Where: Arizona (34.5° N, 111.3° W: paleocoordinates 8.3° N, 36.7° W)

• coordinate based on nearby landmark

• small collection-level geographic resolution

When: Fossil Mountain Member (Kaibab Formation), Kungurian (279.3 - 272.3 Ma)

• Gamma membmer

• group of beds-level stratigraphic resolution

Environment/lithology: lagoonal or restricted shallow subtidal; lithified limestone

Size class: macrofossils

Preservation: mold/impression

Primary reference: N. D. Newell and K.W. Ciriacks. 1962. A new bivalve from the Permian of the western United States. American Museum Novitates 2121:1-4 [M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 115796: authorized by Matthew Clapham, entered by Matthew Clapham on 03.09.2011

Creative Commons license: CC BY (attribution)