Milk River (Cretaceous of the United States)

Where: Blaine County, Montana (48.6° N, 109.2° W: paleocoordinates 55.4° N, 74.1° W)

• coordinate based on nearby landmark

When: Judith River Formation, Campanian (83.6 - 72.1 Ma)

Environment/lithology: lacustrine; siliciclastic sediments

• Site 11 is composed of Bentonite with Soda-ash (Alkali) in association, small residues of Kaolinite (poor grade) containing lignitized wood shards, and resin (Amber). The site is a Lake deposit.

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 69177: authorized by Juergen Kriwet, entered by Wolfgang Glaeser on 20.02.2007

Creative Commons license: CC BY (attribution)

Taxonomic list

Chondrichthyes
 Hybodontiformes - Hybodontidae
Hybodus montanensis n. sp. Case 1978 elasmobranch
 Myliobatiformes - Dasyatidae
Myledaphus bipartitus Cope 1876 whiptail stingray