Near Connant Creek, Rattlesnake Hills (Plesiopleurodon type locality) (Cretaceous of the United States)

Also known as Near Connanp Creek (mispelling by Carpenter 1996)

Where: Natrona County County, Wyoming (43.0° N, 108.0° W: paleocoordinates 43.4° N, 68.5° W)

• coordinate based on unpublished field data

When: Belle Fourche Member ('Hailey Shales' Formation), Early/Lower Cenomanian (99.6 - 93.5 Ma)

• Carpenter states Belle Fourch Shales, but Carnegie Museum collections data says Hailey Shales Formation

Environment/lithology: marine; concretionary, black lithology not reported

Size class: macrofossils

Reposited in the CM

Collection methods: quarrying

Primary reference: K. Carpenter. 1996. A review of short-necked plesiosaurs of the Western Interior, North America. Neues Jahrbuch fur Geologie und Palaontologie, Abhandlungen 201(2):259-287 [M. Carrano/H. Street]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 117845: authorized by Roger Benson, entered by Roger Benson on 27.09.2011

Creative Commons license: CC BY (attribution)

Taxonomic list

Reptilia
 Plesiosauria - Polycotylidae
Plesiopleurodon wellesi n. gen. n. sp.
Plesiopleurodon wellesi n. gen. n. sp. Carpenter 1996 plesiosaur
CM 2815 (holotype)