Where: Yunnan, China (27.5° N, 101.0° E: paleocoordinates 3.1° S, 80.3° E)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Beiya Formation, Anisian (247.2 - 242.0 Ma)

• group of beds-level stratigraphic resolution

Environment/lithology: marine; lithology not reported

Size class: macrofossils

Preservation: mold/impression

Primary reference: F. X. Guo. 1985. Fossil Bivalves of Yunnan 1-319 [M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 98491: authorized by Matthew Clapham, entered by Matthew Clapham on 07.10.2010

Creative Commons license: CC BY (attribution)