Where: Chelyabinsk, Russian Federation (55.0° N, 57.7° E: paleocoordinates 24.8° N, 43.1° E)

• coordinate based on nearby landmark

When: Sakmarian (293.5 - 290.1 Ma)

• Tastuba regional stage

• group of beds-level stratigraphic resolution

Environment/lithology: lithified, nodular limestone

Size class: macrofossils

Primary reference: A. Ivanov. 2005. Early Permian chondrichthyans of the middle and south Urals. Revista Brasileira de Paleontologia 8(2):127-138 [M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 90299: authorized by Matthew Clapham, entered by Matthew Clapham on 15.07.2009

Creative Commons license: CC BY (attribution)