taxonID	type	format	identifier	references	title	description	created	creator	contributor	publisher	audience	source	license	rightsHolder	datasetID
03DC25380361BF00FF7A391DB6C6394A.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/13169583/files/figure.png	https://doi.org/10.5281/zenodo.13169583	Fig. 7 Hyalogyrina depressa. a–c Reconstructions of mantle cavity, mantle roof omitted, visceral sac transparent in c; (a) right side view, (b) left side view, (c) dorsal view. d, e Histological details of foot; (d) sagittal section of dorsal mesopodial calcium cells (arrowhead: foot sole), (e) parasagittal section of lobes of anterior foot gland (arrowhead: foot sole). Labels: a = auricle, adg = anterior digestive gland, bs = blood sinus, ca = calcium cell, co = concrements of calcium cell, ct/ct’ = right/left cephalic tentacle, g = gonad, gd = gonoduct, gi = gill, h = head, k = kidney, n = nucleus, os = osphradium, pd = pedal gland duct, pdg = posterior digestive gland, pg/pg’ = right/left pallial glandular area, pgl = pedal gland lobe, pp =	Fig. 7 Hyalogyrina depressa. a–c Reconstructions of mantle cavity, mantle roof omitted, visceral sac transparent in c; (a) right side view, (b) left side view, (c) dorsal view. d, e Histological details of foot; (d) sagittal section of dorsal mesopodial calcium cells (arrowhead: foot sole), (e) parasagittal section of lobes of anterior foot gland (arrowhead: foot sole). Labels: a = auricle, adg = anterior digestive gland, bs = blood sinus, ca = calcium cell, co = concrements of calcium cell, ct/ct’ = right/left cephalic tentacle, g = gonad, gd = gonoduct, gi = gill, h = head, k = kidney, n = nucleus, os = osphradium, pd = pedal gland duct, pdg = posterior digestive gland, pg/pg’ = right/left pallial glandular area, pgl = pedal gland lobe, pp =	2011-06-19	Hess, Gerhard Haszprunar Erika Speimann Andreas Hawe Martin		Zenodo	biologists	Hess, Gerhard Haszprunar Erika Speimann Andreas Hawe Martin			
03DC25380361BF00FF7A391DB6C6394A.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/13169585/files/figure.png	https://doi.org/10.5281/zenodo.13169585	Fig. 8 Hyalogyrina depressa, histological details of mantle cavity (semithin sections). (a) Cross section of right anterior mantle cavity. (b) Cross section of left mantle roof (arrowhead: dark glandular components). (c) Cross section of median mantle roof opposed to ciliated neck. (d) Longitudinal section of gill lamellae (arrowheads: lateral cilia). (e) Cross section of left kidney with heart (arrowhead: nephropore). Labels: a = auricle of heart, ci = cilia, ct = right cephalic tentacle, gl = gill la- mellae, gls = efferent sinus of gill lamellae, hec = epidermis of head, k = kidney, mc = mantle cavity, mg1/2/3 = pallial mucous cell of type 1/2/3, pc = pericardium, pec = pallial epidermis, pt = pallial tentacle, rd = renopericardial duct	Fig. 8 Hyalogyrina depressa, histological details of mantle cavity (semithin sections). (a) Cross section of right anterior mantle cavity. (b) Cross section of left mantle roof (arrowhead: dark glandular components). (c) Cross section of median mantle roof opposed to ciliated neck. (d) Longitudinal section of gill lamellae (arrowheads: lateral cilia). (e) Cross section of left kidney with heart (arrowhead: nephropore). Labels: a = auricle of heart, ci = cilia, ct = right cephalic tentacle, gl = gill la- mellae, gls = efferent sinus of gill lamellae, hec = epidermis of head, k = kidney, mc = mantle cavity, mg1/2/3 = pallial mucous cell of type 1/2/3, pc = pericardium, pec = pallial epidermis, pt = pallial tentacle, rd = renopericardial duct	2011-06-19	Hess, Gerhard Haszprunar Erika Speimann Andreas Hawe Martin		Zenodo	biologists	Hess, Gerhard Haszprunar Erika Speimann Andreas Hawe Martin			
03DC25380361BF00FF7A391DB6C6394A.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/13169587/files/figure.png	https://doi.org/10.5281/zenodo.13169587	Fig. 11 Hyalogyrina depressa, histological details of genital system (semithin sections). (a) Overview: longitudinal section of gonoducts and associated structures, anterior is at right. (b) Detail: longitudinal section of proximal part of gonoduct. (c) Cross section of receptaculum seminis. (d) Longitudinal section of vesicula seminalis with auto- sperm. (e) Longitudinal section of bursa copulatrix with degraded allosperm. (f) Cross section of ovotestis lobes, each with inner ovary and outer testis portion. (g) Detail of f: spermatogenesis in peripheral portion of ovotestis. Labels: b = bursa, bs1/2 = blind sac1/2, dg = digestive gland, fs = allosperm, gd1/2/3 = proxi- mal/median/distal portion of gonoduct, hd = hermaphroditic duct, n/n’ = nucleus of ripe/ juvenile egg, nl = nucleolus, re = rectum, rs = receptaculum seminis, s = autosperm, sc = spermatocyte, spg = spermatogo- nium, x = degraded allosperm, yg = yolk granules	Fig. 11 Hyalogyrina depressa, histological details of genital system (semithin sections). (a) Overview: longitudinal section of gonoducts and associated structures, anterior is at right. (b) Detail: longitudinal section of proximal part of gonoduct. (c) Cross section of receptaculum seminis. (d) Longitudinal section of vesicula seminalis with auto- sperm. (e) Longitudinal section of bursa copulatrix with degraded allosperm. (f) Cross section of ovotestis lobes, each with inner ovary and outer testis portion. (g) Detail of f: spermatogenesis in peripheral portion of ovotestis. Labels: b = bursa, bs1/2 = blind sac1/2, dg = digestive gland, fs = allosperm, gd1/2/3 = proxi- mal/median/distal portion of gonoduct, hd = hermaphroditic duct, n/n’ = nucleus of ripe/ juvenile egg, nl = nucleolus, re = rectum, rs = receptaculum seminis, s = autosperm, sc = spermatocyte, spg = spermatogo- nium, x = degraded allosperm, yg = yolk granules	2011-06-19	Hess, Gerhard Haszprunar Erika Speimann Andreas Hawe Martin		Zenodo	biologists	Hess, Gerhard Haszprunar Erika Speimann Andreas Hawe Martin			
03DC25380361BF00FF7A391DB6C6394A.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/13169591/files/figure.png	https://doi.org/10.5281/zenodo.13169591	Fig. 13 Hyalogyrina depressa, nervous system and sensory organs. a, b Reconstruction of anatomy of nervous system; (a) left side view, (b) posterior view: dotted line indicates posterior part of visceral loop which could not be reconstructed (arrowhead: left zygoneurosis). c, d Histological details of sensory organs (semithin cross sections); (c) statocyst (arrowhead: statocone), (d) left cephalic tentacle and osphradium (arrowheads: tentacle nerves). Labels: B/B’ = right/left buccal ganglion, bs = blood sinus, C/C’ = right/left cerebral ganglion, CPl’ = left cerebropleural ganglion, ct’ = left cephalic tentacle, mc = mantle cavity, O = osphradial ganglion, os = osphradial epithelium,	Fig. 13 Hyalogyrina depressa, nervous system and sensory organs. a, b Reconstruction of anatomy of nervous system; (a) left side view, (b) posterior view: dotted line indicates posterior part of visceral loop which could not be reconstructed (arrowhead: left zygoneurosis). c, d Histological details of sensory organs (semithin cross sections); (c) statocyst (arrowhead: statocone), (d) left cephalic tentacle and osphradium (arrowheads: tentacle nerves). Labels: B/B’ = right/left buccal ganglion, bs = blood sinus, C/C’ = right/left cerebral ganglion, CPl’ = left cerebropleural ganglion, ct’ = left cephalic tentacle, mc = mantle cavity, O = osphradial ganglion, os = osphradial epithelium,	2011-06-19	Hess, Gerhard Haszprunar Erika Speimann Andreas Hawe Martin		Zenodo	biologists	Hess, Gerhard Haszprunar Erika Speimann Andreas Hawe Martin			
03DC25380361BF00FF7A391DB6C6394A.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/13169611/files/figure.png	https://doi.org/10.5281/zenodo.13169611	Fig. 21 Schematic comparison of the genital systems of hyalogyrinid species. (a) Hyalogyrina grasslei. (b) Hyalogyrina glabra. (c) Hyalogyrina depressa. (d) Xenoskenea pellucida. Labels: ag = albumen gland, b = bursa, bs1/2 = blind sac 1/2, cg = capsule gland, fl = flagellum, g = hermaphroditic gonad, ga = genital atrium, Gd =	Fig. 21 Schematic comparison of the genital systems of hyalogyrinid species. (a) Hyalogyrina grasslei. (b) Hyalogyrina glabra. (c) Hyalogyrina depressa. (d) Xenoskenea pellucida. Labels: ag = albumen gland, b = bursa, bs1/2 = blind sac 1/2, cg = capsule gland, fl = flagellum, g = hermaphroditic gonad, ga = genital atrium, Gd =	2011-06-19	Hess, Gerhard Haszprunar Erika Speimann Andreas Hawe Martin		Zenodo	biologists	Hess, Gerhard Haszprunar Erika Speimann Andreas Hawe Martin			
03DC25380379BF0BFF7A3D45B44A3F95.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/13169593/files/figure.png	https://doi.org/10.5281/zenodo.13169593	Fig. 14 Hyalogyrina grasslei. a, b Reconstruction of gross anatomy, body wall shown transparent; (a) left side view, cephalic tentacles and ciliary knobs in pink; (b) anterio-dorsal view. c, d Reconstruction of nervous system; (c) dorsal view, (d) posterior view. Labels: B/B’ = right/left buccal ganglion, CPl/CPl’ = right/left cerebropleural ganglion, dg = digestive gland, gd = gonoduct, gi = gill, k = kidney, ng = nephridial gland, O = osphradial ganglion, P/P’ = right/left pedal ganglion, pc = pericardium, re = rectum, rs = receptaculum seminis; Sb = suboesophageal ganglion, Sp = supraoesophageal ganglion, st/st’= right/left statocyst; 2/2’ = right/left tentacle nerves, 3/3’ = right/left pleuropedal connective, 4/4’ = right/left cerebropedal connective, 6/6’ =	Fig. 14 Hyalogyrina grasslei. a, b Reconstruction of gross anatomy, body wall shown transparent; (a) left side view, cephalic tentacles and ciliary knobs in pink; (b) anterio-dorsal view. c, d Reconstruction of nervous system; (c) dorsal view, (d) posterior view. Labels: B/B’ = right/left buccal ganglion, CPl/CPl’ = right/left cerebropleural ganglion, dg = digestive gland, gd = gonoduct, gi = gill, k = kidney, ng = nephridial gland, O = osphradial ganglion, P/P’ = right/left pedal ganglion, pc = pericardium, re = rectum, rs = receptaculum seminis; Sb = suboesophageal ganglion, Sp = supraoesophageal ganglion, st/st’= right/left statocyst; 2/2’ = right/left tentacle nerves, 3/3’ = right/left pleuropedal connective, 4/4’ = right/left cerebropedal connective, 6/6’ =	2011-06-19	Hess, Gerhard Haszprunar Erika Speimann Andreas Hawe Martin		Zenodo	biologists	Hess, Gerhard Haszprunar Erika Speimann Andreas Hawe Martin			
03DC25380379BF0BFF7A3D45B44A3F95.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/13169597/files/figure.png	https://doi.org/10.5281/zenodo.13169597	Fig. 15 Hyalogyrina grasslei, mantle cavity, histology of gill and other organs. (a) Reconstruc- tion of mantle organs in dorsal view, showing section planes. (b) Longitudinal section of gill. (c) Detail of gill lamellae. (d) Over- view of kidney and adjacent organs. (e) Detail of kidney with papilla. (f) Detail of left mantle margin with periostracal groove. (g) Metapodium with calcium cells and operculum. Labels: a = heart auricle, aks = afferent kidney sinus, ca = calcium cell, egs = efferent gill sinus, ex = external milieu, ga = gill axis, gi = gill, gl = gill lamellae, gls = sinus of gill lamellae, i = intestine, k = kidney, kp = papilla of kidney, mc = mantle cavity, n = nucleus of calcium cell, ng = nephridial gland, op = operculum, pc = pericardium, pgr = periostracal groove, re = rectum	Fig. 15 Hyalogyrina grasslei, mantle cavity, histology of gill and other organs. (a) Reconstruc- tion of mantle organs in dorsal view, showing section planes. (b) Longitudinal section of gill. (c) Detail of gill lamellae. (d) Over- view of kidney and adjacent organs. (e) Detail of kidney with papilla. (f) Detail of left mantle margin with periostracal groove. (g) Metapodium with calcium cells and operculum. Labels: a = heart auricle, aks = afferent kidney sinus, ca = calcium cell, egs = efferent gill sinus, ex = external milieu, ga = gill axis, gi = gill, gl = gill lamellae, gls = sinus of gill lamellae, i = intestine, k = kidney, kp = papilla of kidney, mc = mantle cavity, n = nucleus of calcium cell, ng = nephridial gland, op = operculum, pc = pericardium, pgr = periostracal groove, re = rectum	2011-06-19	Hess, Gerhard Haszprunar Erika Speimann Andreas Hawe Martin		Zenodo	biologists	Hess, Gerhard Haszprunar Erika Speimann Andreas Hawe Martin			
03DC25380379BF0BFF7A3D45B44A3F95.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/13169601/files/figure.png	https://doi.org/10.5281/zenodo.13169601	Fig. 16 Hyalogyrina grasslei, genital system. a Reconstruc- tion of anatomy, showing sec- tion planes. b–h Histological details (arrowhead always marks line of basal bodies of ciliated cells); (b) distal end of recep- taculum seminis and gonoduct, (c) detail of blind sac 1 and adjacent hermaphroditic gonad, (d) median part of receptaculum seminis and gonoduct, (e) prox- imal part of gonoduct with vas deferens, (f) detail of seminal groove, (g) detail of gonoduct and blind sac 2 with connecting duct (arrow), (h) detail of me- dian part of receptaculum semi- nis. Labels: bs1/2 = blind sac 1/ 2, ci = cilia, dg = digestive gland, ex = external milieu, g = gonad, gd = gonoduct, hd = hermaphroditic duct, mc = mantle cavity, re = rectum, rs = receptaculum seminis, sp = autosperm, vd = vas deferens, ve = vas efferens	Fig. 16 Hyalogyrina grasslei, genital system. a Reconstruc- tion of anatomy, showing sec- tion planes. b–h Histological details (arrowhead always marks line of basal bodies of ciliated cells); (b) distal end of recep- taculum seminis and gonoduct, (c) detail of blind sac 1 and adjacent hermaphroditic gonad, (d) median part of receptaculum seminis and gonoduct, (e) prox- imal part of gonoduct with vas deferens, (f) detail of seminal groove, (g) detail of gonoduct and blind sac 2 with connecting duct (arrow), (h) detail of me- dian part of receptaculum semi- nis. Labels: bs1/2 = blind sac 1/ 2, ci = cilia, dg = digestive gland, ex = external milieu, g = gonad, gd = gonoduct, hd = hermaphroditic duct, mc = mantle cavity, re = rectum, rs = receptaculum seminis, sp = autosperm, vd = vas deferens, ve = vas efferens	2011-06-19	Hess, Gerhard Haszprunar Erika Speimann Andreas Hawe Martin		Zenodo	biologists	Hess, Gerhard Haszprunar Erika Speimann Andreas Hawe Martin			
03DC25380379BF0BFF7A3D45B44A3F95.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/13169603/files/figure.png	https://doi.org/10.5281/zenodo.13169603	Fig. 17 Hyalogyrina grasslei, alimentary tract. a Reconstruction of anatomy, left side view, showing section planes. b–g Histological details; (b) cross section of jaws, (c) radula with buccal musculature, (d) cross section of posterior oesophagus, (e) detail of dorsal foot channel in anterior oesophagus, (f) stomach with gastric shield and tooth, (g) anal opening. Labels: a = anal opening, aoe = anterior oesophagus, csa =	Fig. 17 Hyalogyrina grasslei, alimentary tract. a Reconstruction of anatomy, left side view, showing section planes. b–g Histological details; (b) cross section of jaws, (c) radula with buccal musculature, (d) cross section of posterior oesophagus, (e) detail of dorsal foot channel in anterior oesophagus, (f) stomach with gastric shield and tooth, (g) anal opening. Labels: a = anal opening, aoe = anterior oesophagus, csa =	2011-06-19	Hess, Gerhard Haszprunar Erika Speimann Andreas Hawe Martin		Zenodo	biologists	Hess, Gerhard Haszprunar Erika Speimann Andreas Hawe Martin			
03DC25380372BF08FF7A3A60B5C13F95.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/13169607/files/figure.png	https://doi.org/10.5281/zenodo.13169607	Fig. 19 Hyalogyrina glabra, genital system. a Reconstruction of anatomy from left side (anterior is at top), showing section planes. b–e Histological details, phase contrast microscopy; (b) distal end of gonoduct, genital atrium, and receptaculum; (c) median portion of gonoduct, duct to receptaculum seminis, and flagellum; (d) detail of	Fig. 19 Hyalogyrina glabra, genital system. a Reconstruction of anatomy from left side (anterior is at top), showing section planes. b–e Histological details, phase contrast microscopy; (b) distal end of gonoduct, genital atrium, and receptaculum; (c) median portion of gonoduct, duct to receptaculum seminis, and flagellum; (d) detail of	2011-06-19	Hess, Gerhard Haszprunar Erika Speimann Andreas Hawe Martin		Zenodo	biologists	Hess, Gerhard Haszprunar Erika Speimann Andreas Hawe Martin			
03DC25380372BF08FF7A3A60B5C13F95.taxon	http://purl.org/dc/dcmitype/StillImage	image/png	https://zenodo.org/record/13169609/files/figure.png	https://doi.org/10.5281/zenodo.13169609	Fig. 20 Hyalogyrina glabra, reconstruction of anatomy of nervous system. (a) Left side view, body wall shown transparent. (b) Dorsal view. Labels: B/B’ = right/left buccal ganglion, CPl/CPl’ = right/left cerebropleural ganglion, O = osphradial ganglion, P/P’ = right/left pedal ganglion, Sb = suboesophageal ganglion, Sp = supraoesophageal ganglion, st = statocysts; 2/2’ = right/left tentacle nerves, 3/3’ = right/left	Fig. 20 Hyalogyrina glabra, reconstruction of anatomy of nervous system. (a) Left side view, body wall shown transparent. (b) Dorsal view. Labels: B/B’ = right/left buccal ganglion, CPl/CPl’ = right/left cerebropleural ganglion, O = osphradial ganglion, P/P’ = right/left pedal ganglion, Sb = suboesophageal ganglion, Sp = supraoesophageal ganglion, st = statocysts; 2/2’ = right/left tentacle nerves, 3/3’ = right/left	2011-06-19	Hess, Gerhard Haszprunar Erika Speimann Andreas Hawe Martin		Zenodo	biologists	Hess, Gerhard Haszprunar Erika Speimann Andreas Hawe Martin			
