3 miles southwest of Castle Rock (Cretaceous to of the United States)

Where: Gove County, Kansas (38.8° N, 100.2° W: paleocoordinates 44.0° N, 69.4° W)

• coordinate stated in text

• small collection-level geographic resolution

When: Niobrara Formation (Colorado Group), Late/Upper Santonian to Late/Upper Santonian (85.8 - 70.6 Ma)

• single specimen

• bed-level stratigraphic resolution

Environment/lithology: marine; lithology not reported

• no details given
• none given

Size class: macrofossils

Collection methods: specimen found in ROM collection

Primary reference: E. L. Nicholls. 1988. New material of Toxochelys latiremis Cope, and a revision of the genus Toxochelys (Testudines, Chelonioidea). Journal of Vertebrate Paleontology 8(2):181-187 [J. Alroy/J. Alroy/J. Alroy]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 25071: authorized by John Alroy, entered by John Alroy on 27.08.2002, edited by Mark Uhen

Creative Commons license: CC BY (attribution)

Taxonomic list

 Testudines -
Toxochelys latiremis Cope 1873 turtle
 Squamata - Mosasauridae
Selmasaurus johnsoni n. sp. Polcyn and Everhart 2008 mosasaur