Aldzhirkhai Creek, upper Anisian, Kengdey River basin (Triassic of Russian Federation)

Where: Russian Federation (71.7° N, 128.0° E: paleocoordinates 65.8° N, 13.3° E)

• coordinate estimated from map

• 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

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 151189: authorized by Matthew Clapham, entered by Matthew Clapham on 23.09.2013

Creative Commons license: CC BY (attribution)

Taxonomic list

Cephalopoda
 Nautilida - Tainoceratidae
Arctonautilus egorovi Sobolev 1989 nautiloid
 Ceratitida - Ceratitidae
Arctogymnites sonini Popov 1961 ceratite