Where: Russian Federation (62.8° N, 159.4° E: paleocoordinates 74.4° N, 0.6° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Dzhigdali Formation, Roadian (272.3 - 268.8 Ma)

• Middle Permian, Roadian Stage, Omolonian Superhorizon, Russian-Omolonian Horizon, Aphanaia dilatata Bivalve Zone; Outcrop 3a, Beds 4-2, upper part of the Dzhigdali Formation

• group of beds-level stratigraphic resolution

Environment/lithology: marine; lithified siliciclastic sediments

Size class: macrofossils

Preservation: mold/impression

Collection methods: Repository: Museum of the North-East Interdisciplinary Shilo Scientific Research Institute, Far East Branch of the Russian Academy of Sciences (SVKNII FEB RAS)

Primary reference: A. S. Biakov. 2023. New bivalves of the genus Streblopteria (Pectinida, Streblochondriidae) from the Permian of northeast Russia. Paleontological Journal 57:137-145 [M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 202205: authorized by Matthew Clapham, entered by Matthew Clapham on 29.06.2019

Creative Commons license: CC BY (attribution)