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: Tompophiceras morpheous ammonoid zone, Nekuchan Formation, 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 187171: authorized by Matthew Clapham, entered by Matthew Clapham on 16.07.2017
Creative Commons license: CC BY (attribution)
Taxonomic list
Cephalopoda | |
Tompophiceras morpheous ceratite |