Where: Russian Federation (69.5° N, 129.0° E: paleocoordinates 63.4° N, 33.9° E)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

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

• Originally entered as Roadian, but the Boguchan Formation is Wordian according to Biakov et al. (2012).

• 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. 1988. Bivalved mollusks of the genus Kolymia. Paleontological Journal 22(1):17-26 [M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 101663: authorized by Matthew Clapham, entered by Matthew Clapham on 28.12.2010

Creative Commons license: CC BY (attribution)