Montlivaltia truncata ( Defrance, 1817)

Baron-Szabo, Rosemarie Christine, Tschanz, Karl & KÜrsteiner, Peter, 2022, Scleractinian corals from the Lower Cretaceous of the Alpstein area (Anthozoa; Vitznau Marl; lower Valanginian) and a preliminary comparison with contemporaneous coral assemblages, Swiss Journal of Palaeontology (3) 141 (1), pp. 1-61 : 23

publication ID	https://doi.org/10.1186/s13358-021-00238-8
persistent identifier	https://treatment.plazi.org/id/0390879F-3847-FFB1-2E07-FEE5E2B3F85C
treatment provided by	Felipe
scientific name	Montlivaltia truncata ( Defrance, 1817)
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Treatment

Figs. 7G–J View Fig

*1817 Caryophyllia truncata : Defrance, vol. 7, p. 198. v1954 Montlivaltia truncata (Defrance) 1817 : Geyer, 1954, p. 174 [older synonyms cited therein].

(v)1977 Montlivaltia truncata Defrance, 1817 : Beauvais, in Beauvais & M’Rabet, p. 109, Pl. 1, Fig. 3a–b View Fig , Pl. 2, Fig. 2 View Fig [older synonyms cited therein].

(v)1977 Montlivaltia sioufensis nov. sp.: Beauvais, in Beauvais & M’Rabet, p. 112, Pl. 3, Fig. 1 View Fig .

(v)1994 Montlivaltia xizangensis Liao et Xia : Liao & Xia, p. 158, Pl. 43, Figs. 9 View Fig –14 and 20–23.

v2018 Montlivaltia truncata ( Defrance, 1817) : Baron-Szabo, p. 38–39, Pl. 2, Figs. I–J [older synonyms cited therein].

Dimensions. Corallite diameter at top of corallum (d x D): 12 × 18 mm (estimated); d/D = 0.67; diameter at basal part of corallum (d x D): 10 × 12 mm (estimated); d/D = 0.83; septa at top of corallum; probably 96; septa at basal part: around 40; septa/mm (peripheral area of corallite): 7–10/5; height of corallum: at least 35 mm.

Description. Incomplete solitary, turbinate, corallum; septa straight, regularly alternate in length and thickness, probably developed in 5 complete cycles in 6 systems at top of corallum; endothecal dissepiments numerous, long, mainly vesicular; membraniform epitheca sensu lato present.

Type locality of species. Upper Jurassic of France .

Distribution. Upper Jurassic of France, Germany, and Switzerland, upper Oxfordian of Azerbaijan and Georgia (in Caucasus), upper Oxfordian–lower Tithonian of Russia, Kimmeridgian of Portugal, Berriasian of central Tibet, upper Berriasian of northern Tunisia and northeastern Switzerland (upper Őhrli Formation), lower Valanginian of northeastern Switzerland (Vitznau Marl, Wart; this paper).

Material. NMSG Coll. PK–02.10.25a (= 02.10.22d).

Remarks. Because the specimen is incomplete the full range of its dimensions of skeletal elements can only be estimated. Te dimensions found in the Swiss material closely correspond to the ones of M. truncata .

Te species M. truncata was recently discussed and revised (Baron-Szabo, 2018). For further synonyms of the species M. truncata , see Paleobiology Database (paleo biodb.org).