Where: Russian Federation (75.5° N, 139.0° E: paleocoordinates 73.7° N, 30.7° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Neosirenites pentastichus ammonoid zone, Tuvalian (232.0 - 221.5 Ma)

• group of beds-level stratigraphic resolution

Environment/lithology: marine; lithified siliciclastic sediments

Size class: macrofossils

Preservation: mold/impression

Collection methods: Repository: Institute of Geology and Geophysics, Novosibirsk

Primary reference: E. S. Sobolev. 1989. Triasovye nautilidy severo-vostochnoy Azii. Akademiya Nauk SSSR, Sibirskoe Otdelenie Trudy Instituta Geologii I Geofiziki 727:1-193 [M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 166689: authorized by Matthew Clapham, entered by Matthew Clapham on 22.02.2015

Creative Commons license: CC BY (attribution)