Where: Russian Federation (50.5° N, 116.8° E: paleocoordinates 60.8° N, 76.9° E)

• coordinate based on nearby landmark

• small collection-level geographic resolution

When: Antiya Formation, Wordian (266.9 - 264.3 Ma)

• Upper Antiya Formation

• group of beds-level stratigraphic resolution

Environment/lithology: marine; lithology not reported

Size class: macrofossils

Primary reference: A. S. Biakov. 2002. Permian bivalves from the Transbaikal Region. Paleontological Journal 36(5):460-468 [M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 83128: authorized by Matthew Clapham, entered by Matthew Clapham on 07.08.2008

Creative Commons license: CC BY (attribution)