Echinodermata, Marls of the Variabilis zone, Thouars (Jurassic of France)

Where: Poitou-Charentes, France (47.0° N, 0.2° W: paleocoordinates 35.1° N, 11.2° E)

• coordinate based on nearby landmark

• small collection-level geographic resolution

When: Thouasense, Variabilis zone, Middle Toarcian (182.0 - 175.6 Ma)

• The section is described in full details by Galbrun et al., 1994

• group of beds-level stratigraphic resolution

Environment/lithology: offshore; poorly lithified, ooidal, gray, argillaceous marl

Size classes: macrofossils, mesofossils, microfossils

Collection methods: bulk, sieve,

Primary reference: M. Kutscher and L. Villier. 2003. Ophiuroid remains from the Toarcian of Sainte-Verge (Deux-Sevres, France): paleobiological perspectives. GĂ©obios 36(2):179-194 [L. Villier/L. Villier/J. Alroy]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 31839: authorized by Loic Villier, entered by Loic Villier on 27.05.2003

Creative Commons license: CC BY (attribution)

Taxonomic list

Ophiuroidea
 Ophiurida - Hemieuryalidae
? Sigsbeia lunaris Hess 1962 brittle star
 Ophiurida - Ophiolepididae
Mesophiomusium geisingense Kutscher 1992 brittle star
Mesophiomusium scabrum Hess 1962 brittle star
 Ophiurida -
Ophiotrapezium spinulosum Kutscher 1996 brittle star
 Ophiurida - Ophiacanthidae
? Ophiacantha toarcensis Hess 1962 brittle star
 Ophiurida - Ophiodermatidae
? Ophiarachna liasica Kutscher 1996 brittle star
 Ophiurida - Aplocomidae
? Ophiopetra oertlii Hess 1965 brittle star
Sinosura fasciata n. sp. Kutscher and Villier 2003 brittle star
Sinosura brodiei Wright 1866 brittle star
Sinosura schneideri Kutscher 1987 brittle star
Sinosura extensa n. sp. Kutscher and Villier 2003 brittle star
 Ophiurida - Ophiuridae
? Ophiura astonensis Hess 1964 brittle star
? Ophiocten seeweni Kutscher and Hary 1991 brittle star
Asteroidea
 Paxillosida - Astropectinidae
? Pentasteria liasica n. sp. Villier et al. 2004 sea star
 Valvatida - Stauranderasteridae
Poncetaster crateri n. gen. n. sp.
Poncetaster crateri n. gen. n. sp. Villier et al. 2004 sea star
 Valvatida - Goniasteridae
Comptoniaster vrinensis n. sp. Villier et al. 2004 sea star
Galbaster recurrans n. gen. n. sp. Villier et al. 2004 sea star
 Velatida -
? Plesiastropecten hallovensis Peyer 1944 sea star