Where: Wyoming (42.8° N, 108.9° W: paleocoordinates 14.6° N, 30.5° W)

• coordinate estimated from map

• small collection-level geographic resolution

When: Franson Member (Park City Formation), Wordian (268.0 - 265.0 Ma)

• Probably Franson Member....

• bed-level stratigraphic resolution

Environment/lithology: marine; lime mudstone and calcareous grainstone

Preservation: replaced with silica

Reposited in the AMNH

• University of Washington 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 61951: authorized by Pete Wagner, entered by Pete Wagner on 08.07.2006, edited by Matthew Clapham