Where: Blaine County, Montana (47.8° N, 108.9° W: paleocoordinates 54.8° N, 75.0° W)

• coordinate based on nearby landmark

When: Judith River Formation, Middle Campanian to Middle Campanian (83.5 - 70.6 Ma)

Environment/lithology: deltaic; siliciclastic sediments

Size classes: macrofossils, mesofossils

Primary reference: G. R. Case. 1978. A new selachian fauna from the Judith River Formation (Campanian) of Montana. Palaeontographica Abteilung A 160(Lfg. 1-6):176-205 [J. Kriwet/W. Glaeser/M. Carrano]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 69251: authorized by Juergen Kriwet, entered by Wolfgang Glaeser on 22.02.2007

Creative Commons license: CC BY (attribution)