Where: Russian Federation (71.8° N, 127.0° E: paleocoordinates 60.5° N, 30.6° E)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Roadian (272.3 - 268.8 Ma)

• Aphanaia dilatata-Kolymia inoceramiformis zone

• group of beds-level stratigraphic resolution

Environment/lithology: marine; lithified siliciclastic sediments

Size class: macrofossils

Preservation: mold/impression

Collection methods: Repository: Museum of the Shilo Northeast Interdisciplinary Scientific Research Institute of the Russian Academy of Sciences (SVKNII)

Primary reference: A. S. Biakov and R. V. Kutygin. 2018. Bivalves from the Delendzhian–Dulgalakhian boundary beds of the Middle Permian of the lower reaches of the Lena River (Northern Verkhoyansk region, Northern Siberia). Paleontological Journal 52:761-767 [M. Clapham/M. Clapham]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 198781: authorized by Matthew Clapham, entered by Matthew Clapham on 10.01.2019

Creative Commons license: CC BY (attribution)