Where: Wyoming (41.0° N, 105.9° W: paleocoordinates 11.4° N, 29.4° W)

• coordinate based on nearby landmark

• small collection-level geographic resolution

When: Goose Egg Formation, Kungurian (279.3 - 272.3 Ma)

• Lower Goose Egg Formation

• bed-level stratigraphic resolution

Environment/lithology: lagoonal or restricted shallow subtidal; lithified siliciclastic sediments

Size class: macrofossils

Reposited in the AMNH

Primary reference: N. D. Newell and D.W. Boyd. 1975. Parallel evolution in early trigonacean bivalves. Bulletin of the American Museum of Natural History 154(2):55-162 [D. Bottjer/M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 136206: authorized by Matthew Clapham, entered by Matthew Clapham on 22.11.2012

Creative Commons license: CC BY (attribution)