Where: Blaine County, Montana (48.1° N, 106.3° W: paleocoordinates 54.4° N, 72.0° W)

• coordinate based on nearby landmark

When: Judith River Formation, 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 69178: authorized by Juergen Kriwet, entered by Wolfgang Glaeser on 20.02.2007