Between Fort Lookout and Fort Pierre (Cretaceous of the United States)

Where: Lyman County, South Dakota (44.1° N, 99.7° W: paleocoordinates 48.9° N, 66.4° W)

• coordinate based on nearby landmark

• small collection-level geographic resolution

When: Pierre Shale Formation, Campanian (83.6 - 72.1 Ma)

• upper Pierre

• bed-level stratigraphic resolution

Environment/lithology: marine; shale

Size class: macrofossils

Primary reference: D. A. Russell. 1964. The Skull of American Mosasaurs. 1-386 [M. Carrano/H. Street/P. Wagner]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 107711: authorized by Matthew Carrano, entered by Hallie Street on 14.04.2011

Creative Commons license: CC BY (attribution)

Taxonomic list

 Squamata - Mosasauridae
Mosasaurus missouriensis Harlan 1834 mosasaur
Type specimen