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

Where: Niobrara County, Wyoming (43.4° N, 104.5° W: paleocoordinates 50.0° N, 78.7° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Lance Formation, Maastrichtian (72.1 - 66.0 Ma)

• bed-level stratigraphic resolution

Environment/lithology: terrestrial; lithology not reported

Size class: macrofossils

Collected by O. Peterson in 1902; reposited in the CM

Collection methods: surface (in situ),

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 142325: authorized by Matthew Carrano, entered by Matthew Carrano on 09.04.2013

Creative Commons license: CC BY (attribution)

Taxonomic list

 Avetheropoda - Tyrannosauridae
Tyrannosaurus rex Osborn 1905 tyrant lizard king
CM 1400
 Neornithischia - Ceratopsidae
Triceratops sp. Marsh 1889 ceratopsid
CM 998, 1070