Echinoderms, Angulatus zone, Hettangian, Schaffhausen, Hallau (Jurassic of Switzerland)

Where: Switzerland (47.7° N, 8.5° E: paleocoordinates 36.8° N, 11.3° E)

• coordinate based on nearby landmark

• hand sample-level geographic resolution

When: liasicus zone, Early/Lower Hettangian (201.3 - 196.5 Ma)

• Angulatus zone

• bed-level stratigraphic resolution

Environment/lithology: offshore; poorly lithified, green claystone and poorly lithified, calcareous sandstone

Size classes: macrofossils, mesofossils

Preservation: recrystallized, replaced with calcite, replaced with pyrite

Collection methods: quarrying, mechanical,

Primary reference: B. Peyer. 1944. Beiträge zur Kenntnis von Rhät und Lias [Contributions to knowledge of the Rhaetian and Lias]. Eclogae Geologicae Helvetiae 36(7):303-326 [L. Villier/L. Villier/M. Carrano]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 32019: authorized by Loic Villier, entered by Loic Villier on 01.06.2003

Creative Commons license: CC BY (attribution)

Taxonomic list

Ostracoda
 Podocopida - Bairdiidae
Crinoidea
 Isocrinida - Isocrinidae
Chladocrinus angulatus Sea lily
3 fragments
Ophiuroidea
 Amphilepidida - Ophiolepididae
Aplocoma brevispina n. sp. Hess 1985 brittle star
about 25 complete individuals
Asteroidea
 Spinulosida -
Plesiastropecten hallovensis n. sp. Peyer 1944 sea star