Where: Azerbaijan (39.6° N, 45.1° E: paleocoordinates 0.9° S, 38.8° E)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Ali Bashi Formation, Changhsingian (254.2 - 252.2 Ma)

• Paratirolites beds are uppermost Permian

• group of beds-level stratigraphic resolution

Environment/lithology: limestone

Collection methods: Nature of collection unspecified but very likely partially from float and/or encompassing several localities.

Primary reference: V. E. Ruzhentsev and T. G. Sarycheva. 1965. The Development and Change of Marine Organisms at the Palaeozoic-Mesozoic Boundary. Akademiya Nauk SSSR, Trudy Paleontologicheskogo Instituta 108:1-431 [M. Clapham/M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 40941: authorized by David Bottjer, entered by Matthew Clapham on 03.07.2004

Creative Commons license: CC BY (attribution)