Where: Switzerland (47.7° N, 8.5° E: paleocoordinates 37.2° N, 18.2° E)

• coordinate estimated from map

• small collection-level geographic resolution

When: Opalinum Zone Member, Early/Lower Aalenian (175.6 - 171.6 Ma)

• bed-level stratigraphic resolution

Environment/lithology: offshore; lithified mudstone

Size class: macrofossils

Preservation: mold/impression, original calcite

Collection methods: mechanical

Primary reference: W. Etter. 1990. Paläontologische Untersuchungen im unteren Opalinuston der Nordschweiz. 151pp. [M. Aberhan/S. Nurnberg/S. Nurnberg] more details

Purpose of describing collection: paleoecologic analysis

PaleoDB collection 36162: authorized by Martin Aberhan, entered by Sabine Nürnberg on 15.01.2004