Eastern Niobrara County (Cretaceous of the United States)

Where: Niobrara County, Wyoming (43.3° N, 104.1° W: paleocoordinates 49.2° N, 71.5° W)

• coordinate stated in text

• small collection-level geographic resolution

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

• "near base of Pierre"

• bed-level stratigraphic resolution

Environment/lithology: marine; shale

Size class: macrofossils

Collected by B. Schaeffer, W. Sorenson; reposited in the AMNH

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 107672: authorized by Matthew Carrano, entered by Hallie Street on 13.04.2011

Creative Commons license: CC BY (attribution)

Taxonomic list

 Squamata - Mosasauridae
"Platecarpus ictericus" = Platecarpus tympaniticus
"Platecarpus ictericus" = Platecarpus tympaniticus Cope 1869 mosasaur
AMNH 2182, skull