Where: Bashkortostan, Russian Federation (53.6° N, 56.1° E: paleocoordinates 22.6° N, 42.9° E)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Asselian to Asselian (298.9 - 290.1 Ma)

• The preliminary estimate of the geological age based on geological exploration profiles is Late Asselian (Mazaev, 2017, 2019). Late Asselian-early Sakmarian in Leonova (2019).

• group of beds-level stratigraphic resolution

Environment/lithology: reef, buildup or bioherm; lithified reef rocks

Size class: macrofossils

Preservation: mold/impression

Collected by Mazaev, Boiko; reposited in the PIN

Primary reference: T. B. Leonova. 2020. Asselian-Sakmarian ammonoids of the Early Permian Shakh-Tau Reef (Bashkortostan). Paleontological Journal 54:1095-1112 [M. Clapham/M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 217202: authorized by Matthew Clapham, entered by Matthew Clapham on 30.01.2021

Creative Commons license: CC BY (attribution)