Where: Russian Federation (73.0° N, 120.5° E: paleocoordinates 63.4° N, 15.2° E)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Gymnotoceras rotelliforme ammonoid zone, Illyrian (247.2 - 242.0 Ma)

• 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 151170: authorized by Matthew Clapham, entered by Matthew Clapham on 23.09.2013

Creative Commons license: CC BY (attribution)