Where: Wyoming (44.0° N, 108.0° W: paleocoordinates 35.5° N, 48.3° W)

• coordinate estimated from map

• local area-level geographic resolution

When: Rich Member (Twin Creek Limestone Formation), Bajocian (170.3 - 168.3 Ma)

• member-level stratigraphic resolution

Environment/lithology: open shallow subtidal; lithified lime mudstone

Size class: macrofossils

Preservation: trace, original calcite

Collection methods: mechanical

Primary reference: R. P. Wright. 1974. Jurassic Bivalves from Wyoming and South Dakota: A study of feeding relationsips. Journal of Paleontology 48(3):425-433 [M. Aberhan/S. Nurnberg/S. Nurnberg]more details

Purpose of describing collection: paleoecologic analysis

PaleoDB collection 36527: authorized by Martin Aberhan, entered by Sabine Nürnberg on 03.02.2004

Creative Commons license: CC BY (attribution)