Where: Russian Federation (62.5° N, 139.0° E: paleocoordinates 70.1° N, 41.5° E)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Menkechen Formation, Roadian (272.5 - 268.0 Ma)

• Lower Menkechen subsuite

• group of beds-level stratigraphic resolution

Environment/lithology: marine; lithified siliciclastic sediments

Size class: macrofossils

Preservation: cast, mold/impression

Primary reference: M. M. Astaf'yeva. 1987. The Permian bivalved molluscs Parainoceramus and Kolymia. Paleontological Journal 20(4):23-31 [M. Clapham/M. Clapham] more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 101651: authorized by Matthew Clapham, entered by Matthew Clapham on 28.12.2010

Creative Commons license: CC BY-NC-ND (attribution-noncommercial-no derivatives)