Taas-Aryy Island, Lena River (omkutchanicum zone) (Triassic of Russian Federation)

Where: Russian Federation (71.8° N, 127.2° E: paleocoordinates 71.2° N, 1.3° E)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: omkutchanicum ammonoid zone, Julian (235.0 - 232.0 Ma)

• 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. S. Dagys and N. I. Kurushin. 1985. Triasovye brakhiopody i dvustvorchatye mollyuski severa sredney Sibiri. Akademiya Nauk SSSR, Sibirskoe Otdelenie Trudy Instituta Geologii I Geofiziki 633:1-160 [M. Clapham/M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 135844: authorized by Matthew Clapham, entered by Matthew Clapham on 11.11.2012

Creative Commons license: CC BY (attribution)

Taxonomic list

 Ceratitida - Trachyceratidae
Boreotrachyceras omkutchanicum Bychkov 1973 ceratite
Trachyceras sp. Laube 1869 ceratite
 Rhynchonellida - Rhynchonellidae