Where: Russian Federation (70.8° N, 127.8° E: paleocoordinates 67.9° N, 7.5° E)

When: Arctoptychites omolojensis ammonoid zone, Longobardian (242.0 - 235.0 Ma)

Environment/lithology: marine; lithified siliciclastic sediments

Size class: macrofossils

Primary reference: V. V. Arkadiev and M. N. Vavilov. 1989. Anisian-Ladinian Boundary in Boreal Region Based on Ammonoidea. Palaeontographica Abteilung A 207:49-78 [M. Clapham/C. Feng]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 112632: authorized by Matthew Clapham, entered by Christina Feng on 14.07.2011

Creative Commons license: CC BY (attribution)