Pesha River, northern Russian Platform (Permian of Russian Federation)

Where: Russian Federation (66.5° N, 48.3° E: paleocoordinates 35.2° N, 34.0° E)

• coordinate based on nearby landmark

• small collection-level geographic resolution

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

• group of beds-level stratigraphic resolution

Environment/lithology: marine; lithified siliciclastic sediments

Size class: macrofossils

Primary reference: V. A. Muromtseva and V. A. Guskov. 1984. Permskie Morskie Otlozheniya I Dvustvorchatie Mollyuski Sovetskoi Arktiki 1-154 [M. Clapham/M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 113946: authorized by Matthew Clapham, entered by Matthew Clapham on 07.08.2011

Creative Commons license: CC BY (attribution)

Taxonomic list

Bivalvia
 Mytilida - Mytilidae
Promytilus retusus Chronic 1952 mussel
 Carditida - Astartidae
Astartella permocarbonica Tschernyschew 1885 clam
 Cardiidia - Sanguinolitidae
Praeundulomya leonidi n. sp., ? Myonia sp., "Myonia (Myonia) komiensis" = Myonia komiensis
Praeundulomya leonidi n. sp. Muromtseva 1984 clam
? Myonia sp. Dana 1847 clam
"Myonia (Myonia) komiensis" = Myonia komiensis Maslennikov 1935 clam
 Cardiida - Kalenteridae
Permophorus angustus Muromtseva 1981 clam
Stutchburia pallasi de Verneuil 1845 clam