Shell (Jurassic of the United States)

Where: Natrona County, Wyoming (43.6° N, 107.8° W: paleocoordinates 38.3° N, 51.9° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Upper Member (Sundance Formation), Early/Lower Oxfordian (161.2 - 155.7 Ma)

• member informally known as "Redwater Shale"

Environment/lithology: marginal marine; poorly lithified, glauconitic shale and poorly lithified sandstone

Size class: macrofossils

Collected by F. R. O'Keefe; reposited in the UNSM, UW

Collection methods: quarrying, surface (float), surface (in situ), mechanical,

Primary reference: F. R. O'Keefe and H. P. Street. 2009. Osteology of the cryptocleidoid plesiosaur Tatenectes laramiensis, with comments on the taxonomic status of the Cimoliasauridae. Journal of Vertebrate Paleontology 29(1):48-57 [M. Carrano/H. Street]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 96690: authorized by Matthew Carrano, entered by Hallie Street on 25.06.2010, edited by Jonathan Tennant

Creative Commons license: CC BY (attribution)

Taxonomic list

Reptilia
 Plesiosauria - Cryptoclididae
Pantosaurus striatus Marsh 1891 plesiosaur
USNM 536965, partial skeleton
Tatenectes laramiensis Knight 1900 plesiosaur