Where: Russian Federation (50.9° N, 133.1° E: paleocoordinates 54.5° N, 141.7° E)

• coordinate estimated from map

• local area-level geographic resolution

When: Late/Upper Aalenian (175.6 - 171.6 Ma)

Environment/lithology: marine; gray siltstone and fine-grained, gray sandstone

Size class: macrofossils

Primary reference: I. I. Sey and A. D. Kalacheva. 1980. Biostratigraphy of the Lower and Middle Jurassic deposits of the Far East. "Nedra" Publisher, Leningrad 187 [J. Pálfy/M. Bosnakoff/M. Bosnakoff] more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 129622: authorized by József Pálfy, entered by Mariann Bosnakoff on 26.06.2012