Where: Utah (38.3° N, 111.4° W: paleocoordinates 8.2° N, 37.3° W)

• coordinate stated in text

• small collection-level geographic resolution

When: Virgin Limestone Member (Moenkopi Formation), Spathian (251.3 - 247.2 Ma)

• bed-level stratigraphic resolution

Environment/lithology: shallow subtidal; lithified limestone

Size classes: macrofossils, mesofossils

• Only left valves

Preservation: replaced with silica

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 94878: authorized by Matthew Clapham, entered by Matthew Clapham on 31.03.2010

Creative Commons license: CC BY (attribution)