Where: Russian Federation (65.0° N, 130.0° E: paleocoordinates 69.6° N, 35.2° E)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Dulgalakh Formation, Changhsingian (254.2 - 252.2 Ma)

• Top of Dulgalakh horizon

• group of beds-level stratigraphic resolution

Environment/lithology: marine; lithified siliciclastic sediments

Size class: macrofossils

Preservation: cast, mold/impression

Primary reference: A. S. Biakov. 1991. Permian Inoceramus-like mollusks of the genus Intomodesma Popov. Paleontological Journal 25(4):159-164 [M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 101870: authorized by Matthew Clapham, entered by Matthew Clapham on 04.01.2011

Creative Commons license: CC BY (attribution)