Bilby's Ranch, Beaver Creek (Cretaceous to of the United States)

Also known as Eonatator sternbergii type locality

Where: Logan County, Kansas (38.8° N, 100.9° W: paleocoordinates 44.1° N, 70.2° W)

• coordinate based on nearby landmark

• small collection-level geographic resolution

When: Smoky Hill Chalk Member (Niobrara Formation), Late/Upper Santonian to Late/Upper Santonian (85.8 - 70.6 Ma)

• bed-level stratigraphic resolution

Environment/lithology: marine; chalk

Size class: macrofossils

Collected by L. Sternberg

Primary reference: D. A. Russell. 1967. Systematics and morphology of American mosasaurs (Reptilia, Sauria). Bulletin of the Peabody Museum of Natural History 23:1-252 [M. Carrano/H. Street/M. Carrano]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 109698: authorized by Matthew Carrano, entered by Hallie Street on 21.05.2011

Creative Commons license: CC BY (attribution)

Taxonomic list

 Squamata - Mosasauridae
"Clidastes sternbergi n. sp." = Halisaurus sternbergi
"Clidastes sternbergi n. sp." = Halisaurus sternbergi Wiman 1920 mosasaur
UPI R 163 - type (a nearly complete skeleton) and USNM 3777 (incomplete skeleton)