Also known as CCU 2099/54-60

Where: Russian Federation (73.5° N, 116.0° E: paleocoordinates 57.9° N, 31.2° E)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Kolymia multiformis other zone, Kozhevnikov Formation, Wordian (266.9 - 264.3 Ma)

• Upper Kozhevnikov Formation, Kolymia multiformis bivalve zone, Urzhumian (Delenzha regional horizon)

• group of beds-level stratigraphic resolution

Environment/lithology: marine; lithified sandstone

Size class: macrofossils

Preservation: mold/impression

Collected by A.B. Kuzmichev, M.K. Danukalova, E.S. Sobolev in 2012

• Repository: North East Interdisciplinary Sciences Research Institute (NEISRI) and Centre for Collective Use "Geokhron" of Trofimuk Institute of Petroleum Geology and Geophysics, Siberian Branch, Russian Academy of Sciences (CCU "Geokhron" IPGG SB RAS)

Primary reference: A. S. Biakov, M. K. Danukalova, A. B. Kuzmichev and E. S. Sobolev. 2021. Permian bivalves of the Pronchishchev Ridge (North Siberia): new data on taxonomic composition, biostratigraphy, and biogeographic relationships. Paleontological Journal 55:24-34 [M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 221254: authorized by Matthew Clapham, entered by Matthew Clapham on 19.07.2021

Creative Commons license: CC BY (attribution)