Willow Creek (CM) (Cretaceous of the United States)

Where: Fergus County, Montana (47.4° N, 109.7° W: paleocoordinates 54.5° N, 76.1° W)

• coordinate based on nearby landmark

• small collection-level geographic resolution

When: Judith River Formation (Montana Group), Late/Upper Campanian (83.5 - 70.6 Ma)

• bed-level stratigraphic resolution

Environment/lithology: terrestrial; lithology not reported

Size class: macrofossils

Collected by J. B. Hatcher in 1903; reposited in the CM

Collection methods: mechanical,

Primary reference: J. S. McIntosh. 1981. Annotated catalogue of the dinosaurs (Reptilia, Archosauria) in the collections of the Carnegie Museum of Natural History. Bulletin of Carnegie Museum of Natural History 18:1-67 [M. Carrano/M. Carrano/M. Carrano]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 69624: authorized by Matthew Carrano, entered by Matthew Carrano on 28.02.2007

Creative Commons license: CC BY (attribution)

Taxonomic list

Reptilia
 Avetheropoda - Tyrannosauridae
? Tyrannosaurus sp. Osborn 1905 tyrant lizard
CM 9401
 Crocodylia -
"Deinosuchus hatcheri n. gen. n. sp." = Deinosuchus rugosus
"Deinosuchus hatcheri n. gen. n. sp." = Deinosuchus rugosus Emmons 1858 crocodilian
CM 963