Where: Russian Federation (44.0° N, 40.5° E: paleocoordinates 21.8° N, 40.8° E)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Acheshbok Formation, Bithynian (247.2 - 242.0 Ma)

• group of beds-level stratigraphic resolution

Environment/lithology: marine; lithified carbonate

Size class: macrofossils

Primary reference: A. A. Shevyrev. 1995. Triassic ammonoids of the northwest Caucasus. Rossiyskaya Akademiya Nauk, Trudy Paleontologicheskogo Instituta 264:1-174 [M. Clapham/M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 99525: authorized by Matthew Clapham, entered by Matthew Clapham on 15.11.2010

Creative Commons license: CC BY (attribution)