Where: Switzerland (47.5° N, 8.2° E: paleocoordinates 36.5° N, 11.2° E)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Insektenmergel Formation, Middle Hettangian (201.3 - 196.5 Ma)

• Schlotheimia angulata zone

• member-level stratigraphic resolution

Environment/lithology: offshore; poorly lithified claystone

Size classes: macrofossils, mesofossils

Preservation: replaced with calcite, replaced with pyrite

Collection methods: quarrying, chemical, mechanical,

Primary reference: H. Hess. 1960. Ophioderma escheri Heer aus dem unteren Lias der Schambelen (Kt. Aargau) und verwandete Lias-Ophiuren aus England und Deutschland. Eclogae Geologicae Helvetiae 53(2):757-793 [L. Villier/L. Villier/L. Villier]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 61725: authorized by Loic Villier, entered by Loic Villier on 24.06.2006

Creative Commons license: CC BY (attribution)