Where: Russian Federation (52.3° N, 56.8° E: paleocoordinates 17.0° N, 38.2° E)

• coordinate estimated from map

• small collection-level geographic resolution

When: Chokierian to Chokierian (323.7 - 321.8 Ma)

• Nm2a (corresponds to Chokierian/Alportian); Upper Namurian

• group of beds-level stratigraphic resolution

Environment/lithology: offshore shelf; lithified carbonate

Size class: macrofossils

Primary reference: V. E. Ruzhentsev and M. F. Bogoslovskaya. 1978. Namyurskii etap v evolyutsii ammonoidyey - Namurian stage, evolution of ammonoids. Trudyi paleontologicheskovo instituta 167:1-338 [M. Aberhan/S. Nurnberg/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 67765: authorized by Martin Aberhan, entered by Sabine Nürnberg on 08.12.2006

Creative Commons license: CC BY (attribution)