Where: Russian Federation (75.0° N, 112.8° E: paleocoordinates 60.5° N, 14.7° E)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Illyrian (247.2 - 242.0 Ma)

• Most likely from the Frechites nevadanus zone (dzeginense or nevadanus subzones) but could be from the olenekense subzone of the Gymnotoceras rotelliforme zone.

• group of beds-level stratigraphic resolution

Environment/lithology: marine; lithified siliciclastic sediments

Size class: macrofossils

Preservation: mold/impression

Collection methods: Repository: TsSGM (Central Siberian Geological Museum in the Institute of Geology, Geography and Mineralogy of the Siberian Branch, Russian Academy of Sciences, Novosibirsk), same as IGiG (Institute for Geology and Geophysics, Novosibirsk)

Primary reference: A. G. Konstantinov. 1991. Biostratigrafiya i ammonoidei verkhnego Aniziya severa Sibiri. Akademiya Nauk SSSR, Sibirskoe Otdelenie Trudy Instituta Geologii I Geofiziki 787:1-136 [M. Clapham/M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 151186: authorized by Matthew Clapham, entered by Matthew Clapham on 23.09.2013

Creative Commons license: CC BY (attribution)