Where: Russian Federation (55.3° N, 38.7° E: paleocoordinates 48.2° N, 41.7° E)

• local area-level geographic resolution

When: Valanginian (139.8 - 132.9 Ma)

Environment/lithology: marine; glauconitic, green, argillaceous sandstone

Size class: macrofossils

Primary reference: V. N. Saks, ed. 1975. The Jurassic-Cretaceous Boundary and the Berriasian Stage in the Boreal Realm. 1-319 [M. Patzkowsky/K. Layou/P. Wagner]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 2515: authorized by Mark Patzkowsky, entered by Karen Layou on 07.07.1999, edited by Austin Hendy

Creative Commons license: CC BY (attribution)