Where: Russian Federation (63.4° N, 140.9° E)

• Paleocoordinates: 81.1° N, 87.7° E (Wright 2013)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Nekuchan Formation, Griesbachian (251.9 - 250.5 Ma)

• Tompophiceras pascoei-morpheos zone

• group of beds-level stratigraphic resolution

Environment/lithology: marine; lithified siltstone

Size class: macrofossils

Collection methods: Repository: Museum of the Shilo Northeast Interdisciplinary Science Research Institute, Far East Branch, Russian Academy of Sciences (SVKNII FEB RAS, Magadan)

Primary reference: A. S. Biakov and R. V. Kutygin. 2021. First record of the Genus Unionites Wissmann (Bivalvia) in the Boreal Permian of northeast Russia. Paleontological Journal 55:372-377 [M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 221960: authorized by Matthew Clapham, entered by Matthew Clapham on 02.09.2021

Creative Commons license: CC0 (CC0)