Unguokhtakh River, Dulgalakh Fm, Orulgan Range (Permian of Russian Federation)

Where: Russian Federation (68.8° N, 127.3° E: paleocoordinates 64.2° N, 37.0° E)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Dulgalakh Formation, Capitanian (264.3 - 259.5 Ma)

• group of beds-level stratigraphic resolution

Environment/lithology: marine; lithified siliciclastic sediments

Size class: macrofossils

Primary reference: K. A. Astafieva-Urbajtis. 1976. The genus Myonia (Bivalvia) in the Permian of the northeast of the USSR. Paleontological Journal 10(1):23-36 [M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 101697: authorized by Matthew Clapham, entered by Matthew Clapham on 29.12.2010

Creative Commons license: CC BY (attribution)

Taxonomic list

Bivalvia
 Cardiidia - Sanguinolitidae
"Myonia (Myonia) sulcatiformis" = Myonia (Myomedia) carinata
"Myonia (Myonia) sulcatiformis" = Myonia (Myomedia) carinata Morris 1845 clam
 Pectinida - Deltopectinidae
Deltopecten limaeformis Morris 1845 scallop