 27 - 33. — Type locality: Chéry-Chartreuve. — Type age: Eocene (Bartonian). — Type material: UCBL-EM 32581 & 32582, syntypes. — Current status: Lymnaea crassula Deshayes, 1863 (Wenz 1923: 1212; Le Renard & Pacaud 1995: 129). davidii, Limnea – Deshayes, 1870 b: 26 - 27. — Type locality: Moupin, Tibet. — Type age: Recent. — Current status: synonym of Orientogalba ollula (Gould, 1859) [Limnaea] (MolluscaBase).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFFAFCCF5FC571286FE20FAA2.taxon	description	heberti, Limnaea – Deshayes, 1863 - DescrCoqFoss: 729, 45, pl. 45, figs 15 - 16. — Type locality: Romainville. — Type age: Oligocene (Rupelian). — Current status: Radix heberti (Deshayes, 1863) (Wenz 1923: 1250). inconspicua, Limnaea – Deshayes, 1863 - DescrCoqFoss: 720, 45, pl. 45, figs 5 - 6. — Type localities: Saint-Ouen, Batignolles, La Villette, Place de l’Europe (Paris) & Bois de Varinfroy. — Type age: Eocene (Bartonian). — Type material: MNHN. F. J 04181, syntype. — Current status: Galba inconspicua (Deshayes, 1863) (Wenz 1923: 1370; Le Renard & Pacaud 1995: 129).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFFAFCCF5FC571286FE20FAA2.taxon	description	melaniana, Limnaea – Deshayes, 1863 - DescrCoqFoss: 727 - 428, 43, pl. 43, figs 18 - 20 [in text as figs 20 - 22]. — Type locality: Étampes. — Type age: Oligocene (Rupelian). 1865 - DescrCoqFoss: 666 [correction noted]. MNHN. F. J 04177, holotype. — Current status: Galba melaniana (Deshayes, 1863) (Wenz 1923: 1390).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFFAFCCF5FC571286FE20FAA2.taxon	description	obtusissima, Limnaea – Deshayes, 1838 a: 63 - 64, [ii], pl. 5, figs 10 - 11. — Type locality: Crimean Peninsula. — Type age: Miocene or Pliocene. — Current status: Radix obtusissima (Deshayes, 1838) (Wenz 1923: 1256). opima, Limnaea – Deshayes, 1863 - DescrCoqFoss: 709, 43, pl. 43, figs 16 - 17. — Type locality: Fontainebleau. — Type age: Oligocene (Rupelian). — Current status: synonym of Stagnicola subovatus Zieten, 1832 [Limneus] (Wenz 1923: 1294). parvula, Limnaea – Deshayes, 1863 - DescrCoqFoss: 727, 43, pl. 43, figs 25 - 27 [in text as figs 28 - 30], non Limnaeus parvulus Braun, in Walchner, 1851; 1865 - DescrCoqFoss: 666 [correction noted]. — Type locality: Segrais, near Pithiviers. — Type age: Miocene (Aquitanian). Preoccupies Limnaea parvula Hazay, 1880, a synonym of Stagnicola palustris (O. F. Müller, 1774) [Buccinum]. — Current status: synonym of Galba (Galba) subpalustris [Thomae, 1845] minor (Thomae, 1845) [Limnaeus] (Wenz 1923: 1403). peregrina, Limnaea – Deshayes, 1838 a: 63, [ii], pl. 5, figs 8 - 9. — Type locality: Crimean Peninsula. — Type age: Miocene. Preoccupies L. peregrina Clessin, 1882, a synonym of L. columella Say, 1817. — Current status: Lymnaea peregrina Deshayes, 1838 (Wenz 1923: 1223). stampinensis, Limnaea – Deshayes, 1863 - DescrCoqFoss: 710, pl. 43, figs 21 – 22. — Type locality: Côte-Saint Martin (Etampes). — Type age: Oligocene (Rupelian). — Current status: synonym of Stagnicola subovatus Zieten, 1832 [Limneus] (Wenz 1923: 1294). substriata, Lymnaea – Deshayes, 1824 - DescrCoqFoss: 6, pl. 11, figs 5 - 6; 1825 - DescrCoqFoss: 94; 1832 - EncyMeth: 358, as Limnea [sic]; 1838 - HistNatAnim 2: 421; 1843 - HistNatAnim 3: 419. — Type locality: La Chapelle-en-Serval. — Type age: Eocene (Bartonian). Radix substriata (Deshayes, 1824) (Wenz 1923: 1311). — Current status: synonym of Lymnaea antiqua Brongniart, 1810 [Limneus palustris] (Pacaud 2007: 50). succinea, Limnea [sic] – Deshayes, 1832 b: 418 - 419, 440, 523, pl. 2, figs 13 - 14; 1838 - HistNatAnim 2: 417; 1843 - HistNatAnim 3: 418. — Type locality: Malabar, India, freshwater; Bélanger. — Type age: Recent. — Current status: synonym of Racesina luteola (Lamarck, 1822) [Lymnaea], the type species (OD) of Racesina Vinarski & Bolotov, 2018 (MolluscaBase). tombecki, Limnaea – Deshayes, 1863 - DescrCoqFoss: 711 - 712, 42, as L. tumbecki, pl. 42, figs 26 - 28. — Type localities: Montmorency & Evêquemont. — Type age: Oligocene (Rupelian). — Type material: MNHN. F. J 03339, syntype. — Current status: Lymnaea tombecki Deshayes, 1863 (Wenz 1923: 1227). velutina, Limnaea – Deshayes, 1838 a: 64, [ii], pl. 5, figs 12 - 14. — Type locality: Crimean Peninsula. — Type age: Miocene. — Type species (SD Wenz, 1923) of Velutinopsis Sandberger, 1875. — Current status: Velutinopsis velutina (Deshayes, 1838) (Botka et al. 2019: 226 - 228, fig. 31). vesiculosa, Limnaea – Deshayes, 1863 - DescrCoqFoss: 706 - 707, 42, pl. 42, fig. 31. — Type locality: Montmorency. — Type age: Oligocene (Rupelian). — Current status: Radix vesiculosa (Deshayes, 1863) (Wenz 1923: 1313).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF51CCF5FEDC130AFBF9FD3F.taxon	description	primigenia, Physa – Deshayes, 1863 - DescrCoqFoss: 733, 44, pl. 44, figs 11 - 12. — Type localities: Châlons-sur-Vesle & Jonchery-sur-Vesle. — Type age: Paleocene (Thanetian). — Type material: UCBL-EM 32575, syntype from Châlons-sur-Vesle. — Current status: Aplexa primigenia (Deshayes, 1863) (Wenz 1923: 1715; Le Renard & Pacaud 1995: 129).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF51CCF6FC5216ADFA03FA28.taxon	description	duveyrieri, Planorbis – Deshayes, 1864: 44 - 45, l. 3, fig. 1 [Deshayes, in Duveyrier]; Bourguignat 1864: 25 - 26, 30, pl. 27, fig. 6 [see under: Deshayes, in Duveyrier]. — Type locality: White soil near Ghoûrd- Ma’ammer, on the road from El-Quâd to Ghadâmè, Libya. — Type age: Recent. — Current status: synonym of Biomphalaria pfeifferi (Krauss, 1848) [Planorbis] (Chevallier 1969: 278 - 280), an extinct species closely related to Biomphalaria glabrata (Say, 1818), an intermediate snail host for the trematode parasite Schistosoma mansoni.	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF51CCF6FC5216ADFA03FA28.taxon	description	inversus, Planorbis – Deshayes, 1824 - DescrCoqFoss: 5, pl. 9, figs 16 - 18; 1825 - DescrCoqFoss: 88; 1863 - DescrCoqFoss: 755. — Type locality: La Villette (Paris). — Type age: Eocene (Bartonian). — Type material: UCBL-EM 32381, syntype from Septeuil. — Current status: synonym of Hippeutis (Hippeutis) inflatus (Deshayes, 1824) (Wenz 1923: 1637).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF51CCF6FC5216ADFA03FA28.taxon	description	pygmaeus, Planorbis – Deshayes, 1863 - DescrCoqFoss: 750, 46, pl. 46, figs 36 - 39. — Type locality: Mouchy-le-Châtel. — Type age: Eocene (Lutetian). — Type material: UCBL-EM 32591, syntype. — Current status: Menetus pygmaeus (Deshayes, 1863) (Le Renard & Pacaud 195: 129; Pacaud 2008: 76).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF52CCF0FC4B11ABFA03FDE8.taxon	description	Stolidoma – Deshayes, 1863 - DescrCoqFoss: 765 - 768. Replacement name for Macrodonta Deshayes, 1861, “ non Macrodon ‘ Buchanan’ [Buckman], 1844, non Macrodontes Swainson, 1840 ”, neither of which would actually preoccupy Deshayes’ Macrodonta. However, it is preoccupied by Macrodonta Costa, 1846, a bivalve of uncertain position. Stoliodoma Wenz, 1920, is an incorrect subsequent spelling. — Current status: Stolidoma is a valid genus.	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF52CCF0FC4B11ABFA03FDE8.taxon	description	buccina, Auricula – Deshayes, 1833 b: 232, nomen nudum. — Type locality: Peloponnese Peninsula, Greece. — Type age: Subapennine Formation, Pliocene.	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF52CCF0FC4B11ABFA03FDE8.taxon	description	cornea, Auricula – Deshayes, 1830 a-EncyMeth: 90 - 91; 1838 - HistNatAnim 2: 339; 1843 - HistNatAnim 3: 390. — Type locality: New York. — Type age: Recent. — Current status: synonym of the western Atlantic Melampus bidentatus Say, 1822 (Abbott 1974: 331 - 332, fig. 4087).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF52CCF0FC4B11ABFA03FDE8.taxon	description	depressa, Auricula – Deshayes, 1863 - DescrCoqFoss: 776 - 777, 48, pl. 48, figs 19 - 21. — Type locality: Hérouval. — Type age: Eocene (Ypresian). — Type material: UCBL-EM 32602, syntype. — Current status: Pythiopsis (Pythiopsis) depressa (Deshayes, 1863) (Wenz 1923: 1143; Le Renard & Pacaud 1995: 130).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF54CCF0FC50102EFA1DF85A.taxon	description	chertieri, Helix – Deshayes, 1863 - DescrCoqFoss: 800, 49, pl. 49, figs 24 - 27. — Type localities: Côte Saint-Parres (Saint-Nicolas-la- Chapelle) & Morancez. — Type age: Eocene (Lutetian). — Type material: MNHN. F. J 04132, MNHN. F. R 63047, syntypes. — Current status: Grandipatula chertieri (Deshayes, 1863) (Wenz 1923: 236; Le Renard & Pacaud 1995: 131).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF55CCF1FF321622FAABFE19.taxon	description	electa, Achatina – Deshayes, 1863 - DescrCoqFoss: 838, 53, pl. 53, figs 10 - 12. — Type locality: Fontainebleau. — Type age: Oligocene (Chattian). Synonym of – Current status: Palaeoglandina gracilis (Zieten, 1832) [Limnaea] (Wenz 1923: 840). fasciata, Agathina – Deshayes, 1831 - DictClass 17: 121, pl. [85]. — Type locality: none given. — Type age: Recent. — Current status: synonym of Lissachatina fulica (Bowdich, 1822) [Achatina] (Bequaert 1950: 61, as a subgenus of Achatina). maculata, Agathina – Deshayes, 1830 a-EncyMeth: 12, non Swainson, 1821. — Type locality: none given. — Type age: Recent. — Current status: synonym of Lissachatina fulica (Bowdich, 1822) [Achatina] (Bequaert 1950: 61, as a subgenus of Achatina). marmini, Achatina – Deshayes, 1830 a-EncyMeth: 11. — Type locality: none given; Marmin. — Type age: Recent. — Current status: nomen dubium. minor, Achatina panthera – Deshayes, 1851 - HistNatTerrFluv: 19, pl. 132, figs 1 - 2. — Type locality: none given. — Type age: Recent. — Current status: synonym of Lissachatina panthera [Ferussac, 1821; Helix] lamarckiana L. Pfeiffer, 1846 (Bequaer, 1950: 109, as a subgenus of Achatina). moreletiana, Achatina – Deshayes, 1851 - HistNatTerrFluv 2 (2): 146 - 147, 19, pl. 137, figs 7 - 8. — Type locality: Gabon. — Type age: Recent. — Type material: MNHN-IM- 2000 - 4873, 3 syntypes; NHMUK 1873.2.4.1935 - 1937, 3 syntypes. — Current status: Pseudotrochus moreletianus (Deshayes, 1851) (Pilsbry 1904: 228 - 229, pl. 9, figs 3 - 4, 7). scalaris, Bulimus (Stenogyra) – Deshayes, 1876: 96 – 97, 100, pl. 1, figs 27 - 29. — Type locality: Peking, China. — Type age: Recent. — Current status: synonym of Paropeas achatinaceum (L. Pfeiffer, 1846) [Bulimus] (Naggs 1994: 177). subemarginata, Achatina – Deshayes, 1851 - HistNatTerrFluv 2 (2): 187 - 188, 19, pl. 134, figs 31 - 32. — Type locality: none given. — Type age: Recent. — Current status: nomen dubium. turritellata, Achatina – Deshayes, 1830 a-EncyMeth: 11 - 12; 1851 - HistNatTerrFluv 2 (2): 167 - 168, 19, pl. 134, figs 17 - 18. — Type locality: none given. — Type age: Recent. — Current status: nomen dubium. unicolor, Achatina variegata – Deshayes, 1851 - HistNatTerrFluv: 18, pl. 124, figs 3 - 4, non C. B. Adams, 1849. — Type locality: none given. — Type age: Recent. — Current status: synonym of Lissachatina achatina [Bowdich, 1822; Achatina] monochromatica Pilsbry, 1904 (Bequaert 1950: 33, as a subgenus of Achatina). ● fulva, Achatina – Deshayes, 1838 - HistNatAnim: 309 - 310; 1851 - HistNatTerrFluv: 18, pl. 124, figs 1 - 2, non Beck, 1837. However, according to Deshayes, this was Bulimus fulvus Bruguière, 1791, Deshayes merely crediting himself with the generic change. Bequaert (1950: 61) listed this as of Deshayes and as synonym of Lissachatina fulica (Bowdich, 1822) [Achatina], and listed Bruguière’s taxon (p. 33) as a possible synonym of a form of Achatina achatina (Linnaeus, 1758) [Bulla].	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF55CCF1FC5C16AAFAB2FB43.taxon	description	intersecta, Pupa – Deshayes, 1863: 91 - 92, pl. 11, fig. 1. — Type locality: La Réunion. — Type age: Recent. — Type material: MNHN-IM- 2000 - 30947, syntype. — Current status: Gibbus (Gibbulina) intersecta (Deshayes, 1863) (Nevill 1870: 410, possible variety of G. bourguignati Deshayes, 1863).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF56CCF2FEC0174EFE66FB23.taxon	description	quadrata, Helix – Deshayes, 1839 - HistNatTerrFluv 1: 20; pl. 69 C: figs 11 - 12; 1851 - HistNatTerrFluv: 13, ex Férussac ms. — Type locality: Islas Juan Fernandez, Chile; Cuming. — Type age: Recent. — Current status: Stephanoda quadrata (Deshayes, 1839) (Schileyko 2001: 919, fig. 1202, as “ 1851 ”).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF56CCF2FF3210ABFE55F85A.taxon	description	ferrantii, Helix – Deshayes, 1824 - DescrCoqFoss: 56, 4, pl. 7, fig. 10; 1838 - HistNatAnim 2: 138 - 139; 1843 - HistNatAnim 3: 318, the latter two as Helix “ ferranti ”; 1863 - DescrCoqFoss: 826, as Helix “ ferrandi ”. — Type locality: Oigny. — Type age: Oligocene (Chattian). 1832 - EncyMeth: 223, as Helix “ ferranti ”. — Current status: Discus ferrantii (Deshayes, 1824) (Wenz 1923: 331, as Gonyodiscus “ ferranti ”).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF56CCF2FC6A14A2FA2AFDF6.taxon	description	pardalina, Helix – Deshayes, 1850 - HistNatTerrFluv 1: 88 - 89; 1851 - HistNatTerrFluv: 15, pl. 83, figs 3 - 4. — Type locality: “ Ochetaroa ” [?]; Cuming. — Type age: Recent. — Current status: probable synonym of Australdonta radiella (L. Pfeiffer, 1846) from Opara, French Polynesia (Solem 1976: 306 - 307, fig. 132 a-b).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF56CCF3FC75120DFD45FE6B.taxon	description	boissyi, Succinea – Deshayes, 1863 - DescrCoqFoss: 796, 54, pl. 54, figs 1 - 3. — Type locality: Rilly-la-Montagne. — Type age: Paleocene (Thanetian). — Type material: UCBL-EM 32616, holotype. — Current status: Succinea (Brachyspira) boissyi Deshayes, 1863 (Le Renard & Pacaud 1995: 132). brevispira, Succinea – Deshayes, 1863 - DescrCoqFoss: 794 - 795, 52, pl. 52, figs 33 - 36. — Type locality: Cuis. — Type age: Eocene (Ypresian). — Current status: Succinea (Brachyspira) brevispira Deshayes, 1863 (Le Renard & Pacaud 1995: 132). levantina, Succinea – Deshayes, 1835 b: 170, pl. 19, figs 25 - 27; 1838 - HistNatAnim 2: 317 - 318; 1843 - HistNatAnim 3: 382. — Type localities: Peloponnese Peninsula, Greece; also Sicily & Constantino - ple. — Type age: Recent. — Current status: synonym of Oxyloma elegans (Risso, 1826) [Succinea] (MolluscaBase). sparnacensis, Succinea – Deshayes, 1863 - DescrCoqFoss: 795, 52, pl. 52, figs 30 - 32. — Type locality: Mont-Bernon (Épernay). — Type age: Eocene (Ypresian). — Current status: Succinea (Succinea) sparnacensis Deshayes, 1863 (Le Renard & Pacaud 1995: 132).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF57CCF3FED51768FA03F961.taxon	description	elongata, Megaspira – Deshayes, 1863 - DescrCoqFoss: 864, 55, pl. 55, figs 13 - 15. Made available by Melleville (1843: 92 - 93 [46 - 47, 84], pl. 4, fig. 23 - 25), as Pupa elongata. — Type locality: Châlons-sur-Vesle. — Type age: Paleocene (Thanetian). Primary junior homonym of Pupa elongata Bouillet, 1836. Kadolsky (2021) proposed to maintain the junior primary homonym under ICZN Code Article 23.9.3.	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF57CCF3FED51768FA03F961.taxon	discussion	REMARK Two species from Madagascar have been incorrectly attributed to Férussac in 1839 or 1840 in the plates of the continuation of his work that were actually issued by Deshayes. However, these plates were uncaptioned, with the accompanying text and plate explanations only appearing in 1850 and 1851. The first species had already been made available as Helix goudotiana L. Pfeiffer, 1845 (Pfeiffer 1845: 155), also discussed in L. Pfeiffer (1847: 18), evidently copied from labels with Férussac material or ms notes. It is now considered a synonym of Embertoniphanta oviformis (Grateloup, 1840) [Helix] (Emberton & Rakotondrazafy 2020: 202 - 206, figs 8 - 21). A second species, Helix amphibulima, also from Madagascar, had appeared as a nomen nudum in Beck (1838: 46, ex Valenciennes ms) and in then L. Pfeiffer (1847: 18), as a synonym of H. oviformis Grateloup, 1840). However, used as an available name before 1961 by Crosse & P. Fischer, in Grandidier (1889) (ICZN Code Art. 11.6.1). This is thus Embertoniphanta amphibulima (L. Pfeiffer, 1847); it is the type species of the genus Embertoniphanta Groh & Poppe, 2002.	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF58CCFCFEC6170FFD18F89F.taxon	description	● grandis, Bulimus – Rowson (2007: 439) synonymized this name, credited to “ Deshayes, in Férussac ”, with Edentulina ovoidea (Bruguière, 1789) [Bulimus]. However, this was merely an asserted misuse of Bulimus grandis (L. Pfeiffer, 1846) [Pupa] by Deshayes (1851 - HistNatTerrFluv 2: 101 - 102, 20, pl. 144, figs 1 - 2).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF58CCFCFECC130AFAFBFE88.taxon	description	Recent. — Current status: synonym of Thaumastus taunaisii (Férussac, 1822) [Helix]. turella, Megaspira – Deshayes, 1858: 553, nomen nudum.	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF58CCFCFC9D150CFC56FCFE.taxon	description	pentagruelinus, Bulimus – Deshayes, 1838 - HistNatAnim 2: 255. Incorrect subsequent spelling of Helix (Cochlodina) pantagruelina Moricand, 1833.	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF59CCFDFF03172FFDEEF85A.taxon	description	baudoni, Bulimus – Deshayes, 1870 b: 24; 1876: 99, pl. 1, figs 18 - 19. — Type locality: Moupin, Tibet. — Type age: Recent. — Current status: Pseudonapaeus baudoni (Deshayes, 1870) (Wu 2018: 75, pl. 1 fig. 5). davidi, Bulimus – Deshayes, 1870 b: 23 - 24; 1876: 100, pl. 1, figs 24 - 26. — Type locality: Moupin, Tibet. — Type age: Recent. — Current status: Mirus davidi (Deshayes, 1870) (Wu 2018: 207 - 209, fig. 62, pl. 6 fig. 2). derivatus, Bulimus – Deshayes, 1876: 95 - 96, 100, pl. 1, figs 24 - 26. — Type locality: Peking, China. — Type age: Recent. — Current status: Mirus derivatus (Deshayes, 1876) (Wu 2018: 209 - 210, as “ 1874 ”).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF59CCFDFF03172FFDEEF85A.taxon	description	macroceramiformis, Bulimus – Deshayes, 1870 b: 25; 1876: 99, pl. 1, figs 16 - 17. — Type locality: Moupin, Tibet. — Type age: Recent. — Current status: Pseudonapaeus macroceramiformis (Deshayes, 1870) (Wu 2918: 87, pl. 1 fig. 14). moupiniensis, Bulimus – Deshayes, 1870 b: 24; 1876: 100, pl. 1, figs 20 - 21. — Type locality: Moupin, Tibet. — Type age: Recent. — Current status: Mirus moupiniensis (Deshayes, 1870) (Wu 2018: 217 - 218, pl. 6, fig. 10, as M. “ mupingianus ”).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF5ACCFEFF321088FBDAF971.taxon	description	serrata, Clausilia – Deshayes, 1870 b: 25 - 26; 1876: 100, pl. 1, figs 32 - 34. — Type locality: Moupin, Tibet. — Type age: Recent. — Type material: MNHN-IM- 2000 - 2676, 6 syntypes. — Type species (OD) of Serriphaedusa H. Nordsieck, 2001. — Current status: Serriphaedusa serrata (Deshayes, 1870) (MolluscaBase). splendidus, Bulimus – Deshayes, 1863 - DescrCoqFoss: 830, 55, pl. 55, figs 1 - 2. — Type locality: Mont-Bernon (Épernay). — Type age: Eocene (Ypresian). — Current status: synonym of Rillya tenuistriata (Wetherell, 1846) [Bulimus] (Wenz 1923: 755).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF5ACCFEFF3314A2FE20FB04.taxon	description	bifida, Pupa – Deshayes, 1863 - DescrCoqFoss: 860, 56, pl. 56, figs 19 - 21. — Type locality: Côte Saint-Martin (Étampes). — Type age: Oligocene (Rupelian). — Type material: MNHN. F. J 03360, holotype. — Current status: Vertigo bifida (Deshayes, 1863) (Wenz 1923: 982; Lozouet et al. 2012: 418 - 419, fig. 283: 5 - 6). fischeri, Pupa – Deshayes, 1863 - DescrCoqFoss: 858 - 859, 56, pl. 56, figs 34 - 36. — Type locality: Côte Saint-Martin (Etampes). — Type age: Oligocene (Rupelian). — Current status: synonym of Vertigo (Vertigo) callosa globulus (Deshayes, 1863) (Pacaud herein). globulus, Pupa – Deshayes, 1863 - DescrCoqFoss: 860, 56, pl. 56, figs 16 - 18. — Type locality: Côte Saint-Martin (Étampes). — Type age: Oligocene (Rupelian). — Type material: MNHN. F. J 03364, holotype. — Current status: Vertigo callosa [Reuss, in Reuss & Meyer, 1849] globulus (Deshayes, 1863) (Wenz 1923: 991). munieri, Pupa – Deshayes, 1863 - DescrCoqFoss: 858, 56, pl. 56, figs 25 - 27. — Type locality: Côte Saint-Martin (Étampes). — Type age: Oligocene (Rupelian). — Type material: MNHN. F. J 03362, syntype. — Current status: synonym of Vertigo (Vertigo) callosa globulus (Deshayes, 1863) (Pacaud herein). turcica, Pupa – Deshayes, 1863 - DescrCoqFoss: 861, 57, pl. 57, figs 1 - 3. — Type locality: Côte Saint-Martin (Étampes). — Type age: Oligocene (Rupelian). — Type material: MNHN. F. J 03361, holotype (Lozouet et al. 2012: 418 - 419, fig. 283: 9 - 10). — Current status: synonym of Glandicula tiarula (A. Braun, in Walchner, 1851) (Wenz 1923: 1011).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF5BCCFFFF2111A3FCA4F96A.taxon	description	frappieri, Helix – Deshayes, 1863: 86 - 87, pl. 10, figs 15 - 17. — Type locality: La Réunion. — Type age: Recent. — Current status: synonym of Louisia barclayi (Benson, 1850) [Helix] (MolluscaBase).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF5BCCFFFF3B14A2FCA4FD4A.taxon	description	pellati, Helix – Deshayes, 1863 - DescrCoqFoss: 818 - 819, 50, pl. 50, figs 32 - 35. — Type locality: Mont-Bernon (Epernay). — Type age: Eocene (Ypresian). — Type material: UCBL-EM 32614, syntype. — Current status: Zonitoides? pellati (Deshayes, 1863) (Wenz 1923: 297; Le Renard & Pacaud 1995: 131).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF5BCCFFFF1D1363FA1CFDC1.taxon	description	imperfecta, Helix – Deshayes, 1863: 89 - 90, pl. 10, figs 24, 26. — Type locality: La Réunion. — Type age: Recent. — Current status: Caldwellia imperfecta (Deshayes, 1863) (Schileyko 2004: 1244, fig. 1635). semifusca, Helix – Deshayes, 1832 b: 414 - 415, 439, 522, pl. 1, figs 8 - 10. — Type locality: Pondichery, India; Bélanger. — Type age: Recent. — Current status: Dancea semifusca (Deshayes, 1832) (MolluscaBase). vinsoni, Helix – Deshayes, 1863: 88 - 89, pl. 10, figs 20 - 23. — Type locality: La Réunion. — Type age: Recent. — Current status: synonym of Erepta setiliris (Benson, 1859) [Helix] (MolluscaBase).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF5BCCF8FCB816CEFD5EFCAB.taxon	description	baudini, Helix – Deshayes, 1832 - EncyMeth: 256. — Type locality: New Guinea. — Type age: Recent. — Current status: Naninia, but nomen dubium (Benthem Jutting 1964: 51). belangeri, Helix – Deshayes, 1832 b: 413 - 414, 439, 522, pl. 1, figs 1 - 3; 1832 - EncyMeth: 233 - 234; 1838 - HistNatAnim 2: 101 - 102; 1843 - HistNatAnim 3: 304; 1850 - HistNatTerrFluv 1: 100; 1851 - HistNatTerrFluv: 14, pl. 69 - I, fig. 4. — Type locality: Pondichery, India; Bélanger. — Type age: Recent. — Type material: MNHN-IM- 2000 - 25160, lectotype; MNHN-IM- 2000 - 23017, 2 paraletotypes; MNHN-IM- 2000 - 23018, paralectotype. — Current status: Ariophanta belangeri (Deshayes, 1832) (Raheem et al. 2014: 88 - 89, figs 53 F, 54 A-C).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF5BCCF8FCB816CEFD5EFCAB.taxon	description	expolita, Helix – Deshayes, 1850 - HistNatTerrFluv 1: 190 - 191; 1851 - HistNatTerrFluv: 15, pl. 87, fig. 1. — Type locality: none given [Cambodia]. — Type age: Recent. — Current status: synonym of Sarika resplendens (Philippi, 1847) [Helix] (Tryon 1886: 91). maillardi, Helix – Deshayes, 1863: 86, pl. 10, figs 12 - 14. — Type locality: La Réunion. — Type age: Recent. — Current status: Dupontia maillardi (Deshayes, 1863) (MolluscaBase). moupiniana, Helix – Deshayes, 1870 b: 23; 1874 b: 13, as Helix maupiniana, pl. 2, figs 16 - 18. Moupin, Tibet. — Type age: Recent. — Type material: MNHN-IM- 2000 - 34200, 4 syntypes. — Current status: Macrochlamys moupiniana (Deshayes, 1863) (MolluscaBase). problematicus, Limax – Deshayes, 1851 - HistNatTerrFluv 2 (1): 963, ex Férussac ms; 1851 - HistNatTerrFluv: 3, pl. 8 F, figs 13 - 17. Uncaptioned pl. 8 F issued in 1839. — Type locality: none given. — Type age: Recent. — Type species (SD Humbert, 1863) of Parmarion P. Fischer, 1855. Also type species (SD Schileyko, 2003) of the synonymous Rigasia H. Adams & A. Adams, 1858. — Current status: Parmarion problematicus (Deshayes, 1851) (MolluscaBase).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF5CCCF8FF671723FBD7FE95.taxon	description	marminii, Achatina – Deshayes, 1830 a-EncyMeth: 11; 1831 c: [1], pl. 19. — Type locality: none given; Mr. Marmin. — Type age: Recent. — Current status: taxon inquirendum.	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF5CCCF8FF671723FBD7FE95.taxon	description	semisulcata, Achatina – Deshayes, 1830 a-EncyMeth: 11; 1851 - HistNatTerrFluv 2 (2): 186 - 187, 17, pl. 123, figs 7 - 8. — Type locality: none given. — Type age: Recent. — Current status: nomen dubium. straminea, Achatina – Deshayes, 1851 - HistNatTerrFluv 2 (2): 172 - 173, 18, pl. 123, figs 11 - 12. — Type locality: none given. — Type age: Recent. — Type species (OD) of Laevoleacina Pilsbry, 1907. The Cuban Laevoleacina straminea (Deshayes, 1851) (Schileyko 2000: 854 - 855, fig. 1126 B-C). — Current status: Oleacina (Laevoleacina) straminea (Deshayes, 1830) (Espinosa et al. 2017: 79, 104, pl. 23 A). ● tournoueri, Paeudoleacina – Pacaud (2008: 77) listed this as a Deshayes (1863), but the author of this species was Denainvilliers, 1875 (Le Renard & Pacaud 1995: 130).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF5CCCF8FC0D1041FBD5FA5C.taxon	description	bracteola, Helix – Deshayes, 1850 - HistNatTerrFluv 1: 84; 1851 - HistNatTerrFluv: 15, pl. 86, fig. 2, ex Férussac ms. Uncaptioned pl. 86 issued in 1840. — Type locality: Martinique; Rang. — Type age: Recent. — Current status: synonym of Lacteoluna selenina (Gould, 1848) [Helix] (Pilsbry 1940: 980 - 982, figs 568 - 569, without synonymy). dissita, Helix – Deshayes, 1850 - HistNatTerrFluv 1: 248 - 249; 1851 - HistNatTerrFluv: 5, pl. 16, figs 1 - 2. — Type locality: “ Amerique? ”. — Type age: Recent. — Type material: MNHN-IM- 2000 - 1880, 2 syntypes. — Current status: the Caribbean Hispaniolana dissita (Deshayes, 1850) (MolluscaBase).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF5CCCF9FC401247FD04FE42.taxon	description	bornii, Helix – Deshayes, 1850 - HistNatTerrFluv 1: 374 - 375; 1851 - HistNatTerrFluv: 12, pl. 63, figs 7 - 8, ex Chemnitz ms. Uncaptioned pl. 63 issued in 1822. — Type locality: Puerto Rico. — Type age: Recent. — Current status: synonym of Caracolus marginella (Gmelin, 1791) (van der Schalie 1948: 75).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF5DCCFBFEC9164DFD25FB43.taxon	description	barrandii, Helix – Deshayes, 1863 - DescrCoqFoss: 808, 51, pl. 51, figs 19 - 21. — Type localities: Marigny, Fay-aux-Loges, La Chapelle & Chartres. — Type age: Oligocene (Rupelian and Chattian). — Current status: synonym of Cepaea moroguesi (Brongniart, 1810) [Helix] (Wenz 1923: 639), now Palaeotachea moroguesi (Brongniart, 1810) (MolluscaBase). beyrichi, Helix – Deshayes, 1863 - DescrCoqFoss: 810 - 811, 52, pl. 52, figs 1 - 4. — Type locality: Fontainebleau. — Type age: Oligocene (Rupelian). — Current status: Cepaea beyrichi (Deshayes, 1863) (Wenz 1923: 608). brongniarti, Helix – Deshayes, 1863 - DescrCoqFoss: 812 - 813, 51, as H. brongnarti, pl. 51, figs 14, 17 - 18 [fig. 14 not listed in text]. — Type localities: Pontournois, Fay-aux-Loges & Marigny. — Type age: Miocene (Aquitanian). 1865 - DescrCoqFoss: 666 [correction noted]. — Current status: synonym of Cepaea moroguesi (Brongniart, 1810) (Wenz 1923: 639), now Palaeotachea moroguesi (Brongniart, 1810) (MolluscaBase).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF5DCCFBFEC9164DFD25FB43.taxon	description	defrancii, Helix – Deshayes, 1863 - DescrCoqFoss: 804 - 805, 51, pl. 51, figs 11 - 13 [in text as figs 11 - 14]; 1863 - DescrCoqFoss: 666 [correction noted]. — Type localities: Marigny, La Chapelle, Fay-aux-Loges, Neuville-aux-Bois, Blois & Montabuzard. — Type age: Miocene (Aquitanian). — Current status: synonym of Cepaea moroguesi (Brongniart, 1810) [Helix] (Wenz 1923: 639), now Palaeotachea moroguesi (Brongniart, 1810) (MolluscaBase). discordialis, Helix – Deshayes, 1839 - HistNatTerrFluv 1: 13 - 14; 1851 - HistNatTerrFluv: 14, pl. 74, fig. 1, ex Férussac ms. Uncaptioned pl. 74 issued in 1832. — Type locality: not stated. — Type age: Recent. — Type material: MNHN-IM- 2000 - 1863, holotype. — Type species (M) of Erigone Albers, 1850, non Audoin, 1826 [Arachnida]; Helerigone Strand, 1910, replacement name, but now considered to be a synonym of Chloritis Beck, 1837. — Current status: the Philippines Chloritis discordialis (Deshayes, 1839) (MolluscaBase). discus, Helix – Deshayes, 1850 - HistNatTerrFluv 1: 360 - 361; 1851 - HistNatTerrFluv: 12, pl. 62 A, fig. 4, non Thomä, 1845. — Type locality: none given. — Type age: Recent. — Type material: MNHN-IM- 2000 - 2025, holotype. — Current status: synonym of Obba parmula (Broderip, 1841) [Helix] from the Philippine Islands (MolluscaBase). dubia, Helix – Deshayes, 1824 - DescrCoqFoss: 55, 3, pl. 6, fig. 3, non G. Fischer, 1807; 1832 - EncyMeth: 250; 1863 - DescrCoqFoss: 826 [species now doubtful]. — Type localities: Saint-Cyr & Isle of Wight. — Type age: Recent. — Current status: Taxon inquirendum (Wenz 1923: 1111). duvauxii, Helix – Deshayes, 1832 - EncyMeth: 251 - 252; 1838 - HistNatAnim 2: 138; 1843 - HistNatAnim 3: 318. — Type locality: Touraine; Mr. Duvau. — Type age: Miocene. Synonym of Hemicycla asperula (Deshayes, 1832) (Wenz 1923: 574). — Current status: synonym of Megalotachea turonensis (Deshayes, 1832) (Truc 1971: 281). eumicron, Helix – Deshayes, 1863 - DescrCoqFoss: 821 - 822, 52, pl. 52, figs 19 - 22. — Type locality: Côte Saint-Martin (Étampes). — Type age: Oligocene (Rupelian). — Type material: MNHN. F. J 04143, syntype. — Current status: taxon inquirendum (Wenz 1923: 1111). eversa, Helix – Deshayes, 1851 - HistNatTerrFluv 1: 395 - 396, 22, Foss pl. 1, figs 5 - 7. — Type locality: Faluns de Touraine. — Type age: Miocene. Synonym of – Current status: Megalotachea turonensis (Deshayes, 1831) [Helix] (Höltke & Rasser 2016: 251). exornata, Helix – Deshayes, 1850 - HistNatTerrFluv 1: 220 - 221, pl. 17 A, figs 9 - 11; 1851 - HistNatTerrFluv: 5, in fig. expl. as " H. ornata ". Uncaptioned pl. 17 A issued in 1839. — Type locality: none given; Férussac coll. — Type age: Recent. — Current status: Leptaxis exornata (Pilsbry 1888 - 1889: 198, pl. 51, figs 13 - 14, as Helix (Leptaxis). filosa, Helix – Deshayes, 1850 - HistNatTerrFluv 1: 220; 1851 - HistNatTerrFluv: 10, pl. 29 A, figs 22 - 23. — Type locality: none given. — Type age: Recent. — Current status: possibly Cepaea (Pilsbry 1895: 322, following L. Pfeiffer and as Helix (Tachea W. Turton, 1831), a junior homonym, non J. Fleming, 1822. gibbosula, Helix – Deshayes, 1850 - HistNatTerrFluv 1: 224; 1851 - HistNatTerrFluv: 16, pl. 107, figs 1 - 3 [figs cited in the text in error as “ 1 - 2, 8 ”]. — Type locality: none given. — Type age: Recent. — Current status: possibly Cepaea (Pilsbry, 1895: 322, following L. Pfeiffer and as Helix (Tachea W. Turton, 1831), subgenus a junior homonym, non J. Fleming, 1822. hongkongensis, Helix – Deshayes, 1874 b: 3, pl. 3, figs 7 - 9; 1876: 87 - 88. — Type locality: Hong Kong, China. — Type age: Recent. — Current status: taxon inquirendum. insubrica, Helix – Deshayes, 1840 - HistNatTerrFluv 1: 30; 1851 - HistNatTerrFluv: 13, pl. 68, fig. 3, non De Cristofori & Jan, 1832. Uncaptioned pl. 68 issued in 1832. The figure was not those cited in the text, pl. 69, figs 1 - 5, which were instead of Helix setipila Rossmässler, 1835. — Type locality: Near Lake Como, Italy. — Type age: Recent. — Current status: synonym of the European Chilostoma tigrinum (De Cristofori & Jan, 1832) [Helix]. However, the latter is also a primary junior homonym, non Férussac, 1821, so a replacement name may be needed. joncheryensis, Helix – Deshayes, 1858: 553, nomen nudum. lucasii, Helix – Deshayes, 1850 - HistNatTerrFluv 1: 122 - 124; 1851 - HistNatTerrFluv: 16, pl. 96, figs 8 - 12. — Type locality: Oran, Algeria; sandy areas near sea. — Type age: Recent. — Type material: MNHN- IM- 2000 - 31721, 10 syntypes; MNHN-IM- 2000 - 31722, 3 syntypes; MNHN-IM- 2000 - 31723, 2 syntypes; MNHN-IM- 2000 - 31724, 3 syntypes. — Current status: synonym of Otala lactea (O. F. Müller, 1774) [Helix] (Kneubühler et al. 2019: 17 - 19, fig. 16 D).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF5DCCFBFEC9164DFD25FB43.taxon	description	noueli, Helix – Deshayes, 1863 - DescrCoqFoss: 803 - 804, 51, pl. 51, figs 15 - 16. — Type localities: Montabuzard, La Chapelle, near Chartres & Della Badia (Piémont). — Type age: Eocene (Lutetian). — Type material: MNHN. F. J 04129, syntype. — Current status: Cepaea noueli (Deshayes, 1863) (Wenz 1923: 647). obscura, Helix – Deshayes, 1874 b: 13, pl. 3, figs 11 - 12; 1876: 86 - 87, non O. F. Müller, 1774. — Type locality: Hong Kong, China. — Type age: Recent. — Current status: taxon inquirendum. ornata, Helix – see: exornata, Helix. perforata, Helix – Deshayes, 1874 b: 14, pl. 3, figs 29 - 32; 1876: 92 - 93. — Type locality: Peking, China. — Type age: Recent. Preoccupies Helix niciensis var. perforata Caziot, 1910. — Current status: taxon inquiredum. plicatilis, Helix – Deshayes, 1870 b: 20 - 21; 1874 b: 13, pl. 2, figs 13 - 15. — Type locality: Moupin, Tibet. — Type age: Recent. — Type material: MNHN-IM- 2000 - 34195, 8 syntypes. — Current status: taxon inquirendum.	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF5DCCFBFEC9164DFD25FB43.taxon	description	sicana, Helix – Deshayes, 1838 - HistNatAnim 2: 130 - 131; 1850 - HistNatTerrFluv 1: 244 - 245; 1851 - HistNatTerrFluv: 9, pl. 28 B, fig. 7, ex Férussac ms. — Type locality: Sicily. — Type age: Recent. — Current status: Marmorana (Murella) platychela [Menke, 1830] sicana (Deshayes, 1838) (K. L. Pfeiffer 1931: 106 - 107, pl. 9, fig. 32, as “ Fer [ussac]. ”). subechinata, Helix – Deshayes, 1870 b: 22; 1874 b: 13, pl. 2, figs 19 - 21. — Type locality: Moupin, Tibet. — Type age: Recent. — Type material: MNHN-IM- 2000 - 34198, 2 syntypes. — Current status: taxon inquirendum. sudetica, Helix – Deshayes, 1850 - HistNatTerrFluv 1: 41; 1851 - HistNatTerrFluv: 14, pl. 69 J, figs 18 - 19, ex Charpentier ms. — Type localities: Silésie, Warth & near Neiffe; Mr. Audouin. Uncaptioned pl. 69 J issued in 1841. — Type age: Recent. — Current status: synonym of Faustina faustina (Rossmässler, 1835) [Helix] (R. Bank, pers. comm., November 23, 2022), type species of Faustina Kobelt, 1904, by tautonomy. tessellata, Helix – Deshayes, 1850 - HistNatTerrFluv 1: 232 - 233; 1851 - HistNatTerrFluv: 5, pl. 17 A, figs 12 - 13, ex Férussac ms. Uncaptioned pl. 17 A issued in 1839. — Type localities: Majorca & Baléres. — Type age: Recent. — Current status: synonym of Allognathus grateloupi (Graells, 1846) [Helix] (R. Bank, pers. comm., November 23, 2022).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF5DCCFBFEC9164DFD25FB43.taxon	description	● chastellii, Helix – This species was credited to “ Deshayes in Férussac, 1832 ”, in Fischer-Piette et al. (1994: 230), but Deshayes was not involved when Férussac made this name available, although Deshayes did discuss it in his part of this work in 1850. — Current status: Kalidos chastellii (Férussac, 1832).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF5DCCFBFEC9164DFD25FB43.taxon	description	atrolineata, Helix – Deshayes, 1851 - HistNatTerrFluv: 10, pl. 29 A, figs 4 - 7; not in text. — Type locality: none given. — Type age: Recent. — Current status: taxon inquirendum. complanata, Helix – Deshayes, 1839 - HistNatTerrFluv 1: 9 - 10; 1851 - HistNatTerrFluv: 13, pl. 69 B, fig. 2, non Linnaeus, 1758. — Type locality: Bolivia. — Type age: Recent. — Current status: taxon inquirendum. nicobarica, Helix – Deshayes, 1839: [1], pl. 3, ex Chemnitz ms. — Type locality: none given, but Nicobar Islands implied. — Type age: Recent. — Current status: taxon inquirendum. perdita, Helix – Deshayes, 1876: 93 - 95, 99, pl. 1, figs 12 - 15, non Reeve, 1851. — Type locality: Peking, China. — Type age: Recent. — Current status: taxon inquirendum. scalprum, Helix – Deshayes, 1850 - HistNatTerrFluv 1: 362 - 363; 1851 - HistNatTerrFluv: 13, pl. 64 A, figs 2 - 4 [in 1850 text in error as “ pl. 62 A ”], ex Valenciennes ms. — Type locality: none given. — Type age: Recent. — Current status: taxon inquirendum. semiparita, Helix – Deshayes, 1850 - HistNatTerrFluv 1: 187 - 188; 1851 - HistNatTerrFluv: 15, pl. 89, fig. 5. — Type locality: none given. — Type age: Recent. — Current status: taxon inquirendum. striatissima, Helix – Deshayes, 1876: 84, 99, pl. 1, figs 1 - 4. — Type locality: Hong Kong. — Type age: Recent. — Current status: taxon inquirendum. villae, Helix – Deshayes, 1850 - HistNatTerrFluv 1: 295 - 296, pl. “ 91 ” [90], fig. 9; 1851 - HistNatTerrFluv: 15. — Type locality: none given. — Type age: Recent. Preoccupies Helix villae L. Pfeiffer, 1856, which has been synonymized with Oxychilus mortilleti (L. Pfeiffer, 1859) [Helix]. — Current status: taxon inquirendum.	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF5FCCE4FEC41133FA1CFC11.taxon	description	ardouini, Helix – Deshayes, 1832 - EncyMeth: 266. — Type locality: none given; Astrolabe. — Type age: Recent. — Current status: synonym of Papuina lituus (Lesson, 1831) [Helix], the type species (OD) of Papuina Martens, 1860 (MolluscaBase).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF5FCCE4FEC41133FA1CFC11.taxon	description	buvignieri, Helix – Deshayes, 1874 b: 14, pl. 3, figs 22 - 24; 1876: 90 - 91. — Type locality: Peking, China. — Type age: Recent. — Current status: listed under Helix (Cathaica) by Pilsbry (1892: 212 - 213, pl. 48, figs 21 - 25). cailliaudii, Helix – Deshayes, 1839 b: 229; 1839 e: 1 - 2, pl. 5; 1850 - HistNatTerrFluv 1: 253, pl. 93, figs 5 - 6; 1851 - HistNatTerrFluv: 15. — Type locality: Manila, Philippine Islands. — Type age: Recent. — Type material: MNHN-IM- 2000 - 1852, 2 syntypes; MNHN-IM- 2000 - 1854, syntype. — Current status: Calocochlea cailliaudi (Deshayes, 1839) (MolluscaBase). carolus, Helix – Deshayes, 1861 b: 348 - 350, pl. 16, figs 1 - 2. — Type locality: northern end Luzon Island, Philippine Islands; C. Semper. — Type age: Recent. — Current status: Helicobulinus carolus (Deshayes, 1861) (MolluscaBase).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF5FCCE4FEC41133FA1CFC11.taxon	description	davidi, Helix – Deshayes, 1870 b: 20; 1874 b: 13, pl. 2, figs 10 - 11. — Type locality: Moupin, Tibet. — Type age: Recent. — Type material: MNHN-IM- 2000 - 34194, 5 syntypes. — Type species (SD Pilsbry, 1895) of Armandia Ancey, 1883, non Filippi, 1862 [Polychaeta]. Armandiella Ancey, 1901, replacement name. — Current status: Armandiella davidi (Deshayes, 1870) (Schileyko 2004: 1680 - 1681, fig. 2167). dionaea, Helix – Deshayes, 1850 - HistNatTerrFluv 1: 276 - 277; 1851 - HistNatTerrFluv: 9, pl. 28 A, figs 11 - 12. — Type locality: none given. — Type age: Recent. — Current status: the Philippines Trachystyla cryptica [Broderip, 1841; Helix] dionaea (Deshayes, 1850) (MolluscaBase). egregia, Helix – Deshayes, 1850 - HistNatTerrFluv 1: 302 - 303; 1851 - HistNatTerrFluv: 16, pl. 102, figs 17 - 18. — Type locality: none given. — Type age: Recent. — Type material: MNHN- IM- 2000 - 2027, syntype. — Current status: listed under Helix (Camaena) by Pilsbry (1891: 210, pl. 37, figs 43 - 44). gaimardi, Helix – see: gaymardi, Helix below. gaymardi, Helix – Deshayes, 1831 c: [1], pl. 29 [on pl. as H. “ gaymardii ”]; 1832 - EncyMeth: 210 - 211; 1839 - HistNatTerrFluv 1: 14, as H. “ gaimardi ” (ICZN Code Art. 24.2.4); 1838 - HistNatAnim 2: 100; 1843 - HistNatAnim 3: 304, both as H. “ gaimardi ”; 1851 - HistNatTerrFluv: 14, pl. 72, figs 6 - 10, as H. “ gaimardi ” [in 1839: 4 mistakenly cited as “ figs 7 - 10 ”]. — Type locality: none given [New Guinea]; Quoy & Gaimard. — Type age: Recent. — Type material: MNHN-IM- 2000 - 2028, 2 syntypes. — Current status: Chloritis gaymardi (Deshayes, 1831) (MolluscaBase). inopinata, Helix – Deshayes, 1870 b: 21; 1874 b: 12, pl. 2, figs 3 - 5. — Type locality: Moupin, Tibet. — Type age: Recent. — Type material: MNHN-IM- 2000 - 34196, syntype. — Current status: Trichocathaica inopinata (Deshayes, 1870) (MolluscaBase). japonica, Helix – Deshayes, 1850: 58 - HistNatTerrFluv 1: 58 - 59; 1851 - HistNatTerrFluv: 13, pl. 69 H, figs 5 - 6, ex Férussac ms, non L. Pfeiffer, 1847. Uncaptioned pl. 69 H issued in 1840. — Type locality: Japan. — Type age: Recent. — Current status: synonym of Euhadra peliomphala (L. Pfeiffer, 1850) (Pilsbry 1895: 213). lutuosa, Helix – Deshayes, 1874 b: 13, pl. 3, figs 18 - 21; 1876: 89 - 90. — Type locality: Peking, China. — Type age: Recent. — Current status: listed under Helix (Cathaica) by Pilsbry (1892: 212, pl. 48, figs 26 - 28). nucleus, Helix – Deshayes, 1876: 85 - 86, pl. 3, figs 4 - 6, non Gmelin, 1791. — Type locality: Shanghai, China. — Type age: Recent. — Current status: Bradybaena similaris [Férussac, 1822; Helix] nucleus (Deshayes, 1874) (MolluscaBase), but if recognized as a subspecies, it would have to be renamed. obliquata, Helix – Deshayes, 1850 - HistNatTerrFluv 1: 219 - 220; 1851 - HistNatTerrFluv: 9, pl. 28 A, figs 3 - 4. — Type locality: none given. — Type age: Recent. — Current status: Crystallopsis obliquata (Deshayes, 1850), taxon inquirendum (MolluscaBase). oenostoma, Helix – Deshayes, 1850 - HistNatTerrFluv 1: 304 - 304; 1851 - HistNatTerrFluv: 15, pl. 95, fig. 5 [pl. given in text as “ 15 ”]. — Type locality: none given. — Type age: Recent. — Type material: MNHN-IM- 2000 - 31770, syntype. — Current status: listed under Helix (Euhadra) by Pilsbry (1892: 223). pekienensis, Helix – Deshayes, 1874 b: 13, pl. 3, figs 14 - 15; 1876 a: 88 - 89. — Type locality: mountains west of Peking, China. — Type age: Recent. — Current status: Cathaica pekienensis (Deshayes, 1874) (Yen 1939, mispelled as H. pekiensis). See var. conoidea, above. psittacina, Helix – Deshayes, 1861 b: 350 - 351, pl. 16, figs 3 - 5. — Type locality: northern end Luzon Island, Philippine Islands; C. Semper. — Type age: Recent. — Current status: Chloraea psittacina (Deshayes, 1861) (MolluscaBase). quoyi, Helix – Deshayes, 1838 - HistNatAnim 2: 105, replacement name for H. undulata Quoy & Gaimard, 1832, “ non Férussac, 1821 ”, but actually non Gmelin, 1791, nec Michaud, 1831; 1843 - HistNatAnim 3: 305 - 306; 1850 - HistNatTerrFluv 1: 47; 1851 - HistNatTerrFluv: 14, pl. 73 B, fig. 4. — Type locality: Lake Tondano, Celebes [North Sulawesi, Indonesia]. — Type age: Recent. — Current status: Obba quoyi (Deshayes, 1838) (MolluscaBase).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF5FCCE4FEC41133FA1CFC11.taxon	description	thibetica, Helix – Deshayes, 1870 b: 21 - 22; 1874 b: 12, pl. 2, figs 8 - 9. — Type locality: Moupin, Tibet. — Type age: Recent. — Type material: MNHN-IM- 2000 - 34197, 3 syntypes. — Current status: listed under Helix (Cathaica) by Pilsbry (1892: 208, pl. 47, figs 84 - 86).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF41CCE5FEC116ACFE97FAC3.taxon	description	●	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF41CCE5FEC2130AFB2DFBF5.taxon	description	bulbina, Helix – Deshayes, 1850 - HistNatTerrFluv 1: 108 - 109; 1851 - HistNatTerrFluv: 15, pl. 85, figs 14 - 18. — Type localities: Ohio, Mississippi & Missouri. — Type age: Recent. — Current status: possible synonym of Allogona profunda (Say, 1821) [Helix] (MolluscaBase). cicercula, Helix – Deshayes, 1851 - HistNatTerrFluv 1: 390, 16, pl. 107, figs 4 - 10, non Gould, 1846 [Hawaiian land snail], nec L. Pfeiffer, 1848. — Type locality: Peru. — Type age: Recent. — Current status: synonym of Praticolella griseola (L. Pfeiffer, 1841) [Helix] (Tryon 1888: 76). convexa, Helix – Deshayes, 1832 - EncyMeth: 253, ex Rafinesque ms, non Link, 1807; 1850 - HistNatTerrFluv 1: 144; 1851 - HistNatTerrFluv: 11, pl. 50 A, fig. 2. — Type locality: “ Central America ”. — Type age: Recent. — Current status: synonym of the North American Euchemotrema fraternum (Say, 1824) (Pilsbry 1940: 681 - 684, fig. 422 a).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF41CCE5FEC2130AFB2DFBF5.taxon	description	zaelta, Helix – Deshayes, 1850 - HistNatTerrFluv 1: 139. Incorrect subsequent spelling of Helix zaleta A. Binney, 1837, ex Say ms, now Mesodon zaletus (A. Binney, 1837).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF41CCE6FC97130AFDD4FCED.taxon	description	humboldtiana, Helix – Although sometimes credited to Deshayes in the Histoire naturelle générale et particulière des mollusques terrestres et fluviatiles, it did not appear there until 1850 and was first made available by L. Pfeiffer (1841: 37). It is the type species of Humboldtiana Ihering, 1892. Class BIVALVIA Linnaeus, 1758	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF42CCE7FECA17F6FE43FC0B.taxon	description	miliaris, Nucula – Deshayes, 1829 - DescrCoqFoss: 235, 18, pl. 36, figs 7 - 9. — Type localities: Mouchy-le-Châtel, Thiverval-Grignon & Parnes. — Type age: Eocene (Lutetian). — Type species (M) of Nuculina d’Orbigny, 1844, non Porro, 1837 [Crustacea], now considered to be a synonym of Nucinella S. V. Wood, 1851. — Current status:	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF42CCE7FECA17F6FE43FC0B.taxon	description	rothomagensis, Nucula – Deshayes, 1858 - TraitElem: 303. Replacement name for Nucula obesa d’Orbigny, 1844 (d’Orbigny 1844: 180 - 181, pl. 304, figs 10 - 14), non “ Münster ”, actually non Goldfuss, 1837. — Type localities: Sainte-Catherine Mountain, Rouen, Seine-Maritime. — Type age: Cretaceous (Turonian). — Current status: taxon inquirendum.	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF42CCE7FECA17F6FE43FC0B.taxon	description	● planata, Nucula – Leymerie, 1841: 336, nomen nudum; 1842: 7, 25, pl. 9, figs 3 a-b, 4, ex Deshayes ms. — Type localities: Bernon & Rumilly. — Type age: Cretaceous (Hauterivian). Nucula planata Leymerie, 1842 (Calzada et al. 2013: 32 - 33, pl. 1, figs 8 - 9, as “ Deshayes ”). — Current status: Leionucula planata (Leymerie, 1842).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF43CCE7FE9A1379FA09F907.taxon	description	althei, Leda – Deshayes, 1858 - TraitElem: 283. Replacement name for Nucula (Dacryomya) brevirostris Alth, 1850 (Alth 1850: 233, pl. 12, fig. 16), non J. Phillips, 1836. — Type locality: Lemberg [Lviv, Ukraine]. — Type age: Cretaceous? – Current status: taxon inquirendum.	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF43CCE0FC46128FFD39F8A3.taxon	description	comptum, Cardium – Deshayes, 1857 - TraitElem: 49. Replacement name for Cardium tenuisulcatum Münster, 1840 (Münster 1840: 65, pl. 13, fig. 13), non Nyst, 1836. — Type locality: Elbersreuth, Bavaria, Germany. — Type age: Devonian. Hylleberg (2004: 446, as “ 1853 ”, 799). — Current status: perhaps Praecardiidae (M. Amler, pers. comm., March 14, 2023). cornutum, Cardium – Deshayes, 1857 - TraitElem: 48. Replacement name for Cardium ovatum (Münster, 1840: 70, pl. 12, fig. 18) [Lunulacardium], non Deshayes, 1838. — Type locality: Schübelhammer, Germany. — Type age: Devonian (Famennian). Hylleberg (2004: 450 - 451, as “ 1853 ”, 670). This species name did not need to be replaced, was not used by later authors, and ICZN Code Art. 59.3 can be applied. — Current status: Praecardiidae (Rogalla & Amler (2006: 44). However, Lunulacardium ovatum Münster is a nomen dubium of uncertain genus, not a Lunulacardium (Nagel-Myers & Amler 2007: 55, pl. 1, fig. 14).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF43CCE0FC46128FFD39F8A3.taxon	description	parvum, Cardium – Deshayes, 1857 - TraitElem: 45, non da Costa 1778, nec Mawe, 1823, nec G. B. Sowerby, II, 1841, nec Philippi, 1844. Replacement name for Cardium exiguum Eichwald, 1840 (Eichwald 1840: 84 - 85; 1859: 6, pl. 51, fig. 8; 1860: 1024), non Gmelin, 1791. — Type locality: Eichwald’s species was from Valdaï, Russia. — Type age: Carboniferous (Murchison et al. 1845: 390). We are unaware of any modern treatment of Eichwald’s junior homonym and are guessing it belongs in this family. Use of this concept would require a replacement name. Gmelin’s species is the Recent European Parvicardium exiguum (Gmelin, 1791). — Current status: Praecardiidae (M. Amler, pers. comm., March 20, 2023).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF44CCE2FEC91316FBA4F9D1.taxon	description	interjecta, Modiola (Modiolaris) – Deshayes, 1858 - DescrCoqFoss: 75, pl. 75, figs 16 - 18; 1861 - DescrCoqFoss: 17. — Type locality: Thiverval-Grignon. — Type age: Eocene (Lutetian). — Current status: Musculus (Planimodiola) interjectus (Deshayes, 1858) (Glibert & Van de Poel 1965 b: 83; Le Renard & Pacaud 1995: 83; Pacaud 2008: 81).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF44CCE2FEC91316FBA4F9D1.taxon	description	vaudini, Mytilus (Septifer) – Deshayes, 1858 - DescrCoqFoss: 75, pl. 75, figs 6 - 9; 1861 - DescrCoqFoss: 31. — Type localities: Laon & Mons-en-Laonnais. — Type age: Eocene (Ypresian). — Current status: synonym of Septifer serratus (Melleville, 1843) [Dreissena] (Glibert & Van de Poel 1965 b: 77). ● amygdaloides, Modiola – Leymerie, 1841: 342, nomen nudum; 1842: 8, 25, pl. 6, fig. 4 a-b, ex Deshayes ms. — Type localities: Marolles-sous-Lignières & Chenay. — Type age: Cretaceous (Hauterivian). — Current status: Lithophaga amygdaloides (Leymerie, 1842) (Masse et al. 2022: 5, as “ Deshayes ”).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF47CCEEFED114A2FA1CF97E.taxon	description	Modioliformia – Deshayes, 1860 - DescrCoqFoss: 866, 893. — Type species (SD Newell, 1960): Arca obliquaria Deshayes, 1829. Now considered a synonym of Barbatia J. E. Gray, 1842. altera, Arca – Deshayes, 1858 - DescrCoqFoss: 69, pl. 69, figs 14 - 16. Error in this plate explanation for Arca disjuncta (see below).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF47CCEEFED114A2FA1CF97E.taxon	description	condita, Arca (Barbatia) – Deshayes, 1858 - DescrCoqFoss: 66, pl. 66, figs 7 - 8, 69, as Arca “ geminata ”, pl. 69, figs 28 - 30; 1860 - DescrCoqFoss: 878 - 879 [mentioning geminata]; 1865 - DescrCoqFoss: 666 [error noted]. — Type localities: Chaumont-en-Vexin, les Groux, Gomerfontaine, Montmirail, Parnes, Thiverval-Grignon, La Ferme de l’Orme, Damery, Fleury-la-Rivière, Chamery, Cumières, Hermonville, Boursault, Saint-Félix, Chambors, Auvers-sur-Oise, Bouconvillers, Caumont & La Ferté-sous-Jouarre. — Type age: Eocene (Lutetian-Bartonian). — Current status: synonym of Barbatia (Barbatia) appendiculata (J. Sowerby, 1820) (Glibert & Van de Poel 1965 a: 37).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF47CCEEFED114A2FA1CF97E.taxon	description	inaspecta, Arca; see below under: obliquaria, Arca.	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF47CCEEFED114A2FA1CF97E.taxon	description	setosa, Arca – Deshayes, 1858 - TraitElem: 350. Replacement name for Arca obliqua Reeve, 1844 a (pl. 6, fig. 41), non Portlock, 1843, nec Philippi, 1844. However, an earlier replacement was Arca setigericosta Nyst, 1848 (Nyst 1848: 68). — Type locality: west coast of Africa. — Type age: Recent. — Current status: the Asian Anadara setigericosta (Nyst, 1848) (Huber 2010 a: 136).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF47CCEEFED114A2FA1CF97E.taxon	description	● scapulina, Scapularca – Listed by Pacaud (2008: 80) as “ Deshayes, 1805 ”, an error for Lamarck, 1805. striatularis, Arca – Deshayes, 1858 - DescrCoqFoss: 67, pl. 67, figs 1 - 2; 1860 - DescrCoqFoss: 894 - 895. Made available byMelleville (1843: 84 [37 - 38, 82], pl. 2, figs 12 - 14). Ciry Salsogne. — Type age: Eocene (Ypresian). Glibert & Van de Poel (1965 a: 42) had as “ Deshayes ”.	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF4ACCEFFC6D1363FEAAFE3C.taxon	description	sowerbyi, Cucullaea – Deshayes, 1858 - TraitElem: 368. Replacement name for Cucullaea carinata J. Sowerby, 1818 (J. Sowerby 1818: pl. 207, fig. 1), non Arca carinata J. Sowerby, 1813 (J. Sowerby 1813: 96, pl. 44, lower two figs), now Nanonavis carinata (J. Sowerby, 1813). — Type locality: none given. — Type age: Blackdown Formation [early Cretaceous (Albian)]. — Current status: taxon inquirendum.	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF4BCCE8FF1115A2FEE4FE52.taxon	description	angusticardo, Pectunculus – Deshayes, 1858 - DescrCoqFoss: 73, pl. 73, figs 12 - 13; 1860 - DescrCoqFoss: 855, 857, as Pectunculus polymorphus angusticardo. — Type locality: none given. — Type age: Eocene (Ypresian). Synonym of Axinaea (Axinaea) polymorpha (Deshayes, 1860) (Cossmann 1887: 122).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF4BCCE8FF1115A2FEE4FE52.taxon	description	numismalis, Pectunculus – Deshayes, 1835 a: 321, nomen nudum. obliteratus, Pectunculus – Deshayes, 1858 - DescrCoqFoss: 70, pl. 70, figs 21 - 23; 1860 - DescrCoqFoss: 848. — Type localities: Etréchy, Morigny-Champigny & Jeurre; Weinheim, Germany. — Type age: Oligocene (Rupelian). — Current status: synonym of Axinactis (Tucetilla) angusticostata (Lamarck, 1807) [Pectunculus] (Glibert & Van de Poel 1965 a: 77). paucidentatus, Pectunculus – Deshayes, 1858 - DescrCoqFoss: 73, pl. 73, figs 16 - 17; 1860 - DescrCoqFoss: 852 - 853. — Type localities: Sinceny, Vauxbuin, Cuise-la-Motte & Compiègne; Wolwich, England. — Type age: Eocene (Ypresian). — Current status: Glycymeris terebratularis [Lamarck, 1805] paucidentata (Deshayes, 1858) (Glibert & Van de Poel 1965 a: 90; Le Renard & Pacaud 1995: 81).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF4BCCE8FF1115A2FEE4FE52.taxon	description	semiauritus, Pectunculus – Deshayes, 1839 - TraitElem: 22, pl. 34, figs 25 - 27; 1858 - TraitElem: 330. — Type localities: Angers (France) & Vienne (Austria). — Type age: Miocene. — Current status: Synonym of Limopsis (Pectunculina) recisus (Defrance, 1826) (Dollfus & Dautzenberg 1901: 266), now Pectunculina recisa (Defrance, 1826).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF4CCCE8FEDA1669FBB3FBDF.taxon	description	quadrilatera, Arca – Glibert & Van de Poel (1965 a: 61) listed this species as it were by Deshayes in Watelet, 1829, but it was made available byLamarck (1805), the type species of the Deshayes genus Quadrilatera (see above).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF4CCCE9FC5C10CBFDC3FA60.taxon	description	paucidentata, Arca; see under: caillati, Arca, above.	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF4DCCE9FF3A1316FBE9FE0E.taxon	description	(Glibert & Van de Poel 1965 a: 73). — Current status: Limarca altera Deshayes, 1858 (Le Renard & Pacaud 1995: 81). nanus, Pectunculus – Deshayes, 1829 - DescrCoqFoss: 226, 18, pl. 36, figs 4 - 6; 1832 - EncyMeth: 744 - 745; 1835 - HistNatAnim 2: 501; 1839 - HistNatAnim 3: 658. — Type localities: Thiverval-Grignon, Parnes & Mouchy-le-Châtel. — Type age: Eocene (Lutetian). — Current status: Limarca nana (Deshayes, 1829) (Le Renard & Pacaud 1995: 81; Pacaud 2008: 81).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF4DCCEAFC4317AEFE33FB9D.taxon	description	faujasi, Avicula – Deshayes, 1836 - HistNatAnim 2: 104; 1843 - HistNatAnim 3: 42. — Type locality: Maastricht, Netherlands; Ciply, Belgium. — Type age: Cretaceous (Maastrichtian). — Current status: taxon inquirendum. ornata, Perna – Deshayes, 1858 - DescrCoqFoss: 81, pl. 77, figs 9 - 11 [not in text]. — Type locality: presumably Paris Bassin. — Type age: Paleogene. — Current status: synonym of Aviculoperna levesquei (d’Orbigny, 1850) [Avicula] (Chelot 1885: 199). radiata, Avicula – Deshayes, 1830 a-EncyMeth: 102, non Leach, 1814. — Type locality: none given. — Type age: Recent? Both preoccupy Avicula radiata Phillips, 1836, which was renamed Avicula nystiana de Koninck, 1842. — Current status: taxon inquirendum.	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF4ECCEAFE841276FD07F85A.taxon	description	Gervilia – Deshayes, 1825 - DictClass 7: 338 - 339. Subsequent incorrect spelling of Gervillia Defrance, 1820. eocaenica, Gervillia – Deshayes, 1858 - DescrCoqFoss: 81, pl. 77, figs 15 - 17; 1861 - DescrCoqFoss: 55. — Type locality: Hérouval. — Type age: Eocene (Ypresian). — Current status: Gervillia eocaenica Deshayes, 1858 (Le Renard & Pacaud 1995: 83). ● anceps, Gervillia – Leymerie, 1841: 342, nomen nudum; 1842: 9, 26, pl. 10, fig. 3 a-c, ex Deshayes ms. — Type localities: Soulaines-Dhuys, Thieffrain & Vendeuvre-sur-Barse. — Type age: Cretaceous (Hauterivian). — Current status: synonym of Gervillella aviculoides (J. Sowerby, 1814) [Perna] (Lazo 2003: 773 - 776, fig. 8).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF4ECCEAFC2014A2FBCCF929.taxon	description	mulleti, Perna – Leymerie, 1841: 340, 342, nomen nudum; 1842: 8 - 9, 26, pl. 11, figs 1 - 3, ex Deshayes ms. — Type localities: Soulaines-Dhuys, Vendeuvre-sur-Barse. — Type age: Cretaceous (Hauterivian). — Type species (M) of Mulletia P. Fischer, 1886 (Nevesskaja et al. 2013: 169, fig. 49 - 4). — Current status: Mulletia mulleti (Leymerie, 1842).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF4FCCEBFC0315CDFA2CFBD9.taxon	description	Trichite – Deshayes, 1832 - EncyMeth: 1044. Vernacular, later made available as Trichites Voltz, 1833.	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF4FCCEBFC0315CDFA2CFBD9.taxon	description	● sulcifera, Pinna – Leymerie, 1841: 342, nomen nudum; 1842: 8, 26, pl. 9, fig. 9, ex Deshayes ms. — Type localities: Soulaines-Dhuys & Vendeuvre-sur-Barse. — Type age: Cretaceous (Hauterivian).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF4FCCD6FC6010D6FCABF954.taxon	description	excavata, Ostrea – Deshayes, 1835 b: 124, pl. 21, figs 5 - 6, non Fabricius, 1779, nec Lamarck, 1819. — Type locality: Peloponnese Peninsula, Greece. — Type age: Subapennine Formation, Pliocene. — Current status: taxon inquirendum.	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF4FCCD6FC6010D6FCABF954.taxon	description	incerta, Ostrea – Deshayes, 1832 - EncyMeth: 294; 1861 - DescrCoqFoss: 104, as synonym of Ostrea cucullaris Lamarck, 1819. — Type locality: none given. — Type age: not stated., which has been reported from the Paleocene to the Eocene. — Current status: synonym of Crassostrea cucullaris (Lamarck, 1819). italica, Ostrea – Deshayes, 1832 - EncyMeth: 305 - 306, non Defrance, 1821. — Type locality: Italy. — Type age: Pliocene. Oddly, although from the same age and locality, Deshayes made no reference to the species of Defrance. — Current status: taxon inquirendum.	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF4FCCD6FC6010D6FCABF954.taxon	description	lingulata, Ostrea – Deshayes, 1832 - DescrCoqFoss: 347, 26, pl. 59, figs 13 - 14; 1832 - EncyMeth: 294; 1836 - HistNatAnim 2: 250 - 251; 1843 - HistNatAnim 3: 93; 1861 - DescrCoqFoss: 104, in synonymy with Ostrea cucullaris Lamarck, 1819. — Type locality: Valmondois. — Type age: Eocene (Bartonian). — Type material: UCBL-EM 35191, syntypes. — Current status: synonym of Crassostrea cucullaris (Lamarck, 1819).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF4FCCD6FC6010D6FCABF954.taxon	description	pulchella, Ostrea – Deshayes, 1832 - EncyMeth: 299, non Defrance, 1821. — Type locality: Peru. — Type age: Recent. Described from an unknown Peruvian location, not illustrated, and based on a specimen of only 45 mm in length. The name has never been used and is a junior homonym. If type material ever came to light, it would become a synonym, wherever it belongs. — Current status: nomen dubium. radiosa, Ostrea – Deshayes, 1832 - DescrCoqFoss: 359, 26, pl. 60, figs 6 - 7; 1836 - HistNatAnim 2: 252; 1843 - HistNatAnim 3: 94; 1861 - DescrCoqFoss: 116. — Type locality: Poissy. — Type age: Eocene (Lutetian). — Current status: Cubitostrea plicata [Solander, in Brander, 1766] radiosa (Deshayes, 1832) (Le Renard & Pacaud 1995: 85). raricosta, Ostrea – Deshayes, 1832 - EncyMeth: 299. — Type locality: none given. — Type age: not stated. – Current status: nomen dubium.	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF4FCCD6FC6010D6FCABF954.taxon	description	sonora, Ostrea – Deshayes, 1832 - EncyMeth: 295; 1836 - HistNatAnim 2: 257; 1843 - HistNatAnim 3: 96, both as ex Defrance ms. — Type localities: Valognes & Ranville. — Type age: Eocene (Lutetian). — Current status: nomen dubium.	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF4FCCD6FC6010D6FCABF954.taxon	description	truncatella, Ostrea – Deshayes, 1850 - TraitElem: 33, pl. 57, figs 7 - 8. — Type locality: none given. — Type age: Mesozoic. — Type material: UCBL-EM 35253, syntype. — Current status: taxon inquirendum. uncinata, Ostrea – Deshayes, 1835 b: 126 - 127, pl. “ 28 ” [18], figs 9 - 11, non Lamarck, 1806. — Type locality: Peloponnese Peninsula, Greece. — Type age: Recent. — Current status: taxon inquirendum.	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF4FCCD6FC6010D6FCABF954.taxon	description	leymerii, Ostrea – Leymerie, 1841: 334, 335, 336, nomen nudum; 1842: 11, 28, pl. 13, fig. 4 a-b, ex Deshayes ms. — Type locality: Thieffrain (Aube). — Type age: Cretaceous (Hauterivian). — Type material: UCBL-EM 36174 B, syntype. punctata, Ostrea – Deshayes, 1858 - DescrCoqFoss: 85, pl. 83, figs 6 - 9, non Gmelin, 1791. Made available by Melleville (1843: 84 [42, 83], pl. 3, figs 5 - 8). — Type localities: Cormicy & Villers-Franqueux, “ etc. ”. — Type age: Paleocene (Thanetian). Ostrea subpunctata d’Orbigny, 1850 b (d’Orbigny 1850 b: 307, no. 194), replacement name. — Current status: Ostrea subpunctata d’Orbigny, 1850 (Deshayes, 1861 - DescrCoqFoss: 112 - 113). Glibert & Van de Poel (1965 b: 66) listed this as “ Crassostrea subpunctata (Deshayes, 1858) ”.	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF72CCD7FEC3135BFE04FB2F.taxon	description	americana, Ostrea – Deshayes, 1832 - EncyMeth: 304 - 305, non Defrance, 1821; 1836 - HistNatAnim 2: 207; 1843 - HistNatAnim 3: 78 - 79, the latter two as Gryphaea. — Type locality: Between Saint- George & Philadelphia, “ Delaware ”. — Type age: Cretaceous? Defrance’s species was a fossil from North Carolina, perhaps a synonym of Crassostrea virginica (Gmelin, 1791) [Ostrea] (D. C. Campbell, pers. comm., August 8, 2022). — Current status: most likely, Deshayes’ species was from the Cretaceous, perhaps a synonym of Pycnodonte mutabilis (S. G. Morton, 1828) [Gryphaea] (D. C. Campbell, pers. commun., August 8, 2022). arenaria, Ostrea – Deshayes, 1832 - DescrCoqFoss: 354 - 355, 28, pl. 64, figs 9 - 11; 1861 - DescrCoqFoss: 97, as a form of Gryphaea defrancii Deshayes, 1832. — Type localities: Beauchamp, Pierrelay, Pontoise & Creil. — Type age: Eocene (Bartonian). — Type material: UCBL-EM 35185, syntypes from Beauchamp. — Current status: Pycnodonte defrancii (Deshayes, 1832) (Pacaud herein).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF72CCD7FEC3135BFE04FB2F.taxon	description	uniangularis, Ostrea – Deshayes, 1832 - EncyMeth: 305. — Type locality: none given – Type age: not stated. — Current status: probably Gryphaeidae, but nomen dubium.	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF72CCD7FEC3135BFE04FB2F.taxon	description	rarilamella, Ostrea – Deshayes, 1860 - DescrCoqFoss: 85, pl. 81, figs 1 - 2, pl. 82, figs 1 - 2; 1861 - DescrCoqFoss: 109. Made available by Melleville (1843: 88 - 89 [42 - 43], unfigured). — Type locality: Laon. — Type age: Eocene (Ypresian). — Current status: Pycnodonta rarilamella (Melleville, 1843).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF73CCD1FC6B12E3FA26FBC2.taxon	description	elegantissimus, Pecten – Deshayes, 1863: 32 - 33, pl. 4, figs 11 - 12. — Type locality: La Réunion. — Type age: Recent. — Type species (OD) of Glorichlamys Dijkstra, 1991. — Current status: Glorichlamys elegantissima (Deshayes, 1863) (Raines & Poppe 2006: 116, pl. 68, figs 1 - 3, 6 - 7; Raines, in Poppe 2010: 606, pl. 994, figs 5 - 6; Huber 2010 a: 199, 624; Dijkstra & Beu 2018: 192 - 193, figs 36 G-I, 38 G, I, 39; Boutet et al. 2020: 624).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF73CCD1FC6B12E3FA26FBC2.taxon	description	imbricatus, Pecten – Deshayes, 1830 - DescrCoqFoss: 305 - 306, 22, pl. 44, figs 16 - 18, non (Gmelin, 1791) [Ostrea], nec Bosc, 1801; 1832 - EncyMeth: 730; 1836 - HistNatAnim 2: 165; 1843 - HistNatAnim 3: 63. — Type localities: Chaumont-en-Vexin & Parnes. — Type age: Eocene (Lutetian). Pecten scabriusculus Nyst, 1843 (Nyst 1843: 296), replacement name [as “ non Lamarck, 1822 ”, actually Gmelin, 1791], but non Pecten scabriusculus Matheron, 1843; Pecten subscabriusculus d’Orbigny, 1850 b (d’Orbigny 1850 b: 393), replacement name for Nyst’s replacement name; Pecten parisiensis d’Orbigny, 1850 b (d’Orbigny 1850 b: 392, no. 1094), replacement name for Deshayes’ homonym. Chlamys parisiensis (d’Orbigny, 1850) (Teppner 1922: 119, acting as “ first reviser ” of d’Orbigny’s two renamings). — Current status: all are now considered synonyms of Mimachlanys plebeia (Lamarck, 1806) [Pecten] (Pacaud herein).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF73CCD1FC6B12E3FA26FBC2.taxon	description	meridanensis, Pecten – Deshayes, 1853 b: 509. Near Mérida. — Type locality: Near Mérida, Yucatan, Mexico. — Type age: not stated. — Current status: nomen dubium.	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF73CCD1FC6B12E3FA26FBC2.taxon	description	multicarinatus, Pecten – Deshayes, 1830 - DescrCoqFoss: 307 - 308, 21, pl. 42, figs 17 - 19; 1836 - HistNatAnim 2: 166; 1843 - HistNatAnim 3: 64; 1861 - DescrCoqFoss: 79. — Type locality: Parnes. — Type age: Eocene (Lutetian). Chlamys multicarinata (Deshayes, 1830) (Teppner 1922: 114, as “ 1824 ”). — Current status: synonym of Mimachlamys plebeia (Lamarck, 1806) (Le Renard & Pacaud 1995: 84).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF73CCD1FC6B12E3FA26FBC2.taxon	description	optatus, Pecten – Deshayes, 1858 - DescrCoqFoss: 83, pl. 79, figs 18 - 20; 1861 - DescrCoqFoss: 81 - 82. — Type localities: Parnes, Les Groux, Gomerfontaine, Saint-Félix, Chaumont-en-Vexin & Morainval. — Type age: Eocene (Lutetian). — Current status: synonym of Mimachlamys plebeia (Lamarck, 1806) (Le Renard & Pacaud 1995: 84).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF73CCD1FC6B12E3FA26FBC2.taxon	description	rosaceus, Pecten – Deshayes, 1863: 31, nomen nudum and thus not preoccuping Pecten rosaceus Locard, 1888.	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF73CCD1FC6B12E3FA26FBC2.taxon	description	yucatanensis, Pecten – Deshayes, 1853 b: 509. — Type locality: Near Mérida, Yucatan, Mexico. — Type age: not stated. — Current status: nomen dubium. ●	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF73CCD1FC6B12E3FA26FBC2.taxon	description	leymerii, Hinnites – Leymerie, 1841: 342, nomen nudum; 1842: 10, 27, pl. 14, fig. 1, ex Deshayes ms. — Type localities: Flogny-la- Chapelle & Soulaines-Dhuys. — Type age: Cretaceous (Hauterivian). — Type species (SD Eberzin, 1960) of Prohinnites Gillet, 1921. — Current status: Prohinnites leymerii (Leymerie, 1842) (Nevesskaja et al. 2013: 219, fig. 76 - 5). voltzii, Pecten – Leymerie, 1841: 342, nomen nudum; 1842: 10, 27, pl. 6, fig. 11 a-c, ex Deshayes ms. — Type localities: Fouchères & Chenay. — Type age: Cretaceous (Hauterivian). — Current status: Chlamys voltzii (Leymerie, 1842) [Pecten] (Dhondt 1973: 49).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF75CCD2FC6910C0FD38FA84.taxon	description	crocatus, Spondylus – Deshayes, 1849 - DictUnivAtlas: 10, pl. 8, figs 3 - 4. — Type locality: none given. — Type age: Recent. Older name for the western Atlantic species long known as Spondylus ictericus Reeve, 1856. — Current status: Deshayes’ name turns out to be one of five earlier synonyms, the oldest of which is Spondylus tenuis Schreibers, 1793 (Huber 2010 a: 215, 628). defrancii, Hinnites – Deshayes, 1825 - DictClass 8: 201. — Type locality: none given. — Type age: not stated. Preoccupies H. defrancii Michelotti, 1847. — Current status: nomen dubium. demissus, Spondylus – Deshayes, 1858 - DescrCoqFoss: 84, pl. 80, figs 24 - 27; 1861 - DescrCoqFoss: 91 - 92. — Type locality: Cuise-la-Motte. — Type age: Eocene (Ypresian). — Current status: Spondylus demissus Deshayes, 1858 (Le Renard & Pacaud 1995: 84).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF75CCD2FC6910C0FD38FA84.taxon	description	● roemeri, Spondylus – Leymerie, 1841: 342, nomen nudum; 1842: 10 - 11, 27, pl. 6, figs 8 - 10, ex Deshayes ms. — Type localities: Fouchères & Chenay. — Type age: Cretaceous (Hauterivian). — Current status: Spondylus roemeri Leymerie, 1842 (Masse et al. 2022: 7). spinosus, Spondylus – Listed by Leymerie (1846: 136) and Arkadiev (2020: 21, 304, pl. 101, fig. 8) as a Deshayes species, this originated as Spondylus spinosus (J. Sowerby, 1814) [Plagiostoma].	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF76CCD2FF3F110EFA91FC21.taxon	description	Current status: Plicatula elegans Deshayes, 1830 (Glibert & Van de Poel 1965 b: 44; Le Renard & Pacaud 1995: 84; Pacaud 2008: 83). multiplicata, Plicatula – Deshayes, 1863: 33 - 34, pl. 5, figs 5 - 6. — Type locality: La Réunion. — Type age: Recent. — Type material: MNHN- IM- 2000 - 4069, 2 syntypes. — Current status: synonym of Plicatula australis Lamarck, 1819 (Huber 2010 a: 192, 621; Lutaenko et al. 2019: 22).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF76CCD3FC7F17A9FDE8F94F.taxon	description	● comata, Lima – Leymerie, 1841: 342, nomen nudum; 1842: 10, 26, pl. 8, fig. 7 a-b, ex Deshayes ms. — Type locality: Vendeuvre-sur-Barse. — Type age: Cretaceous (Hauterivian).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF77CCD3FCB4104AFA96FA8A.taxon	description	lajoyei, Trigonia – Leymerie, 1841: 342, nomen nudum; 1842: 7, 30, pl. 8, fig. 4 a-b, ex Deshayes ms. — Type localities: Flognyla-Chapelle & Marolles-sous-Lignières. — Type age: Cretaceous (Hauterivian). — Current status: synonym of Lycettitrigona longa (Agassiz, 1840) [Trigonia] (Cooper 2015 b: 160, 165).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF77CCD3FC6015EDFB42FC5A.taxon	description	● harpa, Trigonia – Leymerie, 1841: 342, nomen nudum; 1842: 8, 26, pl. 9, fig. 7 a-b, ex Deshayes ms. — Type localities: Magny, Marolles-sous-Lignières, Soulaines-Dhuys & Vendeuvre-sur-Barse. — Type age: Cretaceous (Hauterivian). — Current status: synonym of Trigonia carinata Agassiz, 1840 (Yanin & Bogdanova 2017: 914).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF78CCDDFF351114FA02FEC2.taxon	description	Strophites – Deshayes, 1832 - EncyMeth: 998. Incorrect subsequent spelling of Strophitus Rafinesque, 1820, now regarded as a valid genus. anceps, Unio – Deshayes in Deshayes & Jullien, 1876: 127 - 128, 160, pl. 6, figs 9 - 12. — Type locality: Mekong River, Cambodia. — Type age: Recent. — Type material: MNHN-IM- 2000 - 1636, 2 syntypes. — Current status: Scabies anceps (Deshayes in Deshayes & Jullien, 1876) (Graf & Cummings 2020).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF78CCDDFF351114FA02FEC2.taxon	description	cyreniformis, Unio – Deshayes, 1858 - TraitElem: 215. Replacement name for Unio tumidus [as tumida] J. de C. Sowerby, 1840 (explanation to pl. 47, figs 11 - 12), non Retzius, 1788. — Type locality: Decan Plateau, India. — Type age: Cretaceous. — Type material: BMNH-PIMB 953, lectotype; - 952 a-c, paralectotypes (Hartmann et al. 2008: 1245). However, this junior homonym was earlier renamed Unio subtumidus d’Orbigny, 1850 b (d’Orbigny 1850 b: 306, no. 172) and later unnecessarily renamed Unio malcolmsoni Hislop, 1860 (Hislop 1860: 174). — Current status: Parreysia subtumida (d’Orbigny, 1850). draparnaldi, Unio – Deshayes, 1831 b: 43, 262, pl. 14, fig. 6. — Type locality: Lower Brittany, small river. — Type age: Recent. Deshayes stated that he was naming this species for J. P. R. Draparnaud, so the name could be corrected to U. draparnaudi. Unnecessarily renamed Unio littoralis var. subtriangularis Drouët, 1898 (Drouët 1898: 41). — Current status: synonym of Potomida littoralis (Cuvier, 1798) [Unio] (Araujo et al. 2009: 28). draparnaudi, Unio – see previous entry. durieui, Unio – Deshayes, 1848 - Algér: pl. 109, figs 5 - 8. — Type locality: Algeria. — Type age: Recent. — Type material: lost. — Current status: Unio durieui Deshayes, “ 1847 ” (Khalloufi et al. 2011: 108 - 111, figs 5 A-D, 6 A-E). fabagina, Unio – Deshayes in Deshayes & Jullien, 1876: 128 - 129, 160, pl. 7, figs 4 - 6. — Type locality: Sombour, Mekong River, Cambodia, 10 - 15 cm. of water. — Type age: Recent. — Type material: MNHN-IM- 2000 - 1694, 1 syntype. — Type species (OD) of Unionella F. Haas, 1913, non Etheridge, 1888. Unionetta F. Haas, 1913, replacement name. — Current status: Unionetta fabagina (Deshayes in Deshayes & Jullien, 1876) (Brandt 1974: 280). fellmanni, Unio – Deshayes, 1848 - Algér: pl. 108, figs 8 - 9, pl. 109, fig. 9, pl. 110, figs 1 - 5, pl. 111, figs 1 - 6, pl. 112, figs 1 - 4, pl. 113, figs 1 - 4, pl. 114, figs 1 - 8. — Type locality: Lac Obeira, Algeria (Daget 1998: 84 - 85). — Type age: Recent. — Current status: Synonym of Potomida littoralis (Cuvier, 1798) [Unio] (Khalloufi et al. 2011: 113, as “ 1847 ”). lucasii, Anodonta – Deshayes, 1848 - Algér: pl. 108, figs 1 - 3. — Type locality: “ La Calle ” [El Kala], Algeria. — Type age: Recent. Morelet (1851: 359) redescribed the Deshayes species, and the “ holotype ” in NHMUK, 1893.2.4.1950, is the specimen used by Morelet, not the original Deshayes specimen (Johnson 1971: 87, as “ holotype ” of Deshayes). — Current status: synonym of Anodonta cygnea (Linnaeus, 1758) [Mytilus] (Daget 1998: 19; Graf & Cummings 2020). michaudi, Unio – Deshayes, 1858 - DescrCoqFoss: 62, pl. 62, figs 1 - 5; 1860 - DescrCoqFoss: 802 - 803. — Type locality: Cuis. — Type age: Eocene (Ypresian). — Type species (OD) of Propotomida Modell, 1964. — Current status: Palindonaia michaudi (Deshayes, 1858) (Le Renard & Pacaud 1995: 80), now Propotomida michaudi (Deshayes, 1858). moreleti, Unio – Deshayes, 1848 - Algér: pl. 109, figs 1 - 4, pl. 112, fig. 5. — Type locality: Algeria. — Type age: Recent. — Type material: lost. — Type species (SD Graf, 2010) of Moreletiana Locard, 1889, which is now regarded as a synonym of Unio. — Current status: synonym of Unio ravoisieri Deshayes, 1848 (first reviser: Daget 1998: 91, both as “ 1847 ”). purpurea, Anodonta – Deshayes, 1826 b: 61. — Type locality: Nile River. — Type age: Recent. Not to be confused with Anodonta purpurea Valenciennes, 1827, type species of Simpsonella Cockerell, 1903. Valenciennes’ name could perhaps be maintained under ICZN Code Art. 23.9.1, or the next available name, Simpsonella burroughiana I. Lea, 1834, could be used. — Current status: synonym of Mutela dubia (Gmelin, 1791) [Mytilus] (Graf & Cummings 2020).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF78CCDDFF351114FA02FEC2.taxon	description	sempervivens, Anodonta – Deshayes in Deshayes & Jullien, 1876: 120 - 123, 159, pl. 5, figs 4 - 5. — Type locality: Arroyo de Peam-Chelang, Cambodia; common. — Type age: Recent. — Type material: MNHN-IM- 2000 - 1781, 4 syntypes. — Current status: synonym of Pilsbryoconcha exilis (I. Lea, 1838) [Anodonta] (Graf & Cummings 2020), or of Pilsbryoconcha carinifera (Conrad, 1837) (Jeratthikul et al. 2022: 7, figs 3 e- 4, 4).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF78CCDDFF351114FA02FEC2.taxon	description	Purpurine – Blainville, 1826: 249, ex Deshayes ms. A vernacular, later latinized as Purpurina Herrmannsen, 1852, non d’Orbigny, 1850 [Gastropoda]. Herrmannsen’s genus, the type species (M) of which is Anodonta purpurea Valenciennes, 1827, is an objective synonym of Simpsonella Cockerell, 1903.	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF79CCDAFC6F15CDFD58F940.taxon	description	elegans, Corbis – Deshayes, 1839 - TraitElem: 10, pl. 15, figs 7 - 9; 1844 - RegAnim: pl. 102, fig. 1, 1 a; 1850 - TraitElem: 803 - 804. — Type locality: Philippines. — Type age: Recent. — Current status: possible senior synonym of Fimbria soverbii (Reeve, 1842) [Corbis] (Huber 2015: chapter 5 on CD, with Deshayes species dated from the 1844 fig. and listed as a junior synonym); while pl. expl. p. 10 appeared in 1839, it is not certain when pl. 15 was issued, but it would be reasonable to think it appeared at the same time as its explanation. emendata, Lucina – Deshayes, 1857 - DescrCoqFoss: 40, pl. 40, figs 25 - 27; 1858 - DescrCoqFoss: 653. — Type localities: Thiverval-Grignon, Beynes & Parnes. — Type age: Eocene (Lutetian). — Current status: synonym of Codakia (Epilucina) concentrica (Lamarck, 1806) [Lucina] (Glibert & Van de Poel 1967: 24). evanida, Lucina – Deshayes, 1857 - DescrCoqFoss: 41, pl. 41, figs 10 - 13. — Type locality: none given, presumably Paris Basin. — Type age: probably Eocene. — Current status: taxon inquirendum.	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF79CCDAFC6F15CDFD58F940.taxon	description	mayeri, Lucina – Deshayes, 1857 - DescrCoqFoss: 45, pl. 45, figs 4 - 6; 1858 - DescrCoqFoss: 677 - 678. — Type locality: Auvers-sur-Oise. — Type age: Eocene (Bartonian). — Current status: Parvilucina (? Parvilucina) mayeri (Deshayes, 1857) (Le Renard & Pacaud 1995: 76).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF79CCDAFC6F15CDFD58F940.taxon	description	argus, Lucina – Deshayes, 1858 - DescrCoqFoss: 637 - 638, 39, pl. 39, figs 5 - 6. Made available by Melleville (1843: 80 [33 - 34, 85], pl. 6, figs 1 - 2, 2 bis). — Type locality: Laon. — Type age: Eocene (Ypresian). — Current status: Pseudomiltha argus (Melleville, 1843). cordiformis, Venus – Leymerie, 1841: 341, nomen nudum; 1842: 5, 25, pl. 5, figs 8 a-b, ex Deshayes ms. — Type localities: Vendeuvre-sur-Barse & Marolles-sous-Lignières. — Type age: Cretaceous (Hauterivian). — Type species (M) of Palaeocorbis Conrad, 1869, which has been regarded as a synonym of Sphaera J. Sowerby, 1822.	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF79CCDAFC6F15CDFD58F940.taxon	description	lupinus, Lucina – Strickland, in Hamilton & Strickland, 1847: 110, ex Deshayes ms, nomen nudum, in synonymy of Lucina spinifera (Montagu, 1803) [Venus]. mitis, Lucina – J. de C. Sowerby, 1829: 107, pl. 557, fig. 1, ex Deshayes ms. — Type locality: Barton Cliff, Hampshire, England. — Type age: Late Eocene.	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF7ECCDAFC7214A2FC4CFD1E.taxon	description	heberti, Cardinia – Deshayes, 1858 - TraitElem: 231. — Type locality: Manche. — Type age: Jurassic. — Current status: nomen dubium.	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF7ECCC5FC781777FBD9FBCE.taxon	description	californica, Cardita – Deshayes, 1854 a: 100. — Type locality: Gulf of California, Mexico; Cuming coll. — Type age: Recent. — Type material: NHMUK 1963768, 3 syntypes. — Current status: synonym of Carditamera affinis (G. B. Sowerby I, 1833) [Cardita] (Coan & Valentich-Scott 2012: 377 - 378). castanea, Cardita – Deshayes, 1854 a: 102, pl. 17, fig. 11. — Type locality: Australia; Cuming coll. — Type age: Recent. — Type material: NHMUK 1963769, 3 syntypes. — Current status: synonym of Cardites rufus (Deshayes, 1834) (Huber 2010 a: 252, 654). caumontiensis, Cardita – Deshayes, 1858 - DescrCoqFoss: 61, pl. 61, figs 6 - 8; 1860 - DescrCoqFoss: 774 - 775. — Type localities: Caumont & Vendrest. — Type age: Eocene (Bartonian). — Current status: Cyclocardia (Cyclocardia?) caumontiensis (Deshayes, 1858) (Le Renard & Pacaud 1995: 79).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF7ECCC5FC781777FBD9FBCE.taxon	description	cumingii, Cardita – Deshayes, 1854 a: 102, pl. 17, fig. 15. — Type locality: Borneo; Cuming coll. — Type age: Recent. — Type material: NHMUK unnumbered, 3 syntypes. — Current status: Cardites cumingii (Deshayes, 1854) (Huber 2010 a: 251, 655).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF7ECCC5FC781777FBD9FBCE.taxon	description	excavata, Cardita – Deshayes, 1854 a: 100, pl. 17, figs 1 - 3. — Type locality: Sydney, Australia; Cuming coll. — Type age: Recent. — Type material: NHMUK 1963699, 2 syntypes. — Current status: synonym of Cardita aviculina Lamarck, 1822 (Huber 2010 a: 249, 653). gervillii, Cardita – Deshayes, 1857 - TraitElem: 169. — Type locality: Orglande. — Type age: Cretaceous (Maastrichtian). — Current status: nomen dubium. gunnii, Cardita – Deshayes, 1854 a: 101. — Type locality: Van Diemen’s Land [Tasmania], Australia; Cuming coll. — Type age: Recent. — Type material: NHMUK 1963695, probable holotype. — Current status: Centrocardita gunnii (Deshayes, 1854) (Huber 2010 a: 657, with some doubt as to the type locality). imperfecta, Cardita; see above: divergens, Cardita.	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF7ECCC5FC781777FBD9FBCE.taxon	description	trigoniaeformis, Cardita – Deshayes, 1857 - TraitElem: 165 - 166. Replacement name for Cardita decussata Münster, in Goldfuss, 1837 (Goldfuss 1837: 185, pl. 133, fig. 5), non (Lamarck, 1805) [Venericardia]. — Type locality: Saint-Cassain, Italy; Triassic (Norian). — Current status: taxon inquirendum.	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF7ECCC5FC781777FBD9FBCE.taxon	description	semiorbiculata, Cardita – Deshayes, 1843 - RegAnim: pl. 93, fig. 4. This was listed by Sherborn (1930: 5863), as C. “ semi-orbiculata ” Deshayes, but it was merely indicating a transfer of Chama semiorbiculata Linnaeus, 1758, to Cardita. — Current status: Beguina semiorbiculata (Linnaeus, 1758).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF61CCC7FC5210CCFE93FC54.taxon	description	lamarkii, Crassatella – Deshayes, 1857 - TraitElem: 113, non Nyst, 1847. — Type locality: Australia. — Type age: Recent. Deshayes’ species name should be automatically corrected to C. lamarckii because it was proposed in connection with Lamarck’s species (ICZN Code Art. 32.5), whose name he spelled correctly, the misspelling clearly being a typographical error. However, the rest of the nomenclatural situation is complex. Deshayes said that he was proposing this name for living material from Australia that had been referred to as Crassatella sulcata Lamarck, 1805. (Crassatella sulcata Lamarck, 1801, was a nomen nudum.) While Lamarck’s name was a junior secondary homonym (non Solander, in Brander, 1766 – Tellina), it was originally based on Paris Basin fossil material. Lamarck (1805) had mentioned material from Australia, considering it to be an “ analogue ” of his fossil material. The name by Deshayes, is itself a junior homonym. Later, Lamarck (1818: 481 - 482) applied his fossil name to Recent specimens from Australia, but this does not create a homonym; it is just a misapplication of his fossil species name. — Type locality: Australia. — Type age: Recent. — Current status: Deshayes’ taxon is thus a junior synonym of the Australian Eucrassatella decipiens (Reeve, 1842) [Crassatella]. minor, Crassatella plumbea [“ Chemnitz ”] – Deshayes, 1860 - DescrCoqFoss: 737. — Type localities: Soissons & Laon. — Type age: Eocene (Ypresian). (1824 - DescrCoqFoss: 33, “ Var. B. Testá minore ”). The first available name for the underlying, separable “ Chemnitz ” fossil species is Crassatella ponderosa (Gmelin, 1791) [Venus]. — Current status: Crassatella (Crassatella) minor Deshayes, 1860 (Glibert & Van de Poel 1970: 91; Le Renard & Pacaud 1995: 79). nystii, Crassatella – Deshayes, 1857 - TraitElem: 114. Based on what Nyst (1845 a: 86 - 87, pl. 2, fig. 4 a-b) figured as Crassatella tenuistriata Deshayes, 1824. — Type localities: Jette, Laeken & Éverlé near Louvain, Belgium. — Type age: Eocene (Bartonian). — Current status: synonym of Crassatella nystiana d’Orbigny, 1850 b (d’Orbigny 1850 b: 383, no. 906) (Pacaud 2007: 57). plicatilis, Crassatella – Deshayes, 1857 - DescrCoqFoss: 18, pl. 18, figs 26 - 27; 1860 - DescrCoqFoss: 745. — Type locality: Brasles. — Type age: Eocene (Lutetian). — Type material: MNHN. F. J 04145, syntype. — Current status: synonym of Crassatella dilatatata Deshayes, 1860 (Cossmann 1887: 83).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF61CCC7FC5210CCFE93FC54.taxon	description	bronni, Crassinella – Lozouet & Maestrati (2012 a: 254, 256, fig. 162: 9 - 12) listed this as a “ (Deshayes, 1857) ” species. However, this name seems instead to have been based on Crassinella bronnii (Nyst, 1847) [Crassatella].	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF63CCC0FF1E104CFA1CFBC4.taxon	description	Woodia – Deshayes, 1858: 59, pl. 59; 1860 - DescrCoqFoss: 790 - 793. — Type species (SD Stoliczka, 1871: 280): Tellina digitaria Linnaeus, 1758. — Current status: synonym of Digitaria S. V. Wood, 1853, which has the same type species; although the latter was published in synonymy, it has been used and has thus become established (ICZN Code Art. 11.6.1). Mediterranean. Concerning this genus, see also Semper (1862). affinis, Opis – Deshayes, 1857 - TraitElem: 129. — Type locality: Nattheim, Württemberg, Germany. — Type age: Coral-rag, Jurassic (Oxfordian). — Current status: nomen dubium.	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF63CCC0FF1E104CFA1CFBC4.taxon	description	cordiformis, Astarte – Deshayes, 1830 a-EncyMeth: 80; 1831 c: [1], pl. 8; 1835 - HistNatAnim 2: 260; HistNatAnim 3: 585, both as Crassina. — Type locality: Bayeux. — Type age: Jurassic (Bajocian). — Current status: nomen dubium.	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF63CCC0FF1E104CFA1CFBC4.taxon	description	excentrica, Astarte – Deshayes, 1846 - Algér: pl. 81, figs 7 - 10. — Type locality: Algeria. — Type age: Recent. — Current status: synonym of Digitaria digitaria (Linnaeus, 1758) [Astarte] (Sabelli et al. 1990: 308).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF63CCC0FF1E104CFA1CFBC4.taxon	description	scalaris, Astarte – Deshayes, 1830 a-EncyMeth: 78; 1835 - HistNatAnim 2: 259; 1839 - HistNatAnim 3: 586, both as Crassina; 1839 - TraitElem: 14, pl. 22, figs 6 - 7; 1857 - TraitElem: 146 - 147. — Type locality: Angers. — Type age: Miocene. — Current status: Astarte (Astarte) omalii [de la Jonkaire, 1823] scalaris Deshayes, 1830 (Lauriat-Rage 1982: 25, pls. 6, 8, 9). solidula, Astarte – Deshayes, 1830 a-EncyMeth: 79. — Type locality: Touraine. — Type age: Miocene. 1835 - HistNatAnim 2: 260; 1839 - HistNatAnim 3: 585, both as Crassina. — Current status: Astarte solidula Deshayes, 1830 (Glibert & Van de Poel 1970: 78). striatula, Astarte – Deshayes, 1830 a-EncyMeth: 78 - 79; 1831 c: [1], pl. 10; 1835 - HistNatAnim 2: 259 - 260; 1839 - HistNatAnim 3: 585, both as Crassina. — Type locality: Angers. — Type age: Miocene. — Current status: Digitariopsis obliquata stratula (Deshayes, 1830) (Pacaud herein).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF63CCC0FF1E104CFA1CFBC4.taxon	description	● fittoni, Astarte – Leymerie, 1841: 336, nomen nudum; 1842: 5, 24, pl. 6, fig. 2 a-b, ex Deshayes ms. — Type localities: Chaource & Jully-sur-Sarce. — Type age: Cretaceous (Hauterivian).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF63CCC0FF1E104CFA1CFBC4.taxon	description	obliqua, Astarte – Deshayes, 1839 - TraitElem: 14, pl. 22, figs 14 - 15. — Type locality: none given. — Type age: Jurassic. This was actually Cypricardia obliqua Lamarck, 1819, the type species (SD Dall, 1903) of Crassinella Bayle, 1879, non Guppy, 1874; Neocrassina P. Fischer, 1887, replacement name (Nevesskaja et al. 2013: 289, fig. 105 - 22). oblongata, Astarte – Leymerie, 1841: 341, nomen nudum; 1842: 5, 24, pl. 6, fig. 1 a-c. — Type localities: Avalleur, Chenay & Marolles-sous-Lignières, France. — Type age: Cretaceous (Hauterivian).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF63CCC0FF1E104CFA1CFBC4.taxon	discussion	REMARK Since 1775 when rudists were illustrated for the first time, the Order Radiolitoidea had been placed with the brachiopods, corals, cephalopods or barnacles. Deshayes was among the first naturalists to determine that the group belonged in the Bivalvia. Even then, the placement in the Bivalvia “ was opposed, however, by various naturalists, who continued to class the rudists as brachiopods, corals, or cirripeds ” (Dechaseaux 1969: N 749).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF64CCC0FC7510C9FA1CFA6C.taxon	description	minor, Diceras – Deshayes, 1839 - TraitElem: 18, pl. 28, figs 7 - 8; 1857 - TraitElem: 90 - 91, pl. 28, figs 7 - 8. — Type localities: Normandie & Saint-Mihiel. — Type age: Jurassic (Oxfordian). — Current status: nomen dubium (J. M. Pons, pers. comm., January 16, 2023).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF64CCC1FC54130AFDE6FEDE.taxon	description	problematicus, Sphaerulites – Deshayes, 1835 b: 130, pl. 24, figs 27 - 28. — Type locality: Peloponnese Peninsula, Greece. — Type age: Cretaceous. — Current status: nomen dubium.	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF65CCC1FF3F15CCFEE7FCEB.taxon	description	depressa, Hippurites – Deshayes, 1832 - EncyMeth: 283. — Type locality: Near Gap. — Type age: not stated. — Current status: nomen dubium. semicostellata, Hippurites – Deshayes, 1835 b: 130, pl. 26, fig. 12. — Type locality: Peloponnese Peninsula, Greece. — Type age: Cretaceous. Nomen nudum in Virlet (1833: 161). — Current status: nomen inquirendum.	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF65CCC2FC41152DFA1CFC0C.taxon	description	corbuloides, Cypricardia – Deshayes, 1830 b-EncyMeth: 44; 1835 - HistNatAnim 2: 441; 1839 - HistNatAnim 3: 639. — Type localities: Bayeux, Saint-Vigor & Caen. — Type age: Jurassic (Bajocian). — Current status: nomen dubium.	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF65CCC2FC41152DFA1CFC0C.taxon	description	duperreyi, Cypricardia – Deshayes, 1839 d: 359; 1841: 2, pl. 27. — Type locality: “ California ”. — Type age: Recent. — Current status: synonym of the Indo-Pacific Trapezium oblongum (Linnaeus, 1758) [Chama] (Huber 2010 a: 356; 2015: chapter 5 on CD).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF65CCC2FC41152DFA1CFC0C.taxon	description	modesta, Cypricardia – Deshayes, 1863: 14 - 15, pl. 2, figs 8 - 9. — Type locality: La Réunion. — Type age: Recent. — Current status: synonym of Trapezium oblongum (Linnaeus, 1758) [Chama] (Huber 2015: chapter 5 on CD). modiolaris, Saxicava – see next entry.	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF65CCC2FC41152DFA1CFC0C.taxon	description	oblonga, Cypricardia – Deshayes, 1829 - DescrCoqFoss: 185 - 186, 16, pl. 31, figs 3 - 4, non (Linnaeus, 1758) [Chama]; 1830 b-EncyMeth: 44 - 45; 1835 - HistNatAnim 2: 440; 1839 - HistNatAnim 3: 639; 1839 - TraitElem: 16, pl. 24, figs 8 - 9. — Type localities: Chaumont-en-Vexin, Parnes & Mouchy-le-Châtel. — Type age: Eocene (Lutetian). — Current status: synonym of Straelenotrapezium brocchii (Defrance, 1828) [Venerupis] (Le Renard 1992: 2).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF65CCC2FC41152DFA1CFC0C.taxon	description	vaginoides, Saxicava – Deshayes, 1824 - DescrCoqFoss: 66, 5, pl. 9, figs 25 - 26; 1832 - EncyMeth: 928; 1835 - HistNatAnim 2: 154; 1839 - HistNatAnim 3: 553; 1858 - DescrCoqFoss: 541, as Cypricardia. — Type locality: Acy-en-Multien. — Type age: Eocene (Bartonian). — Current status: synonym of Trapezium (Neotrapezium) grignonense (Deshayes, 1824) (Le Renard & Pacaud 1995: 73) ●	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF66CCC9FC7B1076FE26FB84.taxon	description	aviculinum, Cardium – Deshayes, 1829 - DescrCoqFoss: 179 - 180, 17, pl. 35, figs 1 - 3 [in text as “ pl. 33 ”; 1837 - DescrCoqFoss: 810 [error corrected]; 1858 - DescrCoqFoss: 551. — Type locality: Thiverval-Grignon. — Type age: Eocene (Lutetian). — Type material: MNHN. F. A 85537, holotype (Brongniart coll.). Original material did not come from Thiverval-Grignon, but more likely from the Quaternary or Recent (Deshayes, 1858: 551). Listed by Hylleberg (2004: 395). – Current status: likely synonym of Fragum fragum (Linnaeus, 1758) (Pacaud herein).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF66CCC9FC7B1076FE26FB84.taxon	description	defectum, Cardium – Deshayes, 1857 - TraitElem: 47. New species based on Cardium decussatum Mantell, 1828, as figured by Münster, in Goldfuss (1837: 222, pl. 145, fig. 2). — Type locality: Koesfeld, Germany. — Type age: Cretaceous. Hylleberg (2004: 464, as “ 1853 ”). — Current status: nomen inquirendum.	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF66CCC9FC7B1076FE26FB84.taxon	description	edentulum, Cardium – Deshayes, 1838 a: 57 - 58, [i], pl. 3, figs 3 - 6, non Montagu, 1808, nec J. Fleming, 1813. — Type locality: Crimean Peninsula. — Type age: Pliocene. Cardium subedentulum d’Orbigny, 1852 (d’Orbigny 1852: 120, no. 2251), replacement name. — Type species (M) of Pteradacna Andrusov, 1907. — Current status: Didacna (Pontalmyra) edentula (Deshayes, 1838) (Glibert & Van de Poel 1970: 63). Pteradacna subedentula (d’Orbigny, 1852) (Hylleberg 2004: 484, 783; Nevesskaja et al. 1997: 90, pl. 35, figs 1 - 10; 2001: S 194; 2013: 353, fig. 127 - 4, all without noting the replacement name).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF66CCC9FC7B1076FE26FB84.taxon	description	gossei, Cardium – Deshayes, 1855 c: 330. West Indies; Cuming coll. — Type age: Recent. — Current status: synonym of Dallocardia muricata (Linnaeus, 1758) [Cardium] (Hylleberg 2004: 535, as Trachycardium).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF66CCC9FC7B1076FE26FB84.taxon	description	klodeni, Cardium – Deshayes, 1857 - TraitElem: 45, as klödeni, 48, 55, 60. Replacement name for Cardium pectinatum Klöden, 1834 (Klöden 1834: 213, 377, pl. 3, fig. 11), non Linnaeus, 1758. — Type locality: Berlin, Germany. — Type age: sandy marl, possibly a Tertiary erratic. Hylleberg (2004: 578, as klodeni and “ 1853 ”, 687, as C. kloedeni). While the two original spellings are puzzling, ICZN Code Art. 32.5.2.1 and the person honored would dictate the spelling kloedeni. — Current status: possibly Cardiidae (M. Amler, pers. comm., March 20, 2023).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF66CCC9FC7B1076FE26FB84.taxon	description	monodacna, Cardium – Deshayes, 1857 - TraitElem: 48, 68. Replacement name for Cardium intermedium (Eichwald, 1841) [Monodacna] (p. 276 - 277, pl. 40, figs 5 - 7), non Münster, in Goldfuss, 1837, nec J. de C. Sowerby, 1840. — Type locality: Caspian Sea. — Type age: Recent. Hylleberg (2004: 632, as “ 1853 ”, 567). Unnecessary replacement name that was not adopted (ICZN Code Art. 59.3). Another synonym of this species is Didacna hyrcana Adrussov, 1923, type species (OD) Hyrcania Kolesnikov, 1950, non Monterosato, 1894 [Gastropoda] (Nevesskaja et al. 2001: S 208). Eichwald’s Monodacna intermedia is also the type species (OD) of Azeridacna Sultanov, 1963, and (OD) of Chazaridacna Sultanov, 1963, both subjective synonyms of Turcmena Popov, 1956. — Current status: Turcmena intermedia (Eichwald, 1841).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF66CCC9FC7B1076FE26FB84.taxon	description	novatum, Cardium – Deshayes, 1857 - TraitElem: 47. New species based on Cardium cognatum J. Phillips, 1829, as figured by Goldfuss (1837: 220, pl. 144, fig. 1). — Type locality: Eichstädt, Germany. — Type age: Jurassic (late). Hylleberg (2004: 443, 655, as “ 1853 ”). — Current status: nomen inquirendum.	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF66CCC9FC7B1076FE26FB84.taxon	description	reeveanum, Cardium – Deshayes, 1857 - TraitElem: 46, non Dunker, 1852. Replacement name for Cardium radiatum Reeve, 1845 (pl. 18, fig. 89), non Dujardin, 1837, nec de Koninck, 1842. — Type locality: none given [Australia]. — Type age: Recent. Hylleberg (2004: 730, 733, as “ 1853 ”). Fulvia fagea Voskuil & Onverwagt, 1993, unnecessary additional replacement name. — Current status: all three are synonyms of Fulvia tenuicostata (Lamarck, 1819) [Cardium] (Huber 2015: chapter 5 on CD, by implication). scacchii, Cardium – Deshayes, 1857 - TraitElem: 70. Hylleberg (2004: 754, as “ 1853 ”). — Type locality: Podolie, Slovakia. — Type age: Miocene (Burdigalian)? A new species based on fossil material similar to Cardium subangulatum Scacchi, 1833. — Current status: nomen dubium. scobinella, Cardium – Deshayes, 1858 - DescrCoqFoss: 564 - 565. — Type localities: Thiverval-Grignon, Mouchy-le-Châtel, Parnes, Chaussy, Coincourt & Hérouval. — Type age: Eocene (Lutetian). Plagiocardium (Papillicardium) scobinula (Deshayes, 1858) (R. Janssen 1979: 101 - 102, pl. 3, fig. 53) in the Upper Oligocene. — Current status: synonym of Loxocardium sublima (d’Orbigny, 1850) [Cardium] (Hylleberg 2004: 755, 786).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF66CCC9FC7B1076FE26FB84.taxon	description	subdentatum, Cardium – Deshayes, 1838 a: 57, [i], pl. 1, figs 16 - 18. — Type locality: Crimean Peninsula. — Type age: Pliocene. — Current status: Pseudocatillus subdentatus (Deshayes, 1838) (Nevesskaja et al. 1997: 72 - 73, pl. 25, figs 1 - 8; Nevesskaja et al. 2001: S 193; Hylleberg 2004: 783).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF66CCC9FC7B1076FE26FB84.taxon	description	transversale, Cardium – Deshayes, 1855 c: 333, non F. A. Roemer, 1849. — Type locality: Alboran Island, Spain; Cuming coll. — Type age: Recent. — Type material: NHMUK 1974137.1, lectotype (Kafanov, 1997); 1974137 / 2 - 11, 10 paralectotypes. — Current status: renamed Parvicardium vroomi Aartsen, Menkhorst & Gittenberger, 1984 (Aartsen et al. 1984: 67 - 68, 128, fig. 394; Aartsen & Goud 2000: 173 - 176, figs 1 - 3, 10 - 11, 16, 19; Hylleberg 2004: 806, 834, 917).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF66CCC9FC7B1076FE26FB84.taxon	description	venustum, Cardium (Papyridea) – Deshayes, 1858 - DescrCoqFoss: 575 - 576, 55, pl. 55, figs 22 - 24, non S. V. Wood, 1853. — Type localities: Auvers-sur-Oise, Valmondois & Le Fayel. — Type age: Eocene (Bartonian). — Current status: synonym of Papyridea capsoides (Bayan, 1873) [Cardium] (Glibert & Van de Poel 1970: 61; Hylleberg 2004: 827).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF6DCCCAFEC51002FE94FD01.taxon	description	inermis, Chama imbricata – Deshayes, 1863: 16, nom. nud.; in synonymy with Chama imbricata Broderip, 1835, citing only Broderip’s original figure, without a separate description or figure [ICZN Code Art. 12] and thus unavailable. For this reason, it does not preoccupy the Panamic Chama inermis Dall, 1871 (Coan & Valentich-Scott 2012: 443). Broderip’s species was itself a junior homonym, non Lamarck, 1801, and it was renamed Chama plinthota Cox, 1927. — Current status: Broderip’s, Deshayes and Cox’s names are listed as synonyms of the Indo-Pacific Chama croceata Lamarck, 1819 (Huber 2010 a: 282; 2015: chapter 5 on CD).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF6DCCCAFEC51002FE94FD01.taxon	description	squamata, Chama – Deshayes, 1833 b: 231, “ pl. 2, figs 3 - 5 ”, nomen nudum; 1835 b: 107, pl. 22, figs 3 - 5. — Type locality: Peloponnese Peninsula, Greece. — Type age: Subapennine Formation, Pliocene; also Italy. Unnecessarily replaced as Chama subsquamata d’Orbigny, 1852 (p. 185, no. 399), for being “ non Rumphius, 1739 ”, an unavailable work. — Current status: synonym of Chama placentina Defrance, 1817 (Sacco, 1905: 70 - 70 a). substriata, Chama – Deshayes, 1830 - DescrCoqFoss: 250 - 251, 19, pl. 38, figs 1 - 3; 1835 - HistNatAnim 2: 591; 1839 - HistNatAnim 3: 685. — Type locality: Senlis. — Type age: Eocene (Bartonian). Synonym of Chama turgidula Lamarck, 1819 (Deshayes 1858 - DescrCoqFoss: 585 - 586). — Current status: synonym of Chama squamosa Solander, in Brander, 1766 (Le Renard & Pacaud 1995: 75).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF6DCCCAFEC51002FE94FD01.taxon	description	● plicatella, Chama – Deshayes, 1858 - DescrCoqFoss: 586, 58, pl. 58, figs 5 - 7. Made available by Melleville (1843: 84 - 85 [38, 82], pl. 2, figs 7, 9). — Type locality: Laon. — Type age: Eocene (Ypresian). — Current status: Chama plicatella Deshayes, 1858 (Le Renard & Pacaud 1995: 75).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF6ECCCBFC7315ADFDD0F85A.taxon	description	inaequilateralis, Sportella – Deshayes, 1858 - DescrCoqFoss: 601 - 602, 49, pl. 49, figs 39 - 41. — Type localities: Beauchamp & Auvers-sur-Oise. — Type age: Eocene (Bartonian). — Current status: synonym of Sportella (Sportella) depressa Deshayes, 1858 (Cossmann 1887: 10).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF6FCCB1FC6514A2FAF8F85A.taxon	description	Velorita – Deshayes, 1855 d: 240. Unjustified emendation of Villorita J. E. Gray, in Griffith & Pidgeon, 1834, because the original spelling was noted. The same misspelling appeared in J. E. Gray (1840: 149), there counting as an incorrect subsequent spelling.	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF6FCCB1FC6514A2FAF8F85A.taxon	description	non Deshayes, 1824. — Type localities: Nonette, Four-La-Brouque & Ébreuil, Auvergne. — Type age: Oligocene (Chattian). — Current status: Corbicula bouilleti (Deshayes, 1839) (Prime 1860: 268).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF6FCCB1FC6514A2FAF8F85A.taxon	description	dura, Cyrena – Deshayes, 1855 a: 20; 1855 d: 252. — Type locality: none given; Cuming coll. — Type age: Recent. — Current status: Polymesoda dura (Deshayes, 1855), but nomen dubium (Huber 2015: chapter 5 on CD).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF6FCCB1FC6514A2FAF8F85A.taxon	description	humerosa, Batissa – Deshayes, 1854 f: 14; 1855 d: 239. — Type locality: New Guinea; Cuming coll. — Type age: Recent. G. B. Sowerby II, 1876 a: pl. 6, fig. 18, as Cyrena. — Type material: NHMUK 1968522, holotype. — Current status: synonym of Batissa corbiculoides (Deshayes, 1854) [Cyrena] (Huber 2015: chapter 5 on CD). impressa, Cyrena – Deshayes, 1855 a: 18; 1855 d: 249. — Type localities: Java, Philippine Islands & Australia; Cuming coll. — Type age: Recent. — Type material: NHMUK 1968518, 2 syntypes from Java. — Current status: synonym of Geloina coaxans (Gmelin, 1791) [Venus] (Huber 2015: chapter 5 on CD). incerta, Cyrena – Deshayes, 1855 a: 19; 1855 d: 250 - 251. — Type locality: none given; Cuming coll. — Type age: Recent. — Type material: NHMUK 1957.6.25.5, holotype. — Current status: synonym of Geloina expansa (Mousson, 1849) [Cyrena] from the Andaman Sea (Huber 2015: 320, chapter 5 on CD).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF6FCCB1FC6514A2FAF8F85A.taxon	description	ovalina, Cyrena – Deshayes, 1857 - DescrCoqFoss: 36, as C. “ simplex ”, pl. 36, figs 16 - 18; 1858 - DescrCoqFoss: 505; 1865 - DescrCoqFoss: 666 [correction made]. — Type localities: Damery, Fleury-la-Rivière & Boursault. — Type age: Eocene (Lutetian). — Current status: synonym of Polymesoda (Pseudocyrena) cycladiformis (Deshayes, 1825) [Cyrena] (Glibert & Van de Poel 1966 b: 8).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF6FCCB1FC6514A2FAF8F85A.taxon	description	placida, Cyrena – Deshayes, 1855 a: 19 - 20; 1855 d: 252. — Type locality: none given; Cuming coll. — Type age: Recent. G. B. Sowerby II, 1877: pl. 18, fig. 106. — Type material: NHMUK 1956.12.3.17, holotype; NHMUK 1956.12.3.18, paratype; MCZ 176889, paratype (Johnson 1959: 466). — Current status: synonym of Geloina oviformis (Deshayes, 1854) (first reviser: Huber 2015: 321, chapter 5 on CD) from Australia.	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF6FCCB1FC6514A2FAF8F85A.taxon	description	psammocola, Cyrena – Deshayes, 1857 - DescrCoqFoss: 35, pl. 35, figs 4 - 6; 1858 - DescrCoqFoss: 505 - 506. — Type locality: Cuise-la-Motte. — Type age: Eocene (Ypresian). — Current status: synonym of Polymesoda (Geloina) tetragona (Deshayes, 1857) (Cossmann 1886 a: 138; Le Renard & Pacaud 1995: 73).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF6FCCB1FC6514A2FAF8F85A.taxon	description	Many of the Cyrena species by G. B. Sowerby II, 1877 a, listed among those below, were omitted by Petit (2009) in his catalogue of the species authored by the G. B. Sowerby family. Petit may have interpreted them as being Deshayes in Sowerby II. angustidens, Cyrena – Deshayes, 1857 - DescrCoqFoss: 37, pl. 37, figs 1 - 2; 1858 - DescrCoqFoss: 515. Made available by Melleville (1843: 77 - 78 [35, 82], pl. 2, figs 1 - 2). — Type locality: Châlons-sur-Vesle. — Type age: Paleocene (Thanetian). — Current status: Corbicula (Loxoptychodon) angustidens (Melleville, 1843) [Cyrena] (Glibert & Van de Poel 1966 b: 13). cardiformis, Cyrena – G. B. Sowerby II, 1876: pl. 8, fig. 27, ex Deshayes ms. — Type locality: Paita, Peru. — Type age: Recent. — Current status: synonym of Polymesoda amomala (Deshayes, 1855) [Cyrena] (Coan & Valentich-Scott 2012: 466). charpentieri, Cyrena – Deshayes, 1857 - DescrCoqFoss: 36, pl. 36, figs 7 - 8 [in text as pl. 33]; 1858 - DescrCoqFoss: 493 - 494; 1865 - DescrCoqFoss: 665 [error in pl. citation noted]. — Type localities: Hermonville, Pouillon & Damery. — Type age: Eocene (Lutetian). Deshayes listed himself as author of this species, but it was actually made available in Potiez & Michaud (1844: 191 bis- 192 bis, 73, pl. 61, figs 18 - 19, ex Arnould ms). — Current status: synonym of Polymesoda (Geloina) compressa (Deshayes, 1835) [Cyrena] (Glibert & Van de Poel 1966 b: 4. Le Renard & Pacaud 1995: 72). erosa, Cyrena – G. B. Sowerby II, 1877 a: pl. 11, fig. 46, ex Deshayes ms, non Prime, 1861. — Type locality: none given. — Type age: Recent. Counts (1991: 17, as “ 1878 ”). — Current status: taxon inquirendum.	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF6FCCB1FC6514A2FAF8F85A.taxon	description	nitens, Cyrena – G. B. Sowerby II, 1877 a: pl. 16, fig. 89, ex Deshayes ms, non Philippi, 1844, a valid Chinese Corbicula. — Type locality: none given. — Type age: Recent. — Current status: taxon inquirendum.	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF16CCBDFC4417F4FB0FF85A.taxon	description	Scintilla – Deshayes, 1856 b: 171 - 181. — Type species (SD Stoliczka, 1871): Scintilla philippiensis Deshayes, 1856. Type genus of Scintillidae Iredale & McMichael, 1962, now regarded as a synonym of Galeommatidae Grray, 1840. — Current status: valid genus.	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF16CCBDFC4417F4FB0FF85A.taxon	description	crystallina, Scintilla – Deshayes, 1856 b: 177. — Type locality: Cacagsu, Mindanao Island, Philippine Islands; Cuming coll. — Type age: Recent. — Type material: NHMUK 196777, 2 syntypes. — Current status: Scintilla crystallina Deshayes, 1856 (Huber 2015: 477).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF16CCBDFC4417F4FB0FF85A.taxon	description	forbesii, Scintilla – Deshayes, 1856 b: 179. — Type locality: Borneo; Cuming coll. — Type age: Recent. — Type material: NHMUK 196785, 4 syntypes; NHMUK 1855.12.21.9, probable syntype. — Current status: synonym of Lepirodes ambiguus (Deshayes, 1856) [Galeomma] (first reviser: E. A. Smith 1884: 106) (Lützen & Nielsen 2005: 297; Huber 2015: chapter 5 on CD).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF16CCBDFC4417F4FB0FF85A.taxon	materials_examined	Type age: Eocene (Lutetian). — Type material: MNHN. F. A 86257 (Caillat coll.), holotype. — Current status: Spaniorinus halitus (Deshayes, 1858) (Glibert & Van de Poel 1967: 56; Le Renard & Pacaud 1995: 77; Pacaud 2008: 87).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF16CCBDFC4417F4FB0FF85A.taxon	description	hydatina, Scintilla – Deshayes, 1856 b: 177. — Type locality: Baclayon, Bohol Island, Philippine Islands; Cuming coll. — Type age: Recent. — Type material: NHMUK 196776, 3 syntypes; NHMUK 1855.12.21.3, probable syntype. — Current status: Scintilla hydatina Deshayes, 1856 (Huber 2015: 474). hydrophana, Scintilla – Deshayes, 1856 b: 178. — Type locality: Zambalis, Luzon Island, Philippine Islands; Cuming coll. — Type age: Recent. — Type material: NHMUK 196780, holotype. — Current status: Scintilla hydrophana Deshayes, 1856 (Huber 2015: 474 - 475).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF16CCBDFC4417F4FB0FF85A.taxon	description	pudica, Scintilla – Deshayes, 1856 b: 178. — Type locality: Zebu Island, Philippine Islands; Cuming coll. — Type age: Recent. — Type material: NHMUK 196781, 3 syntypes. — Current status: synonym of Scintilla rosea Deshayes, 1856 (Huber 2015: 472).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF16CCBDFC4417F4FB0FF85A.taxon	description	tenuis, Scintilla – Deshayes, 1856 b: 176. — Type locality: Basay, Samar Island, Philippine Islands; Cuming coll. — Type age: Recent. — Type material: NHMUK 196771, 3 syntypes; NHMUK 1855.12.21.2, probable syntype. — Current status: synonym of Scintilla candida Deshayes, 1856 (Huber 2015: 477).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF16CCBDFC4417F4FB0FF85A.taxon	description	●	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF1ACCB8FF2714A2FDB6FAFB.taxon	description	bullula, Erycina – Deshayes, 1856 c: 182. — Type locality: Philippine Islands; Cuming coll. — Type age: Recent. — Type material: NHMUK 196794, 2 syntypes; 196795, 2 syntypes. — Current status: Kellia bullula (Deshayes, 1856) (Huber 2015: 134 - 135, 496 - 497).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF1ACCB8FF2714A2FDB6FAFB.taxon	description	lamarckii, Erycina – Deshayes, 1858 - DescrCoqFoss: 52, pl. 52, figs 30 - 32; 1865 - DescrCoqFoss: 666 [E. “ lamarckii ” was an error; should have been Erycina lamarckiana Récluz, 1844, as in text: 1860 - DescrCoqFoss: 725]. — Type locality: Valmondois. — Type age: Eocene (Bartonian). — Current status: Erycina (Erycina) lamarckiana Récluz, 1844 (Le Renard & Pacaud 1995: 78).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF1ACCB8FF2714A2FDB6FAFB.taxon	description	nitidissimum, Lepton – Deshayes, 1858 - DescrCoqFoss: 692 - 693, 49, pl. 49, figs 33 - 34, 36 - 38. — Type locality: Thiverval-Grignon. — Type age: Eocene (Lutetian). — Current status: Erycina nitidissima (Deshayes, 1858) (Glibert & Van de Poel 1967: 62 - 63; Le Renard & Pacaud 1995: 77; Pacaud 2008: 88, as “ 1857 ”).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF1ACCB8FF2714A2FDB6FAFB.taxon	description	pusiola, Erycina – Deshayes, 1858 - DescrCoqFoss: 52, pl. 52, figs 1 - 3; 1860 - DescrCoqFoss: 726. — Type locality: La Ferté-sous-Jouarre. — Type age: Eocene (Bartonian). Erycina pusiola Deshayes, 1858 (Le Renard & Pacaud 1995: 78). pustula, Erycina – Deshayes, 1863: 16 - 17, pl. 2, figs 10 - 12. — Type locality: La Réunion. — Type age: Recent. Scintillula pustula (Deshayes, 1863) (Huber 2015: 123, 484).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF1ACCB8FF2714A2FDB6FAFB.taxon	description	● borneensis, Scintilla – G. B. Sowerby II, 1862: 176, pl. 234, fig. 10, ex Deshayes ms. — Type locality: Borneo. — Type age: Recent. Probably taken from a label in the NHMUK collection, as Deshayes did not directly contribute to this monograph. Synonym of Lepirodes ambiguus (Deshayes, 1856) [Galeomma] (E. A. Smith 1884: 106; Lützen & Nielsen 2005: 297, as “ 1874 ”).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF1CCCB8FF1711E1FAB0FCC6.taxon	description	polonica, Isocardia – Deshayes, 1857 - TraitElem: 28. Replacement name for Isocardia ventricosa Pusch, 1836: 68. pl. 7, fig. 8 a-b, non J. de C. Sowerby, 1826. — Type locality: Ukraine. — Type age: Jurassic. ● praelonga, Isocardia – Leymerie, 1841: 341, nomen nudum; 1842: 6, 25, 30, pl. 7, fig. 3 a-c, ex Deshayes ms. — Type localities: Soulaines-Dhuys, Thieffrain & & Vendeuvre-sur-Barse. — Type age: early Cretaceous (Hauterivian). unioniformis, Lucina – Deshayes, 1850 - TraitElem: 787 - 788. 1857 - TraitElem: iv, pl. 14 bis, figs 7 - 9. — Type localities: Belgium, England & Oural. — Type age: Carboniferous. Originally made available as Isocardia unioniformis J. Phillips, 1836.	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF1CCCA5FC671304FD4EFA29.taxon	description	but published first by Reeve in the Conchologia Iconica before the Proceedings of the Zoological Society of London was published, Matsukuma (2001) and Petit (2007) concluded that the species of Mactra and Lutraria should be regarded as “ Deshayes, in Reeve ”, but that the species of Mesodesma and Donax should be regarded as “ Reeve, ex Deshayes ms. ” It makes no difference as to the availability, names or dates of these species. However, in each case, there were species for which the decision proved difficult – species in Reeve credited to Deshayes, but not in Deshayes’ papers; species in Deshayes papers but not covered by Reeve; descriptions greatly shortened by Reeve from those of Deshayes; or type localities differing in the two sources. For us, the issue is more fundamental: how Reeve got the Deshayes names, perhaps by seeing the specimens in the British Museum, or obtained a copy, perhaps a copy or a preprint of his PZSL manuscripts, is unclear. Deshayes’ help is not acknowledged, and it is not clear that he cooperated with Reeve’s advance publication of the names. We conclude that Reeve “ scooped ” Deshayes and should be deemed the author of all these taxa. This is the conclusion first reached by Tomlin (1924). Authors since Petit (2007) have been inconsistent in their treatment of these authorships. Here we discuss these Reeve species as well to those of Deshayes because their authorships are so entwined, listing all these taxa ensure our understanding of their authorships. The Deshayes species are listed first, followed by those we credit to Reeve. Heterocardia – Deshayes, 1855 c: 339 - 340. — Type species (SD Stoliczka, 1871): Heterocardia gibbosula Deshayes, 1855. — Current status: valid genus. albina, Mactra – Deshayes, 1832 - EncyMeth: 395. — Type localities: Senegal; also Bordeaux & Sain-Paul-lès-Dax. — Type age: Miocene. Synonym of Mactra striatella Lamarck, 1818 (J. C. Jay, 1852: 19; Reeve, 1854 a: pl. 3, species 12). The Miocene fossil at Bordeaux & Sain-Paul-lès-Dax is Barymactra bucklandi (Defrance, 1823) (Pacaud herein). — Current status: Synonym of Leptospisula nivea (Gmelin, 1791) (Huber 2010 a: 445; chapter 5 on CD).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF1CCCA5FC671304FD4EFA29.taxon	description	bullata, Mactra – Deshayes, 1855 b: 67 - 68. — Type locality: none given. — Type age: Recent. Cuming coll. — Current status: taxon inquirendum. chamata, Mactra – Deshayes, 1835 a: 321, nomen nudum.	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF1CCCA5FC671304FD4EFA29.taxon	description	cumingii, Heterocardia – Deshayes, 1855 c: 339 - 340. — Type locality: Manilla, Philippine Islands; Cuming coll. — Type age: Recent. — Current status: synonym of Heterocardia gibbosula Deshayes, 1855 (Huber 2015: chapter 5 on CD). cuvieri, Mactra – Deshayes, 1854 c: 17. See: cumingii, Mactra – Reeve, 1854, below. depressa, Mactra – Deshayes, 1824 - DescrCoqFoss: 32, 2, pl. 4, figs 11 - 14, non Spengler, 1802, nec Lamarck, 1818; 1835 - HistNatAnim 2: 108; 1839 - HistNatAnim 3: 538. — Type locality: La Chapelle-en-Serval. — Type age: Eocene (Bartonian). Mactra subdepressa d’Orbigny, 1850 b (d’Orbigny 1850 b: 421, no. 1580), replacement name. — Current status: synonym of Spisula (Austromactra) compressa (Deshayes, 1832) [Mactra] (Pacaud 2007: 62). However, this is also a junior homonym (see above), now Austromactra subdepressa (d’Orbigny, 1850). ensis, Lutraria – Deshayes, 1835 - HistNatAnim 2: 94; 1839 - HistNatAnim 3: 534. Unjustified emendation of Lutraria acinaces Quoy & Gaimard, 1835. — Type locality: New Zealand. — Type age: Recent. — Current status: Zenatia acinaces (Quoy & Gaimard, 1835), the type species (M) of Zenatia J. E. Gray, 1853. fabagella, Heterocardia – Deshayes, 1855 c: 340. — Type locality: Philippine Islands; Cuming coll. — Type age: Recent. — Type material: NHMUK 20230054, syntype. — Current status: synonym of Heterocardia gibbosula Deshayes, 1855 (Huber 2015: chapter 5 on CD). gibbosula, Heterocardia – Deshayes, 1855 c: 340. — Type locality: Manilla, Philippine Islands; Cuming coll. — Type age: Recent. — Type material: NHMUK 20230055, 3 syntypes. Not to be confused with Mactra gibbosula Reeve, 1854, which is now regarded as a synonym of Mactra quadrangularis Reeve, 1854. — Current status: Heterocardia gibbosula Deshayes, 1855 (Huber 2010 a: 452, 760). goniata, Mactra – Deshayes, 1855 b: 70, ex J. E. Gray ms. — Type locality: [Gulf of] California; Cuming coll. — Type age: Recent. — Current status: synonym of Mulinia pallida (Broderip & G. B. Sowerby I, 1829) [Mactra] (Coan & Valentich-Scott 2012: 552 - 553; Signorelli, 2019: 33).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF1CCCA5FC671304FD4EFA29.taxon	description	intermedia, Lutraria – Deshayes, 1855 b: 71 - 72. Madagascar; Cuming coll. — Type age: Recent. Preoccupies Lutraria intermedia G. B. Sowerby II, 1859 (Petit, 2009: 126), a synonym of Lutraria angustior Philippi, 1844. — Current status: Deshayes’ species is a taxon inquirendum. intuspicta, Mactra – Deshayes, 1855 b: 64. — Type locality: Manilla, Philippine Islands & China; Cuming coll. — Type age: Recent. — Type material: NHMUK unnumbered, 4 syntypes. — Current status: synonym of Mactra cygnus Gmelin, 1791 (Huber 2010 a: 440, 754 - 755).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF01CCA5FEC9130AFA09F9FA.taxon	description	Hemicyclodonta – Deshayes, 1839 - TraitElem 2 (1): 251. See above.	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF01CCA5FEC9130AFA09F9FA.taxon	description	michelini, Hemicyclonosta – Deshayes in Michelin, 1825: pl. figs 8 - 9; 1835 - HistNatAnim 2: 450; 1839 - HistNatAnim 3: 642, the latter two as Cardilia; 1839 - TraitElem 1 (2): 251, as “ Hemicyclodonta ”; 1857 - DescrCoqFoss: 296, 17, pl. 17, figs 10 - 14, as Cardilia. — Type locality: La Chapelle-en-Serval. — Type age: Eocene (Bartonian). MNHN. F. A 09474, syntype. Of this species, Deshayes (1857 - DescrCoqFoss: 296) wrote “ There are few species as interesting as this one; its rarity, joined to the strangeness of its characters, makes it one of the most valuable in the Paris basin. The first specimen which we studied belonged to M. Michelin; it was for a long time the only one known in the collections ”. — Current status: Cardilia michelini (Deshayes in Michelin, 1825) (Signorelli & Raven 2018: 6, 8, figs 5.15 - 16). michellotii, Cardilia; see next entry.	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF01CCA7FC4F12EEFA0AFDD9.taxon	description	See authorship discussion under Mactridae. Caecella is an incorrect subsequent spelling of Coecella J. E. Gray, 1853.	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF01CCA7FC4F12EEFA0AFDD9.taxon	description	angulus, Mesodesma – Reeve, 1854 b: pl. 4, fig. 22, ex Deshayes ms; Deshayes, 1855 c: 337, as M. angulum. — Type locality: Philippine Islands; Cuming coll. — Type age: Recent. — Type material: NHMUK 1968495, 3 syntypes. — Current status: Paphies angula (Reeve, 1854) (Huber 2010 a: 456).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF01CCA7FC4F12EEFA0AFDD9.taxon	description	glabrata, Mesodesma – Deshayes, 1835 - HistNatAnim 2: 133; HistNatAnim 3: 546. Deshayes credited himself with this name, but it was merely a transfer of Mactra glabrata Gmelin, 1791, non Linnaeus, 1767, to the genus Mesodesma, but lacking a reference to Gmelin. Mactra glabrata Linnaeus, 1767, is a species of Mactra. Gmelin’s species is the type (OD) of Atactodea Dall, 1859; the valid name of its type species is now Atactodea striata (Gmelin, 1791) [Mactra].	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF03CCA0FC4816C9FE7FFEC2.taxon	description	laevigata, Cyclas – Deshayes, 1824 - DictClass 5: 220, non Schumacher, 1817. — Type locality: Mont-Bernon (Epernay). — Type age: Eocene (Ypresian). 1825 - DescrCoqFoss: 116, 9, pl. 18, figs 12 - 13. 1830 b-EncyMeth: 36. 1858 - DescrCoqFoss: 525, as Pisidium. Cyclas sublaevigata d’Orbigny, 1850 b (d’Orbigny 1850 b: 304, no. 134), replacement name. — Current status: Eupera sublaevigata (d’Orbigny, 1850) (Pacaud 2007: 64). lucasii, Cyclas – Deshayes, 1846 - Algér: 156, pl. “ 76, figs 13 - 16 ”. — Type locality: Algeria. — Type age: Recent. Nomen nudum; plate never issued, and plate explanation lacks descriptive characters. minutissima, Cyclas – Deshayes, 1848 - Algér: 156, pl. “ 76, figs 1 - 4 ”. — Type locality: Algeria. — Type age: Recent. Nomen nudum; plate never issued, and plate explanation lacks descriptive characters.	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF04CCAEFECD15CDFC1BFC7D.taxon	description	Fragilia – Deshayes, 1846 - Algér: 145, pl. 68, substitute name for Diodonta; 1848 - Algér: 552 - 562, 145 - 146, pl. 68, figs 1 - 10, on pl. as Diodonta; 1850 - TraitElem: 368 - 376. — Type species (M): Tellina fragilis Linnaeus, 1758. Deshayes introduced the name Fragilia as a substitute for Diodonta Deshayes, presumably realizing that the latter was a junior homonym. However, because his plates with the caption Diodonta had not yet appeared, the two names were published simultaneously. — Current status: Both are regarded as synonyms of Gastrana Schumacher, 1817. abbreviata, Tellina – Deshayes, 1855 c: 362. — Type locality: Ceylon; Cuming coll. — Type age: Recent. — Type material: NHMUK 20150592, holotype. — Current status: synonym of Serratina resecta (Deshayes, 1855) [Tellina] (Huber et al., in Huber 2015: 181, 590). acutangula, Tellina – Deshayes, 1857 - DescrCoqFoss: 332, 25, pl. 25, fig. 18. — Type locality: Vendeuil (between La Fère & Saint-Quentin). — Type age: Eocene (Ypresian). — Current status: Tellina (Tellinella) acutangula Deshayes, 1857 (Le Renard & Pacaud 1995: 69).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF04CCAEFECD15CDFC1BFC7D.taxon	description	amoena, Tellina – Deshayes, 1855 c: 369. — Type locality: China; Cuming coll. — Type age: Recent. — Type material: NHMUK 20150587, 2 syntypes. — Current status: synonym of Tellinella tithonia (Gould, 1850) [Tellina] (Huber et al., in Huber 2015: 172, 576). attenuata, Tellina – Deshayes, 1855 c: 363. — Type locality: Port Essington, Northern Territory, Australia; Cuming coll. — Type age: Recent. — Type material: NHMUK 20150606, 1 syntype. — Current status: synonym of Exotica cygnus (Hanley, 1844) [Tellina] (Huber et al., in Huber 2015: 240 - 241, 668). australis, Tellina – Deshayes, 1855 c: 362. — Type locality: Australia; Cuming coll. — Type age: Recent. — Current status: synonym of Jitlada philippinarum (Hanley, 1844) [Tellina] (Huber et al., in Huber: 211, 623).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF04CCAEFECD15CDFC1BFC7D.taxon	description	castellanensis, Tellina – Deshayes, 1857 - DescrCoqFoss: 328. New species based on Tellina rostralina Deshayes, 1825, of Philippi, 1841 (p. 8). — Type locality: Kassel, Germany. — Type age: Oligocene (Chattian). — Current status: taxon inquirendum.	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF04CCAEFECD15CDFC1BFC7D.taxon	description	conformis, Tellina – Deshayes, 1857 - DescrCoqFoss: 344, 25, pl. 25, figs 7 - 8. — Type locality: Caumont. — Type age: Eocene (Bartonian). — Current status: synonym of Tellina (Moera) parilis Deshayes, 1857 (Cossmann 1886 a: 74).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF04CCAEFECD15CDFC1BFC7D.taxon	description	NHMUK 20150593, 1 syntype valve. — Current status: Pharaonella dialeuca (Deshayes, 1855) (Huber et al., in Huber 2015: 600).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF04CCAEFECD15CDFC1BFC7D.taxon	description	fabagella, Tellina – Deshayes, 1855 c: 355. — Type locality: Luzon, Philippine Islands; Cuming coll. — Type age: Recent. — Type material: NHMUK 20150608, 3 syntypes. — Current status: synonym of Cadella semen (Haney, 1845) [Tellina] (Huber et al., in Huber 2015: 252, chapter 5 on CD). flammula, Tellina – Deshayes, 1855 c: 367 - 368. — Type locality: none given; Cuming coll. — Type age: Recent. — Type material: NHMUK 20150585, 3 syntypes. — Current status: synonym of the Indo-Pacific Tellinella crucigera (Lamarck, 1818) [Tellina] (Huber et al., in Huber 2015: 170, 575). glabrella, Tellina – Deshayes, 1855 c: 366, non Delle Chiaje, 1830. — Type locality: New Zealand; Cuming coll. — Type age: Recent. — Type material: NHMUK unnumbered, 1 syntype pair. Listed by Petit (2009: 118) as a G. B. Sowerby, II, 1868 (pl. 50, fig. 296) species. — Current status: Bartchicoma edgari (Iredale, 1915) [p. 489; Macoma], replacement name (Huber et al., in Huber 2015: 206, 617, without mention of Deshayes’ species). grata, Tellina – Deshayes, 1855 c: 369 - 370. — Type locality: “ Amboyna ” [Ambon Island], Indonesia; Cuming coll. — Type age: Recent. — Type material: NHMUK 20150584, 1 syntype. — Current status: synonym of Tellinella tithonia (Gould, 1850) [Tellina] (Huber et al., in Huber 2015: 172, 576). gratiosa, Tellina – Deshayes, 1855 c: 369. — Type locality: Philippine Islands; Cuming coll. — Type age: Recent. — Type material: NHMUK 20150588, 3 syntypes. — Current status: synonym of Tellinella crucigera (Lamarck, 1818) [Tellina] (Huber et al., in Huber 2015: 170, 575).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF04CCAEFECD15CDFC1BFC7D.taxon	description	leda, Tellina – Deshayes, 1855 c: 364. — Type locality: Malacca; Cuming coll. — Type age: Recent. — Type material: NHMUK unnumbered, 1 syntype pair. — Current status: possibly Cadella leda (Deshayes, 1855) (Huber et al., in Huber 2015: 684). ligamentina, Tellina – Deshayes, 1843 b: 2, pl. 81. — Type locality: none given. — Type age: Recent. — Current status: synonym of the northeastern Pacific Rexithaerus secta (Conrad, 1837) [Tellina] (Coan & Valentich-Scott 2012: 608 - 609). lucida, Tellina – Deshayes, 1848 - Algér: 551 - 552, 146, pl. 69, figs 4 - 6. — Type locality: Bône [Annaba], Algeria. — Type age: Recent. — Current status: synonym of Macomangulus tenuis (da Costa, 1778) [Tellina] (Huber et al., in Huber 2015: 657). lucinalis, Tellina – Deshayes, 1825 - DescrCoqFoss: 85, 7, pl. 13, figs 7 - 8; 1832 - EncyMeth: 1020; 1835 - HistNatAnim 2: 214; 1839 - HistNatAnim 3: 571; 1857 - DescrCoqFoss: 360, as Tellina (Arcopagia). — Type locality: Valmondois. — Type age: Eocene (Bartonian). — Current status: synonym of Tellina (Sinuosipagia) subrotunda Deshayes, 1825 (Cossmann 1886 a: 83). lunula, Tellina – Deshayes, 1825 - DescrCoqFoss: 6. Error for Tellina lunulata (Lamarck, 1805) [Donax], the type species (OD) of Cyclotellina Cossmann, 1886. mazatlanica, Tellina – Deshayes, 1855 c: 359 - 360. — Type locality: Mazatlan, Mexico; Cuming coll. — Type age: Recent. — Type material: NHMUK unnumbered, 1 syntype pair. — Current status: synonym of Psammotreta pura (Gould, 1853) [Tellina] (Coan & Valentich-Scott 2012: 614; Huber et al., in Huber 2015: 720).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF04CCAEFECD15CDFC1BFC7D.taxon	description	mixta, Tellina (Arcopagia) – Deshayes, 1857 - DescrCoqFoss: 362, 27, pl. 27, figs 15 - 17. — Type localities: Jeurre, Etréchy & Morigny-Champigny. — Type age: Oligocene (Rupelian). — Type material: MNHN. F. J 04137, syntype. — Current status: synonym of Arcopagia heberti (Deshayes, 1857) (Pacaud herein).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF04CCAEFECD15CDFC1BFC7D.taxon	description	mutata, Tellina; see: elegans, Erycina, above in Tellinidae. nitens, Tellina – Deshayes, 1855 c: 358, non C. B. Adams, 1845. Ticao. — Type locality: Philippine Islands; Cuming coll. — Type age: Recent. — Type material: NHMUK 20060798, 1 syntype pair. — Current status: synonym of Nitidotellina unifasciata (G. B. Sowerby II, 1867) (Huber et al., in Huber 2015: 227, 652).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF04CCAEFECD15CDFC1BFC7D.taxon	description	ovalis, Solen – Deshayes, 1824 - DescrCoqFoss: 28 - 29, 2, pl. 2, figs 26 - 27. — Type localities: Maulette, Mouchy-le-Châtel. — Type age: Eocene (Lutetian). 1832 - EncyMeth: 963. Deshayes evidently concluded that this species was actually a Tellina and would then be a homonym, though senior, of Tellina ovalis S. Woodward, 1833. As a result, he used the replacement name Tellina pellicula in 1857, although his 1824 species should stand. — Current status: Angulus (Lamyella) ovalis (Deshayes, 1824) (see references below under peliculla, Tellina).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF04CCAEFECD15CDFC1BFC7D.taxon	description	recurva, Tellina – Deshayes, 1855 c: 361. Australia; Cuming coll. — Type age: Recent. — Current status: nomen dubium (Hedley 1913: 272; Huber 2015: chapter 5 on CD).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF04CCAEFECD15CDFC1BFC7D.taxon	description	rubra, Tellina – Deshayes, 1855 c: 364, non da Costa, 1778. — Type locality: Ceylon; Cuming coll. — Type age: Recent. — Type material: NHMUK 20150598, 4 syntypes. — Current status: synonym of Jitlada philippinarum (Hanley, 1844) [Tellina] (Huber et al., in Huber 2015: 623).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF04CCAEFECD15CDFC1BFC7D.taxon	description	sanguinolenta, Tellina – Deshayes, 1855 c: 359. — Type locality: Philippine Islands; Cuming coll. — Type age: Recent. — Current status: nomen dubium (Huber et al., in Huber 2015: 721). semiaspera, Tellina – Deshayes, 1855 c: 365. — Type locality: none given; Cuming coll. — Type age: Recent. — Type material: NHMUK 20150595, 1 syntype. — Current status: the Indo-Pacific Scutarcopagia semiaspera (Deshayes, 1855) (Huber et al., in Huber 2015: 176, 582).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF04CCAEFECD15CDFC1BFC7D.taxon	description	solenella, Tellina – Deshayes, 1855 c: 365 - 366. — Type locality: Bohol Island, Philippine Islands; Cuming coll. — Type age: Recent. — Type material: NHMUK 20150600, 4 syntypes. — Current status: synonym of Hanleyanus vestalis (Hanley, 1844) [Tellina] (Huber et al., in Huber 2015: 223 - 224, 647, 721).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF04CCAEFECD15CDFC1BFC7D.taxon	description	subtilis, Tellina – Deshayes, 1857 - DescrCoqFoss: 334, 25, pl. 25, figs 15 - 17. — Type localities: Thiverval-Grignon, Saint-Félix & Hérouval. — Type age: Eocene (Lutetian). — Current status: Tellina (Elliptotellina) tellinella [Lamarck, 1806] subtilis Deshayes, 1857 (Le Renard & Pacaud 1995: 69). suensoni, Tellina – Deshayes, 1855 c: 358, ex Mörch ms. — Type locality: Brazil; Cuming coll. — Type age: Recent. — Type material: not located. — Current status: synonym of Austromacoma constricta (Bruguière, 1792) [Solen] (Huber et al., in Huber 2015: 288, 735). sulcatina, Tellina – Deshayes, 1855 c: 368 - 369. — Type locality: “ China ” [actually northeastern Pacific]; Cuming coll. — Type age: Recent. — Type material: NHMUK 20150596, 1 syntype. — Current status: synonym of the northeastern Pacific Megangulus bodegensis (Hinds, 1845) [Tellina] (Huber et al., in Huber 2015: 613). symmetrica, Tellina (Arcopagia) – Deshayes, 1857 - DescrCoqFoss: 361, 21, pl. 21, figs 16 - 18. — Type localities: Valmondois & Auvers-sur-Oise. — Type age: Eocene (Bartonian). — Current status: synonym of Arcopagia subrotunda (Deshayes, 1825) [Tellina] (Cossmann 1886 a: 83).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF04CCAEFECD15CDFC1BFC7D.taxon	description	ticaonica, Tellina – Deshayes, 1855 c: 358. — Type locality: Ticao Island, Philippine Islands; Cuming coll. — Type age: Recent. — Type material: NHMUK 20150603, holotype. — Current status: Nitidotellina ticaonica (Deshayes, 1855) (Huber et al., in Huber 2015: 227, 653).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF04CCAEFECD15CDFC1BFC7D.taxon	description	ventricosa, Tellina – Deshayes, 1855 c: 356. — Type locality: West Africa; Cuming & Deshayes colls. — Type age: Recent. — Type material: NHMUK unnumbered, 1 syntype pair. — Current status: synonym of Rostrimacoma largillierti (Philippi, 1851) [Tellina] (Huber et al., in Huber 2015: 272, 708). venusta, Tellina – Deshayes, 1855 c: 368. — Type locality: Hawaiian Islands; Cuming coll. — Type age: Recent. — Type material: NHMUK unnumbered, 1 partly broken syntype pair. — Current status: Pharaonella venusta (Deshayes, 1855) (Huber et al., in Huber 2015: 190, 600).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF04CCAEFECD15CDFC1BFC7D.taxon	description	● angulata, Tellina or Psammobia – Leymerie, 1841: 341, nomen nudum; 1842: 3, 24, pl. 3, fig. 6 a-b, ex Deshayes ms. — Type locality: Vendeuvre-sur-Barse. — Type age: Cretaceous (Hauterivian). This is a Tellina and thus non Tellina angulata Linnaeus, 1758, nec Röding, 1798. Replacement name: Tellina carteroni d’Orbigny, 1845 (d’Orbigny 1845: 420, pl. 380, figs 1 - 2). broderipii, Tellina – P. P. Carpenter, 1857: 32 - 33, ex Deshayes ms. — Current status: synonym of Tellina (Tellinidella) purpurea Broderip & G. B. Sowerby I, 1829 (Coan & Valentich-Scott 2012: 657, 659 - 660).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF04CCAEFECD15CDFC1BFC7D.taxon	description	squammulosa, Tellina – G. B. Sowerby II, 1869: pl. 58, fig. 343, ex Deshayes ms. Australia. Attributed by Sowerby to Deshayes in the Proceedings of the Zoological Society of London, “ 1840: 160 ”, a reference that does not exist (Petit 2009: 170, who listed this as a Sowerby species). However, this species had its origin as Tellina squamulosa A. Adams, 1850, with one “ m ”. — Current status: Scutarcopagia squamulosa (A. Adams, 1850) (Huber 2015: chapter 5 on CD).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF0ACCA8FC69106AFA0CFE73.taxon	description	corbuloides, Donax – Deshayes, 1830 b-EncyMeth: 99 - 100; 1835 - HistNatAnim 2: 250; HistNatAnim 3: 582. — Type locality: none given. — Type age: Recent. — Current status: taxon inquirendum (Huber 2015: chapter 5 on CD).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF0ACCA8FC69106AFA0CFE73.taxon	description	lamarckii, Donax – Deshayes, 1857 - DescrCoqFoss: 24, pl. 24, figs 15 - 17, non Donax lamarckii Reeve, 1854, ex Deshayes ms; 1858 - DescrCoqFoss: 394. Donax parisiensis, replacement name (see below). lanceolata, Donax – Deshayes, 1857 - DescrCoqFoss: 24, pl. 24, figs 18 - 20; 1858 - DescrCoqFoss: 398 - 399. — Type localities: Thiverval-Grignon, Houdan, Boursault, Fleury-la-Rivière, Beauval & Crouy. — Type age: Eocene (Lutetian-Bartonian). — Current status: synonym of Donax (Latona) incompletus Lamarck, 1806 (Pezant 1908: 228). Donax (Latona) lanceolatus Deshayes, 1857 (Glibert & Van de Poel 1967: 78).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF0ACCA8FC69106AFA0CFE73.taxon	description	In the case of the following species, see the authorship discussion under Mactridae. This was also discussed by Tomlin (1931). acuminata, Donax – Reeve, 1854 d: pl. 8, fig. 58, ex Deshayes ms; Deshayes, 1855 c: 352. — Type locality: none given; Cuming coll. — Type age: Recent. — Current status: taxon inquirendum.	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF0ACCA8FC69106AFA0CFE73.taxon	description	bella, Donax – Reeve, 1854 d: pl. 6, fig. 41, ex Deshayes ms; Deshayes, 1855 c: 351. — Type locality: “ Acapulco ”, Mexico; Cuming coll. — Type age: Recent. — Current status: synonym of the western Atlantic Donax variabilis Say, 1822, based on a mislocalized specimen (Coan & Valentich-Scott 2012: 665; Huber 2015: chapter 5 on CD).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF0ACCA8FC69106AFA0CFE73.taxon	description	ventricosa, Iphigenia – S. P. Woodward, 1854: 314, ex Deshayes ms, with minimal description [“ … is rayed like Galatea, and has its beaks eroded ”]. — Type locality: none given. — Type age: Recent. G. B. Sowerby II (1868 b: pl. 5, fig. 10), in synonymy with Galatea delessertii Bernardi, 1860; now Iphigenia delessertii (Bernardi, 1860). H. Adams & A. Adams (1856: 407) miscredited this species to “ Phil. ” [Philippi]. — Current status: if the Woodward (1854) name is considered available and synonymous, then ICZN Code Art. 23.9 might be invoked to conserve Bernardi’s (1860) taxon.	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF0CCC94FC5E1582FB2AF85A.taxon	discussion	REMARK	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF0CCC94FC5E1582FB2AF85A.taxon	description	amoena, Psammobia – Deshayes, 1855 c: 323. — Type locality: none given; Cuming coll. — Type age: Recent. — Type material: NHMUK 1964010, holotype. — Current status: synonym of the Asian Gari amethystus (W. Wood, 1815) [Solen] (Willan 1993: 38 - 39, fig. 152 – holotype).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF0CCC94FC5E1582FB2AF85A.taxon	description	grata, Psammobia – Deshayes, 1855 c: 318 - 319. — Type locality: “ Amboina ”; Cuming coll. — Type age: Recent. — Type material: NHMUK 1984283, holotype. — Current status: synonym of the northeastern Atlantic Gari (Gobraeus) depressa (Pennant, 1777) [Tellina] (Willan 1993: 49).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF0CCC94FC5E1582FB2AF85A.taxon	description	oblonga, Psammobia – Deshayes, 1855 c: 321. — Type locality: none given; Cuming coll. — Type age: Recent. — Type material: NHMUK 1984295, holotype. — Current status: synonym of the Red Sea Soletellina rosea (Gmelin, 1791) [Solen] (Huber 2010 a: 331, 695), now Hiatula rosea (Gmelin, 1791).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF0CCC94FC5E1582FB2AF85A.taxon	description	1984299 / 2, paralectotype. Synonym of Gari maculosa (Lamarck, 1818) [Psammobia] (Willan 1993: 26, fig. 101 – lectotype).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF0CCC94FC5E1582FB2AF85A.taxon	description	Psammotella – H. Adams & A. Adams, 1856 (Adams & Adams 1856: 393), ex Deshayes ms, non Herrmannsen, 1852. — Type species (M): Solen ruber Schroter, 1788. — Current status: synonym of Hiatula Modeer, 1793.	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF0CCC94FC5E1582FB2AF85A.taxon	discussion	REMARK Deshayes apparently added manuscript names on labels in Cuming’s material of this family, but he never published the species involved. Reeve then credited Deshayes with the following ms names, although Reeve must be considered their author. These Reeve species are listed here along with one other species credited as “ ex Deshayes ms ”.	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF31CC96FF2C14A2FED9FBAE.taxon	description	NOTE	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF31CC96FF2C14A2FED9FBAE.taxon	description	elegans, Syndosmya – Deshayes, 1857 - DescrCoqFoss: 303, 16 bis, pl. 16 bis, figs 4 - 6. — Type locality: Jeurre. — Type age: Oligocene (Rupelian). — Type material: MNHN. F. J 04135, syntype. — Current status: Abra elegans (Deshayes, 1857) (Lozouet & Maestrati 2012 a: 262 - 263, fig. 167: 1 - 4).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF31CC96FF2C14A2FED9FBAE.taxon	description	obscura, Amphidesma – Deshayes, 1863: 9 - 10, pl. 1, figs 16 - 17. — Type locality: La Réunion. — Type age: Recent. — Current status: synonym of Semele australis (G. B. Sowerby I, 1833) [Amphidesma] (Huber 2010 a: 340, 697 - 698).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF31CC96FF2C14A2FED9FBAE.taxon	description	pellicula, Syndosmya – Deshayes, 1857 - DescrCoqFoss: 307 - 308, 16, pl. 16, figs 20 - 23. — Type locality: Jeurre. — Type age: Oligocene (Rupelian). — Current status: synonym of Abra donacina (Deshayes, 1857) [Syndosmya] (Pacaud herein).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF32CC90FC5615CDFD81F85A.taxon	description	gibbosula, Cycladicama – This was figured by Poppe (2011: 158, pl. 1074, figs 3 - 4) as “ Deshayes, 1854 ”. The genus Cycladicama Valenciennes, 1854, is regarded as a nomen dubium in the Ungulinidae, and species previously placed in it are now allocated to Joannisiella Dall, 1895. However, there is no such species name in this genus and perhaps Joannisiella philippinarum (Deshayes, 1855) [Cyrenella] was intended, or perhaps Cyrenella oblonga Deshayes, 1855, a synonym of Joannisiella oblonga (Hanley, 1846) [Cyrenoidea].	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF34CC99FC6F14A2FD5FF85A.taxon	description	Gemma – Deshayes, 1853 a: 112 - 113. — Type species (T): Venus gemma Totten, 1834. Northwestern Atlantic; Recent. Totteniana Perkins, 1869, and Tottenia Perkins, 1870, unnecessary replacement names to avoid tautonomy. Preoccupies Gemma Hazay, 1885 [Oxychilidae], and Gemma Wagner, 1907 [Helicinidae] – Current status: valid type genus of Gemminae Dall, 1895, a subfamily name in current use.	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF34CC99FC6F14A2FD5FF85A.taxon	description	aequilatera, Cytherea – Deshayes, 1839 d: 358; 1840: 2, pl. 22, as “ Lamarck ”, but there is no such taxon. 1853 a: 50. — Type locality: San Blas, Mexico. — Type age: Recent. — Current status: synonym of Tivela argentina (G. B. Sowerby I, 1835) [Cytherea] (Coan & Valentich-Scott 2012: 829 - 830).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF34CC99FC6F14A2FD5FF85A.taxon	description	albida, Circe – Deshayes, 1853 a: 84. — Type locality: Australia. — Type age: Recent. — Type material: NHMUK uncatalogued, 3 syntypes. — Current status: synonym of Circe scripta (Linnaeus, 1758) [Venus] (Huber 2015: chapter 5 on CD]. altior, Dosinia – Deshayes, 1853 a: 25. — Type locality: none given; Cuming coll. — Type age: Recent. — Type material: NHMUK 1966582, holotype. — Current status: the western Pacific Dosinia altior Deshayes, 1853 (Qi 2004: 301, pl. 164, fig. B).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF34CC99FC6F14A2FD5FF85A.taxon	description	castrensis, Pullastra – Deshayes, 1846 - Algér: pl. 86, figs 1 - 7. — Type locality: Algeria. — Type age: Recent. 1853 a: 176, as Tapes. — Current status: synonym of Polititapes aurea (Gmelin, 1791) [Venus] (Bucquoy et al. 1893: 414 - 430, pl. 63, figs 1 - 15, pl. 64, figs 1 - 13).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF34CC99FC6F14A2FD5FF85A.taxon	description	cordieri, Petricola – Deshayes, 1839 d: 358; 1840: 4 [covering three species], pl. 18. — Type locality: California; Mr. Cordier. — Type age: Recent. — Type material: NHMUK 1966561, 3 syntypes. — Current status: synonym of Irusella lamellifera (Conrad, 1837) [Venus] (Coan et al. 2000: 370, 372).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF34CC99FC6F14A2FD5FF85A.taxon	materials_examined	Type age: Eocene (Ypresian). — Current status: Tivelina dixoni [Deshayes, 1857] humerosa (Deshayes, 1857) (Glibert & Van de Poel 1966 b: 67; Le Renard & Pacaud 1995: 72). imbricata, Cytherea – Deshayes, 1858 - DescrCoqFoss: 437, 59, pl. 59, figs 30 - 32. — Type locality: La Ferté-sous-Jouarre. — Type age: Eocene (Bartonian). — Current status: synonym of Cytherea (Callista) heberti Deshayes, 1587 (Cossmann 1886 a: 113).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF34CC99FC6F14A2FD5FF85A.taxon	description	inflata, Tapes – Deshayes, 1853 a: 162; 1854 b: 8, pl. 19, fig. 3. — Type locality: Ceylon; Cuming coll. — Type age: Recent. The type species of Acritopaphia Iredale, 1936, A. transfusa Iredale, 1936, is a synonym of this species, and the genus a synonym of Paphia Röding, 1798. — Current status: Paphia inflata (Deshayes, 1854) (Huber 2010 a: 422, 742).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF34CC99FC6F14A2FD5FF85A.taxon	description	lamarckii, Cytherea – Deshayes, 1857 - DescrCoqFoss: 29, 29, pl. 29, figs 29 - 32, non Agassiz, 1845; 1858 - DescrCoqFoss: 441 - 442. — Current status: Cytherea parisiensis, replacement name (see below).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF34CC99FC6F14A2FD5FF85A.taxon	description	minor, Circe – Deshayes, 1853 a: 96. — Type locality: none given. — Type age: Recent. — Current status: nomen dubium (Huber 2015: chapter 5 on CD). minor, Dosinia – Deshayes, 1863: 12, pl. 2, figs 1 - 3. — Type locality: La Réunion. — Type age: Recent. — Current status: Dosinia minor Deshayes, 1863 (Huber 2015: chapter 5 on CD).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF34CC99FC6F14A2FD5FF85A.taxon	description	obesa, Venerupis – Deshayes, 1854 b: 5 - 6. — Type locality: Port Phillip, Victoria, Australia; Cuming coll. — Type age: Recent. G. B. Sowerby II, 1854 a: 767 - 768, pl. 164, fig. 15. NHMUK unnumbered, holotype. — Current status: synonym of Irus cumingii (Deshayes, 1854) (Huber 2010 a: 428, 749).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF34CC99FC6F14A2FD5FF85A.taxon	description	paupercula, Venerupis – Deshayes, 1854 b: 5. — Type locality: “ New Zealand ”; Cuming coll. — Type age: Recent. G. B. Sowerby II, 1854 a: 769, pl. 165, fig. 30. — Type material: NHMUK unnumbered, 3 syntype pairs. — Current status: synonym of the eastern Pacific Paphonotia elliptica (G. B. Sowerby I, 1834) [Petricola] (Coan & Valentich-Scott 2012: 783 - 785). personata, Circe – Deshayes, 1853 a: 84 - 85; 1854 b: 6. — Type locality: Australia. — Type age: Recent. — Type material: NHMUK unnumbered, 1 syntype. — Current status: synonym of Circe scripta (Linnaeus, 1758) [Venus] (Huber 2010 a: 385; 2015: chapter 5 on CD). petiti, Venerupis – Deshayes, 1839 d: 359; 1841: 2, pl. 39. — Type locality: California; Mr. Chiron. — Type age: Recent. — Current status: synonym of Leukoma staminea (Conrad, 1837) [Venus] (Coan & Valentich-Scott 2012: 778 - 779).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF34CC99FC6F14A2FD5FF85A.taxon	description	pulcherrima, Venus – Deshayes, 1860 c: 381 - 382, pl. 14, figs 1 - 2, on pl. as “ Trigonia? ”. — Type locality: none given. — Type age: Tertiary. — Type species (OD) of Radiocrista Dall, 1902. Preoccupies Venus pulcherrima K. Martin, 1883, which was renamed Chione martini Finlay, 1927. Gafrarium (Radiocrista) pulcherrima (Deshayes, 1860) (Pacaud herein).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF34CC99FC6F14A2FD5FF85A.taxon	description	radiata, Chione – Deshayes, 1853: 152, ex Chemnitz ms. — Type localities: Red Sea & China. — Type age: Recent. Synonym of Marcia cordata (Forsskål, 1775) [Venus] (Huber 2010 a: 426, 723) from the Red Sea.	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF34CC99FC6F14A2FD5FF85A.taxon	description	stampinensis, Cytherea – Deshayes, 1858 - DescrCoqFoss: 467, 59, pl. 59, figs 24 - 26. — Type locality: Jeurre. — Type age: Oligocene (Rupelian). — Type material: MNHN. F. J 04136, syntype. — Current status: synonym of Tivelina depressa (Deshayes, 1857) (Pacaud herein).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF34CC99FC6F14A2FD5FF85A.taxon	description	tuberosa, Venus – Deshayes, 1853 a: 99 - 100. — Type locality: “ New Zealand ”. — Type age: Recent. — Type material: NHMUK 20070185, 1 syntype valve. — Current status: synonym of the European Venus verrucosa Linnaeus, 1758 (Huber 2010 a: 360; 2015: chapter 5 on CD).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF34CC99FC6F14A2FD5FF85A.taxon	description	zeilanica, Venus – Deshayes, 1835 - HistNatAnim 2: 373. Misspelling of Venus zelandica Quoy & Gaimard, 1835. ●	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF3DCC9AFC53166CFEDEF9D6.taxon	description	cylindracea, Petricola – Deshayes, 1839 d: 358 - 359; 1840: pl. 20. 1853 a: 208. — Type locality: California. — Type age: Recent. — Type material: MHMUK 1966562, 2 syntypes. — Current status: synonym of Petricola carditoides (Conrad, 1837) [Saxicava] (Coan et al. 2000: 390 - 391).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF3DCC9AFC53166CFEDEF9D6.taxon	description	● divaricata, Petricola – Guérin-Méneville & Deshayes, 1868: 62, pl. 30, fig. 10, internal sketch only, as “ Deshayes ”. — Type locality: “ Indian Ocean, Australia ”. — Type age: Recent. Error for Petricola divaricata d’Orbigny, 1853, a synonym of the Caribbean P. lapacida (Gmelin, 1791) [Venus].	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF3ECC9BFED512DEFDA7FB9E.taxon	description	angulata, Sphenia – Deshayes, 1856 - DescrCoqFoss: 10, pl. 10, figs 21 - 23; 1857 - DescrCoqFoss: 197. — Type localities: Rilly-la-Montagne & Froidmont. — Type age: Eocene (Ypresian). — Current status: Sphenia angulata Deshayes, 1856 (Le Renard & Pacaud 1995: 68).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF3ECC9BFED512DEFDA7FB9E.taxon	description	tenera, Sphenia – Deshayes, 1857 - DescrCoqFoss: 191 - 192, 11, pl. 11, figs 28 - 31. — Type locality: Étréchy & Jeurre. — Type age: Oligocene (Rupelian). — Current status: Sphenia tenera Deshayes, 1857 (Lozouet & Maestrati 2012 a: 266 - 267, fig. 170: 5 - 8). terquemi, Sphenia – Deshayes, 1857 - DescrCoqFoss: 196, 11, pl. 11, figs 18 - 21. — Type locality: Rilly-la-Montagne. — Type age: Eocene (Ypresian). — Current status: Sphenia terquemi Deshayes, 1857 (Le Renard & Pacaud 1995: 68).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF3ECC9BFED512DEFDA7FB9E.taxon	description	● myacina, Sphenia – Cossmann & Peyrot (1909 a: pl. 2, figs 66 - 68; 1909 b: 164 - 165), ex Deshayes ms. A Miocene (Burdigalian) species from Dax and Léognan, with the name taken from a Deshayes label, rendered in Glibert & Van de Poel (1965 b: 36) as “ Deshayes in Cossmann & Peyrot ”.	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF3FCC84FF33100DFB88F98F.taxon	description	donacina, Corbula – Deshayes, 1830 b-EncyMeth: 9; 1844 - RegAnim: pl. 107, figs 3, 3 a-b, captioned C. labiata. — Type locality: Rio de Janeiro, Brazil. — Type age: Recent. — Current status: synonym of the South American Erodona mactroides Bosc, 1801 (Huber 2010 a: chapter 5 on CD). The on-plate caption in 1844 was Corbula labiata (Maton, 1810) [Mya], another synonym, whereas the plate explanation said Corbula donacina.	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF20CC85FC6D120FFBD2FC76.taxon	description	jouanneti, Pholas – Deshayes, 1835 - HistNatAnim 2: 47 - 48; 1839 - HistNatAnim 3: 519. — Type locality: Mérignac. — Type age: Miocene (Aquitanian). — Current status: synonym of Jouannetia semicaudata Desmoulins, 1828 (Cossmann & Peyrot 1909 a: 141 - 143, pl. 2, figs 25 - 29). ligamentina, Pholas – Deshayes, 1839 - TraitElem- 1 (2): 80 - 81, 3, pl. 3, figs 11 - 12. — Type locality: Europe. — Type age: Recent. — Current status: synonym of Barnea parva (Pennant, 1777) [Pholas] (Huber 2010 a: 473; 2015: chapter 5 on CD).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF20CC85FC6D120FFBD2FC76.taxon	description	bakeri, Pholas – S. P. Woodward, 1854: 328, 23, pl. 23, fig. 19, ex Deshayes ms. NHMUK unnumbered, lectotype. — Current status: synonym of the Asian Barnea birmanica (Philippi, 1849) [Pholas] (Tryon 1862: 194, 195, 207; Huber 2015: chapter 5 on CD). duchassaingi, Jouannetia – P. Fischer, 1862: 375 - 376, pl. 15, fig. 3, ex Deshayes ms. — Current status: this Panamic species is still recognized under the same name (Coan & Valentich-Scott 2012: 902 - 903).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF21CC86FC5B1141FBD8FEC1.taxon	description	burtini, Teredo – Deshayes, 1839 - TraitElem- 1 (2): 59, nomen nudum. See: parisiensis, Teredo.	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF21CC86FC5B1141FBD8FEC1.taxon	description	campanulata, Teredo – G. B. Sowerby II, 1875: pl. 2., fig. 9 a-c, ex Deshayes ms. Nomen dubium (Clench & Turner 1946: 27). This species name had earlier appeared in Jeffreys (1860: 127), also as ex Deshayes ms, as a nomen nudum in the synonymy of Teredo stutchburyi Blainville, 1828, ex Leach ms, which is now placed in the synonymy of Bankia carinata (J. E. Gray, 1827) [Teredo]. Both were based on a label with a now-missing lot in the NHMUK. — Current status: Turner (1966: 92 - 93) accepted Bankia campanellata Moll & Roch, 1931, which was based in part on G. B. Sowerby II’s figure, as a valid species.	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF22CC87FC6C15CFFDE6F9C4.taxon	description	similis, Saxicava – Deshayes, 1863: 9, pl. 1, figs 13 - 15. — Type locality: La Réunion. — Type age: Recent. — Current status: synonym of Hiatella arctica (Linnaeus, 1767) [Mya] (Huber 2010 a: 670). triasina, Panopea – Deshayes, 1858 - TraitElem: 370. Deshayes used the format for proposing a substitute name for Arca “ triasiana ” [sic, triasina] d’Orbigny, 1850, non Arca “ triasiana Roemer, 1849 ” [sic, triasina F. A. Roemer, 1851]. He used the same incorrect spelling for each of the two earlier names, and he misdated Roemer’s species earlier by two years. In any event, he seems to have indicated only that d’Orbigny’s species is really a Panopea and that of Roemer is a Cucullaea, so no new Deshayes name or taxon is involved. vaudini, Panopaea – Deshayes, 1857 - DescrCoqFoss: 180, 19, pl. 19, figs 1 - 3. — Type locality: Laon. — Type age: Eocene (Ypresian). — Current status: Panopea vaudini Deshayes, 1857 (Le Renard & Pacaud 1995: 67).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF22CC87FC6C15CFFDE6F9C4.taxon	description	●	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF23CC80FCA317A8FD6DFE3A.taxon	description	papyraceus, Solen – Deshayes, 1824 - DescrCoqFoss: 26 - 27, 2, pl. 2, figs 18 - 19. — Type locality: Mouchy-le-Châtel. — Type age: Eocene (Lutetian). 1832 - EncyMeth: 963. — Current status: Siliqua papyracea (Deshayes, 1824) (Le Renard & Pacaud 1995: 67; Pacaud 2008: 93). prevosti, Cultellus – see above under: brongniarti, Cultellus.	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF24CC81FF1F15A8FBA2F9A1.taxon	description	impressa, Gastrochaena – Deshayes, 1855 c: 327. — Type locality: none given; Cuming coll. — Type age: Recent. — Type material: NHMUK 1978091, 1 syntype pair & 1 valve. — Current status: possible synonym of the Philippines Islands Spenglerichaena apertissima (Deshayes, 1855) [Gastrochaena], but population-level shell morphometric and anatomical analysis needed (J. G. Carter, pers. comm., August 2020). indistincta, Gastrochaena – Deshayes, 1855 c: 328. — Type locality: Singapore; Cuming coll. — Type age: Recent. — Type material: NHMUK 1978096, 2 syntype pairs & one valve. Gastrochaena, but taxon inquirendum (J. G. Carter, pers. comm., August 2020). — Current status: synonym of Gastrochaena cuneiformis Spengler, 1783 (Lutaenko et al. 2021: 239). interrupta, Gastrochaena – Deshayes, 1855 c: 329. — Type locality: Philippine Islands; Cuming coll. — Type age: Recent. — Type material: NHMUK 1978098, 2 syntypes. — Type species (M) of Dufoichaena Jousseaume, in E. Lamy, 1925. — Current status: not synonym of Dufoichaena dentifera (Dufo, 1840) [Gastrochaena], which has much shorter, less cylindrical siphons and longer intersiphonal pallial septum (J. G. Carter, pers. comm., August 2020), thus Dufoichaena interrupta (Deshayes, 1855).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF24CC81FF1F15A8FBA2F9A1.taxon	description	dilatata, Gastrochaena – Leymerie, 1841: 341, nomen nudum; 1842: 2 - 3, 24, pl. 3, fig. 1 a-c, ex Deshayes ms. — Type localities: Chenay, Vendeuvre & Fouchères. — Type age: Cretaceous (Hauterivian). — Current status: possibly Stenochaena (J. G. Carter, pers. comm., August 2020).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF25CC82FC611214FEE4FE19.taxon	description	● Ceromya Agassiz, 1842, was non Robineau-Desvoidy, 1830 [Diptera]. Ceratomya Sandberger, 1864, originally an incorrect subsequent spelling, has been treated as an emendation and substitute name (ICZN Opinion 742, 1965). gregaria, Ceromya – Deshayes, 1857 - TraitElem: iv [third p. with this number], pl. 12 bis, figs 3 - 5. This has been listed in some works as a Deshayes species, but the name originated as Lutraria gregaria Zieten, 1833.	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF26CC82FF221597FB48F9C6.taxon	description	primigenia, Clavagella – Deshayes, 1857 - DescrCoqFoss: 94 - 95, 15, pl. 15, figs 1 - 2. — Type locality: Gannes. — Type age: Eocene (Lutetian). — Current status: Clavagella (Clavagella) primigenia Deshayes, 1857 (Le Renard & Pacaud 1995: 67). ● lata, Clavagella – Deshayes, 1839 - TraitElem- 1 (2): 25 - 26, 2, pl. 1, figs 12 - 14. Sherborn (1927: 3455) recorded this as being by Deshayes, separately from the Indo-Pacific Clavagella lata Broderip, 1834, although Deshayes noted Broderip’s publication, perhaps because Deshayes was miscredited with the species on the plate explanation. — Current status: Bryopa lata (Broderip, 1834) [Clavagella]. philippiana, Clavagella – G. B. Sowerby II, 1872 b: pl. 1, fig. 3, ex Deshayes ms. — Type locality: Mediterranean. — Type age: Recent. Petit (2009: 151). — Current status: synonym of Bryopa aperta (G. B. Sowerby I, 1823) [Clavagella].	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF27CC83FF37164EFDADFB30.taxon	description	sulciferum, Cardium – Deshayes, 1857 - TraitElem: 49, non Bayle, in Fournel, 1849. Replacement name for Cardium sulcatum (de Koninck, 1842: 109 - 110, pl. 2, fig. 19) [Cardiomorpha], non Lamarck, 1818, nec Michelotti, 1839. — Type locality: Visé, Belgium. — Type age: Silurian. Hylleberg (2004: 794, as “ 1853 ”, 793, and as not Cardiidae). Replacement name unnecessary, not used by later authors; Deshayes moved species from Paleozoic families into the Cardiidae and then lumped all species under “ Cardium ” (ICZN Code Article 59.3). — Current status: presumably still Cardiomorpha sulcata de Koninck, 1842, with Deshayes’ name a synonym.	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF27CC83FC6616CDFA09FB18.taxon	description	cuneiformis, Osteodesma – Deshayes, 1857 - TraitElem: [iv], pl. 8 bis, figs 1 - 3. — Type locality: none given. — Type age: Recent. — Current status: Entodesma cuneiformis (Deshayes, 1857), but taxon inquirendum, possibly an error for Entodesma cuneatum (J. E. Gray, 1828) [Anatina].	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF27CC83FF3211AAFACEFDD7.taxon	description	rostralis, Myadora – Deshayes, 1850 - TraitElem: 204, iv, pl. 12 bis, figs 13 - 15. — Type locality: none given. — Type age: Recent. — Type material: MNHN-IM- 2000 - 38634, holotype. — Current status: Pandora but taxon inquirendum (Huber 2010 a: 779). ●	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF27CC8CFC6F108EFDD8FE46.taxon	description	cordiformis, Pholadomya – Leymerie, 1841: 299, “ pl. 3, fig. 3 a-b ”, nomen nudum; 1842: 3, 24, pl. 3, figs 3 a-b, ex Deshayes ms. — Type locality: Saint-Parres. — Type age: Cretaceous (Hauterivian). — Current status: taxon inquirendum. solenoides, Pholadomya – Leymerie, 1841: 341, nomen nudum; 1842: 3, 24, pl. 3, figs 5 a-b, ex Deshayes ms. — Type locality: Vendeuvre. — Type age: Cretaceous (Hauterivian). — Current status: Pholadomya solenoides Leymerie, 1842 (Colleté et al. 2010: 83).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF28CC8CFF141714FB67F85A.taxon	description	suprajurensis, Thracia – Leymerie, 1846: 239, pl. 9, fig. 10, ex Deshayes ms. — Type locality: Aube Department. — Type age: Jurassic (Kimmeridgian). — Current status: synonym of Thracia incerta (F. A. Roemer, 1836, ex Thurmann ms) [Tellina] (Loriol et al. 1872 b: 203 - 206, pl. 11, figs 9 - 10).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF29CC8EFC5D1182FECEFB1E.taxon	description	magnificus, Chiton – Deshayes, 1827 - DictClass 12: 455; 1832 - EncyMeth: 680 - 681; 1836 - HistNatAnim 2: 498; 1843 - HistNatAnim 3: 183. — Type locality: Chile. — Type age: Recent. — Type material: MNHN-IM- 2000 - 6038, syntype; MNHN-IM- 2000 - 6039, 2 syntypes. — Current status: Chiton magnificus Deshayes, 1827; Valparaiso, two still-earlier names are both junior homonyms (Kaas & Van Belle 1998: 117): Chiton striatus Barnes, 1823, non G. Fischer, 1807, and Chiton latus G. B. Sowerby I, 1825, non Lowe, 1825.	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF2ACC8EFF531311FBF1FE02.taxon	description	Class SCAPHOPODA Bronn, 1862 Four species of Deshayes’ species of “ Dentalium ” are now thought to be Annelida: Dentalium abbreviatum Deshayes, 1826; D. crassum Deshayes, 1826; D. strangulatum Deshayes, 1826; and D. subulatum Deshayes, 1826. For these, see the Annelida list below.	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF2ACC88FC68158EFDF6FE4F.taxon	description	lessoni, Dentalium – Deshayes, 1826 a: 357 [37], 376 [56], pl. 16 [2], fig. 13; 1830 b-EncyMeth: 77. — Type locality: New Guinea; Mr. Lesson. — Type age: Recent. — Type material: MNHN- IM- 2000 - 38645, lectotype; MNHN-IM- 2000 - 38646, 90 paralectotypes. — Current status: the Indo-Pacific Dentalium lessoni Deshayes, 1826 (Steiner & Kabat 2004: 610).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF2ACC88FC68158EFDF6FE4F.taxon	description	inversum, Dentalium – Deshayes, 1826 a: 370 - 371 [50 - 52], 377 [57], pl. 16 [2], figs 21 - 22; 1830 b-EncyMeth: 84. — Type locality: none given. — Type age: Recent. — Type material: MNHN-IM- 2000 - 38637, 10 syntypes. — Current status: Graptacme inversa (Deshayes, 1826) (Steiner & Kabat 2004: 604), which has been allocated both to the eastern Atlantic and Panamic provinces.	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF2ACC88FC68158EFDF6FE4F.taxon	description	sectum, Dentalium – Deshayes, 1826 a: 367 - 368 [47 - 48], 378 [58], pl. 18 [4], figs 12 - 14; 1830 b-EncyMeth: 82 - 83. — Type locality: Indies. — Type age: Recent. — Type material: MNHN-IM- 2000 - 38639, 7 syntypes; MNHN-IM- 2000 - 38640, 10 syntypes. — Current status: Graptacme secta (Deshayes, 1826) (Steiner & Kabat 2004: 641).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF2CCC89FCB9150FFDE9FE78.taxon	description	Superorder AMMONOIDA Haeckel, 1866 Family names, when known, given for reference. Aptycus – Deshayes, 1845 - HistNatAnim 2: 228. Ammonoid operculum; variant spelling of Aptychus Meyer, 1831. The associated names have not yet become integrated into formal taxonomy (Arkell 1957; Moore & Sylvester-Bradley 1957: L 468). annulatus, Hamites – Deshayes, 1831 b: 228 - 229, 260, pl. 6, fig. 5. 1832 - EncyMeth: 183. — Type locality: none given, probably Caen. — Type age: Jurassic. — Current status: Spiroceras annulatum (Deshayes, 1831) (Galácz 2017: 724, figs 4 D, 5 X-Y) [Spiroceratidae Hyatt, 1900].	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF2CCC89FCB9150FFDE9FE78.taxon	description	● lyelli, Ammonites – Leymerie, 1841: 320, 322, nomen nudum; Leymerie, in d’Orbigny (1841: 255 - 257, pl. 74; 1842: 15, 32, pl. 17, fig. 16 a-b, ex Deshayes ms). — Type localities: Courcellessur-Voire, Ervy-le-Châtel & Maurepaire. — Type age: early Cretaceous (Albian). — Current status: Lyelliceras lyelli (Leymerie, in d’Orbigny, 1841) (Arkell et al. 1957: L 409 - 411) [Lyelliceratidae Spath, 1921]. Subclass NAUTILOIDEA Agassiz, 1847 Campulites – Deshayes, 1845 - HistNatAnim 2: 253 [p. misnumbered as “ 53 ”] - 254, without named species. This name had been listed as a vernacular (“ Campulite ”) in Deshayes, 1830 a-EncyMeth: 226; 1832 - EncyMeth: 606, 670. While it has been placed, with question, into synonymies (Teichert 1940: 594), unrelated groups were originally encompassed and this should remain a nomen dubium (R. T. Becker, pers. comm., November 15, 2022).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF2DCC89FF3010B4FE26F945.taxon	description	arcuatus, Nautilus – Leymerie, 1841: 320, nomen nudum; 1842: 14 - 15, 32, pl. 18, fig. 1 a-b, ex Deshayes ms. — Type locality: Racines. — Type age: Cretaceous (Albian). — Current status: Deltoidonautilus arcuatus (Leymerie, 1842).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF2DCC89FC5E14A2FAA7FCC1.taxon	description	annulosa, Orthocera – Deshayes, 1838 - RegAnim: pl. 11, fig. 5, 5 a. — Type locality: none given. — Type age: Ordovician? – Current status: taxon inquirendum. knorrii, Orthoceras – Deshayes, 1838 - RegAnim: pl. 12, fig. 1 [in pl. expl. as knorii; in plate caption as knorrii]. — Type locality: none given. — Type age: Ordovician? – Current status: taxon inquirendum. multistriata, Orthocera – Deshayes, 1838 - RegAnim: pl. 11, fig. 4, 4 a. — Type locality: none given. — Type age: Ordovician? – Current status: taxon inquirendum. semistriata, Orthocera – Deshayes, 1838 - RegAnim: pl. 11, fig. 6, 6 a. Pl. caption as O. tenuistriata. — Type locality: none given. — Type age: Ordovician? – Current status: taxon inquirendum.	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF2DCC89FC6010C8FC45F85A.taxon	description	Subclass COLEOIDEA Bather, 1888 Order BELEMNITIDA Haeckel, 1866 blainvillei, Belemnites – Deshayes, 1830 a-EncyMeth: 128,? non Voltz, 1830. — Type locality: Vieux-Pont. — Type age: Lower Oolite [Middle Jurassic]. Guérin-Méneville & Deshayes 1868: [5], pl. 2, fig. 5. Not to be confused with Sepia blainvillii Deshayes, 1835 [Belosaepiidae; see below]. milleri, Belemnites – Deshayes, 1830 a-EncyMeth: 129. — Type locality: Besançon in Jura. — Type age: not stated. — Current status: taxon inquirendum. prevosti, Belemnites – Deshayes, 1830 a-EncyMeth: 130. — Type locality: none given. — Type age: not stated. — Current status: taxon inquirendum. subula, Belemnites – Deshayes, 1830 a-EncyMeth: 130. — Type locality: none given. — Type age: not stated. — Current status: taxon inquirendum.	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF2ECC8AFECF14A2FD08FD81.taxon	description	Beloptera – Blainville, 1827 (109 - 112), ex Deshayes ms.	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF2ECC8AFECC1600FEC6F85A.taxon	description	●	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF2ECC8AFCBA108EFA03F85A.taxon	description	Dorbignyaea – Deshayes, 1830 a-EncyMeth: 231. Nomen nudum.	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF2FCC8BFF3914A2FD09FDA2.taxon	description	fortisi, Melonia – Deshayes, 1826 - DictClass 10: 352; 1828 b: 232 - 233; 1830 a-EncyMeth: 17, last two as “ fortisii ” and synonym of Alveolina oblonga d’Orbigny, 1826. — Type locality: Vandemier, Roussilon, Soissonnais & Laon. — Type age: Eocene (Ypresian). – Current status: Borelis fortisi (Deshayes, 1826) (WFD).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF2FCC8BFF16174CFD6EFB6E.taxon	description	vulgaris, Amphistegina – Deshayes, 1830 a-EncyMeth: 26, ex d’Orbigny ms. — Type localities: Bordeaux & Tau. — Type age: Miocene (Burdigalian). Nomen nudum in d’Orbigny (1826: 305). — Current status: Amphistegina vulgaris Deshayes, 1830 (WFD).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF2FCC8BFF27118EFED4F85A.taxon	description	defrancii, Siderolina – Deshayes, 1829 - DictClass 15: 416; 1832 - EncyMeth: 948. — Type locality: France; Mr. Defrance. — Type age: Recent. — Current status: Siderolina defrancii Deshayes, 1829 (WFD). raspina, Calcarina – Deshayes, 1830 a-EncyMeth: 164; 1833 a: pl. 4, figs 10 - 11 [not in table]. — Type locality: Senlis. — Type age: Eocene (Bartonian). — Current status: Calcarina raspina Deshayes, 1830 (WFD).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF2FCC8BFC211720FB7BFB4E.taxon	description	puncticulata, Globigerina – Deshayes, 1832 - EncyMeth: 170, ex d’Orbigny ms. — Type locality: Rimini, Italy. — Type age: Neogene. Nomen nudum in d’Orbigny (1826: 277). — Type material: MNHN. F. FO 470.1, lectotype; MNHN. F. FO 470.2, paralectotype. — Type species (OD) of Deshayesulus Fordham, 1986, but this genus is a nomen nudum (ICZN Code Art. 13). — Current status: Globorotalia puncticulata (Deshayes, 1832) (Lam & Leckie 2020: 202 - 203, pl. 16, figs 13 - 19, pl. 17, figs 1 - 20; pl. 18, figs 1 - 4, 7 - 8; WFD). trilocularis, Globigerina – Deshayes, 1832 - EncyMeth: 170, ex d’Orbigny ms. — Type locality: Cypli [Ciply, Belgium]. — Type age: Miocene? Nomen nudum in d’Orbigny (1826: 277). — Current status: Globigerina trilocularis Deshayes, 1832 (WFD).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFF2FCD74FC6C1141FE4DFCD5.taxon	description	angusta, Triloculina – Deshayes, 1832 - EncyMeth: 1052. — Type localities: Paris, Parnes & Mouchy-le-Châtel. — Type age: Eocene (Lutetian). Preoccupies T. angusta Philippi, 1843, and T. angusta Terquem, 1878. — Current status: Triloculina angusta Deshayes, 1832 (WFD). arcuata, Articulina – Deshayes, 1830 a-EncyMeth: 75. — Type locality: Grignon. — Type age: Eocene (Lutetian). Preoccupies A. arcuata Bogdanovich, 1967. — Current status: Articulina arcuata Deshayes, 1830 (WFD). communis, Triloculina – Deshayes, 1831 b: 259, pl. 3, figs 5 - 7. — Type locality: none given. — Type age: not stated. — Current status: Triloculina communis Deshayes, 1831 (WFD). ferussaci, Quinqueloculina – Deshayes, 1832 - EncyMeth: 875, ex d’Orbigny ms. — Type localities: Parnes, Mouchy, Saint-Félix & Grignon. — Type age: Eocene (Lutetian). Nomen nudum in d’Orbigny (1826: 301). — Current status: Articulina ferussaci (Deshayes, 1832) (WFD). inflata, Triloculina – Deshayes, 1833 a: 44 - 45 [Table], pl. 4, figs 1 - 4, non d’Orbigny, 1826. — Type locality: none given. — Type age: Eocene. — Current status: Triloculina inflata Deshayes, 1833 (WFD). If a useful taxon, the name would have to be replaced. laevigata, Quinqueloculina – Deshayes, 1831 b: 259, pl. 3, figs 3 - 4, ex d’Orbigny ms. — Type locality: none given. — Type age: not stated. Nomen nudum in d’Orbigny (1826: 301), but who indicated Paris Basin, probably Eocene. Preoccupies Quinqueloculina laevigata d’Orbigny, 1839, from the Canary Islands, which has been renamed Q. neolaevigata El-Nakhal, 1980. — Current status: Quinqueloculina laevigata Deshayes, 1831 (WFD). opposita, Biloculina – Deshayes, 1830 a-EncyMeth: 138. — Type locality: Mouchy-le-Châtel. — Type age: Eocene (Lutetian). 1831 b: 259, pl. 3, figs 8 - 10. — Current status: Biloculina opposita Deshayes, 1830 (WFD). striatula, Quinqueloculina – Deshayes, 1831 b: 259, pl. 3, figs 1 - 2; 1838 - RegAnim: pl. 14, fig. 6. — Type locality: none given. — Type age: Eocene. 1833 a: pl. 4, figs 5 - 8 [not in table], as “ Q. striata ”. — Current status: Quinqueloculina striatula Deshayes, 1831 (WFD). tricarinata, Triloculina – Deshayes, 1832 - EncyMeth: 1052, ex d’Orbigny ms. — Type locality: Red Sea. — Type age: Recent. Nomen nudum in d’Orbigny (1826: 299). — Current status: Triloculina tricarinata Deshayes, 1832 (WFD).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFED0CD74FED317EBFE2AFB0D.taxon	description	laevigata, Cristellaria – Deshayes, 1832 - EncyMeth: 31, ex d’Orbigny ms. — Type locality: Caen. — Type age: Jurassic? Nomen nudum in d’Orbigny (1826: 292). — Current status: Astacolus laevigatus (Deshayes, 1832) (WFD).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFED0CD74FC47166FFA04FC0F.taxon	description	rhomboidalis, Frondicularia – Deshayes, 1832 - EncyMeth: 146; 1838 - RegAnim: pl. 15, fig. 11, ex d’Orbigny ms. — Type locality: Adriatic Sea. — Type age: Recent. Nomen nudum in d’Orbigny (1826: 256). — Current status: synonym of Frondicularia complanata (Blainville, 1824, ex Defrance ms) [Renulina] (WFD). subovata, Frondicularia – Deshayes, 1832 - EncyMeth: 146. — Type localities: Italy & Cypi [Ciply, Belgium]. — Type age: not stated. — Current status: Frondicularia subovata Deshayes, 1832 (WFD).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFED0CD74FF261177FCD3FE6B.taxon	description	distans, Nummulites – Deshayes, 1838 a: 68, [ii], pl. 5, figs 20 - 22. — Type locality: Crimea Peninsula. — Type age: Eocene. — Type material: MNHN. F. FA 103, syntype. — Current status: Nummulites distans Deshayes, 1838 (Hadi et al., 2019: 126, fig. 8 a; WFD). gaymardi, Operculina – Deshayes, 1832 - EncyMeth: 667. — Type localities: Rawack, Australia & Guam. — Type age: Recent. Nomen nudum in d’Orbigny (1826: 281), as O. gaimardi. Spelling corrected under ICZN Code Art. 32.5 because it was obviously intended to honor Joseph Paul Gaimard. MNHN. F. FO 576, syntype. — Current status: Operculina gaimardi Deshayes, 1832 (WFD). irregularis, Nummulites – Deshayes, 1838 a: 67 - 68, [ii], pl. 5, figs 15 - 16. — Type locality: Crimea Peninsula. — Type age: not stated. — Type material: MNHN. F. FEM 556, holotype. — Current status: Nummulites irregularis Deshayes, 1838 (WFD). placentula, Nummulites – Deshayes, 1838 a: 69, [ii], pl. 6, figs 8 - 9. — Type locality: Crimea Peninsula. — Type age: Eocene. — Type material: MNHN. F. FA 260, FA 261, FA 264, FA 429, syntypes. — Current status: Assilina placentula (Deshayes, 1838) (Hadi et al., 2019: 128, fig. 8 b- 8 d; WFD). polygyratus, Nummulites – Deshayes, 1838 a: 68, [ii], pl. 5, figs 17 - 19. — Type locality: Crimea Peninsula. — Type age: not stated. — Type material: MNHN. F. FEM 624, “ type ”. — Current status: Nummulites polygyratus Deshayes, 1838 (Hadi et al. 2019: 128, fig. 8 l; WFD). rotularius, Nummulites – Deshayes, 1838 a: 68 - 69, [ii], pl. 6, figs 10 - 11. — Type locality: Crimea Peninsula. — Type age: not stated. — Current status: Nummulites rotularius Deshayes, 1838 (WFD).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFED0CD74FCB310B7FADBF9B1.taxon	description	gibba, Polymorphina – Deshayes, 1832 - EncyMeth: 807, ex d’Orbigny ms. — Type localities: Rochelle & Rimini, Adriatic. — Type age: Recent. Grignon, Dax, Bordaux, Chavagnes & Castel-Argato & Bordeaux; fossil. Nomen nudum in d’Orbigny (1826: 266). — Current status: Globulina gibba (Deshayes, 1832) (WFD).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFED1CD75FF23168FFEB3FC44.taxon	description	pygmaea, Textularia – Deshayes, 1832 - EncyMeth: 1034 [September], ex d’Orbigny ms. — Type locality: Rimini, Adriatic. — Type age: Recent. Nomen nudum in d’Orbigny (1826: 263, as T. ” pigmea ”). However, this species was first made available by Guérin-Méneville, 1832 [January].	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFED1CD76FF3E1048FCA4F85A.taxon	description	irregularis, Clavulina – Deshayes, 1830 a-EncyMeth: 242. — Type locality: Grignon. — Type age: Eocene (Lutetian). Preoccupies Clavulina irregularis Roemer, 1838, and C. irregularis Costa, 1856. — Current status: Clavulina irregularis Deshayes, 1830 (WFD). parisiensis, Clavulina – Deshayes, 1830 a-EncyMeth: 242, ex d’Orbigny ms. — Type localities: Mouchy-le-Châtel & Parnes. — Type age: Eocene (Lutetian). Nomen nudum in d’Orbigny (1826: 268). — Current status: Clavulina parisiensis Deshayes, 1830 (WFD). Phylum CNIDARIA Hatschek, 1888 Family names given for each species.	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFED1CD76FF3E1048FCA4F85A.taxon	description	Family names are given for each species.	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFED1CD76FF3E1048FCA4F85A.taxon	description	● Agassiz & Desor (1846, 1847 a, 1847 b) described a number of fossil echinoderms, including some from Algeria, which they attributed to Deshayes. Although the “ Géologie ” volume of the Exploration scientifique de l’Algérie includes a title page listing a chapter by Deshayes, this chapter was never published. One of us (Kabat) has seen (in a private collection) several hand-colored plates of fossil echinoids from Algeria, including some of these new species, evidently prepared for the Deshayes chapter. It is likely that Agassiz and Desor saw the Deshayes specimens and / or the illustrations, which they used in publishing their descriptions of the Algerian fossils first identified by Deshayes. While these names are credited to Deshayes, the brief descriptions have no indication that Deshayes was involved in their preparation. The material seems to be from collections made by Deshayes in Algeria. Although some subsequent authors (e. g., Cotteau et al. 1881: 58, 88; Lambert & Thiéry 1924: 280, 411, 501) attributed these species to Deshayes, they should be attributed solely to “ Agassiz & Desor. ”	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFED1CD76FF3E1048FCA4F85A.taxon	description	Megarima – Deshayes, 1832 - EncyMeth: 421. Incorrect subsequent spelling of Megorima Rafinesque, 1818, a genus of uncertain status.	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFED2CD76FCB814A2FADBFD9F.taxon	description	tenuiplicata, Terebratula – Deshayes, 1858 - DescrCoqFoss: 87, pl. 86, figs 13 - 15; 1861 - DescrCoqFoss: 149, as Terebratula (Terebratulina). — Type localities: Parnes & Mouchy. — Type age: Eocene (Lutetian). — Current status: Terebratulina tenuiplicata (Deshayes, 1858) (Le Renard & Pacaud 1995: 132; Pacaud 2015 a: 75).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFED2CD76FC76160FFBC7FBC4.taxon	description	abnormalis, Crania – Deshayes, 1836 - HistNatAnim 2: 304, ex Defrance ms; 1843 - HistNatAnim 3: 113. — Type localities: Bordeaux to Terre-Neigre. — Type age: Tertiary. — Current status: taxon inquirendum. ● laevigata, Orbicula – Leymerie, 1841: 336, nomen nudum; 1842: 11, 29, pl. 15, fig. 1 a-b, ex Deshayes ms, non Münster, 1840. — Type locality: Bernon. — Type age: Cretaceous (Hauterivian). This species has often been misreported in the literature (C. C. Emig, pers. commun., December 10, 2022).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
EF5DBD3EFED2CD77FC6E10CAFE5CFEE8.taxon	description	plombea, Terebratula – Deshayes, 1844 - RegAnim: pl. 134, fig. 2, 2 a-c. [in pl. expl. as plombia; in pl. caption as plumbia]. — Type locality: none given. — Type age: Recent. — Current status: probable synonym of Magellania flavescens (Lamarck, 1819) [Terebratula] (C. C. Emig, pers. comm., January 12, 2023). puncticulata, Terebratula – Deshayes, 1858 - DescrCoqFoss: 87, pl. 86, figs 5 - 9; 1861 - DescrCoqFoss: 147 - 148. — Type localities: Mouchy, Liancourt & Parnes. — Type age: Eocene (Lutetian). — Current status: Argyrotheca puncticulata (Deshayes, 1858) (Le Renard & Pacaud 1995: 132; Pacaud 2015 a: 78, pl. 3, figs 4 - 5).	en	Coan, Eugene V., Pacaud, Jean-Michel, Kabat, Alan R. (2024): Gérard-Paul Deshayes (1796 - 1875) and his taxa. Geodiversitas 46 (16): 553-930, DOI: 10.5252/geodiversitas2024v46a16, URL: https://sciencepress.mnhn.fr/sites/default/files/articles/pdf/g2024v46a16.pdf
