Where: Russian Federation (63.1° N, 139.1° E: paleocoordinates 74.1° N, 30.1° E)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Otoceras boreale ammonoid zone, Griesbachian (251.9 - 250.5 Ma)

• bed-level stratigraphic resolution

Environment/lithology: marine; lithified, nodular mudstone

Size class: macrofossils

Primary reference: Y. D. Zakharov. 2002. Ammonoid succession of Setorym River (Verkhoyansk area) and problem of Permian-Triassic boundary in Boreal Realm. Journal of China University of Geosciences 13:107-123 [M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 187154: authorized by Matthew Clapham, entered by Matthew Clapham on 16.07.2017

Creative Commons license: CC BY (attribution)