Where: Wyoming (43.3° N, 110.0° W: paleocoordinates 15.5° N, 31.1° W)

• coordinate estimated from map

• small collection-level geographic resolution

When: Lower Member (Shedhorn Formation), Wordian (266.9 - 264.3 Ma)

• Unnamed lower member

• bed-level stratigraphic resolution

Environment/lithology: marine; sandstone and limestone

Preservation: replaced with silica

Reposited in the AMNH

• University of Wyoming Museum

Primary reference: N. D. Newell and D.W. Boyd. 1995. Pectinoid bivalves of the Permian-Triassic crisis. Bulletin of the American Museum of Natural History 227:1-95 [D. Bottjer/M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 61949: authorized by Pete Wagner, entered by Pete Wagner on 08.07.2006

Creative Commons license: CC BY (attribution)