Also known as Usta River; Bol. Sidorovo; Bolshoe Sidorovo; Bolshoye Sidorovo

Where: Nizhegorod, Russian Federation (57.3° N, 46.3° E: paleocoordinates 32.0° N, 37.1° E)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Vokhminskaya Formation, Induan (252.2 - 251.2 Ma)

• group of beds-level stratigraphic resolution

Environment/lithology: terrestrial; lithology not reported

Size class: macrofossils

Reposited in the PIN

Primary reference: M. A. Shishkin and I. V. Novikov. 1992. Relict anthracosaurs in the early Mesozoic of Eastern Europe. Transactions (Doklady) of the U.S.S.R. Academy of Sciences: Earth Science Sections 326:219-223 [J. Alroy/R. Whatley/M. Uhen]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 28397: authorized by John Alroy, entered by Robin Whatley on 11.02.2003

Creative Commons license: CC BY (attribution)