Also known as Clidastes planifrons type

Where: Trego County, Kansas (38.8° N, 100.1° W)

• Paleocoordinates: 45.3° N, 59.2° W (Wright 2013)

• coordinate based on nearby landmark

• small collection-level geographic resolution

When: Smoky Hill Chalk Member (Niobrara Formation), Late/Upper Coniacian to Late/Upper Coniacian (89.3 - 83.5 Ma)

• lower part of member

• bed-level stratigraphic resolution

Environment/lithology: marine; chalk

Size class: macrofossils

Collected by B. F. Mudge in 1873; reposited in the AMNH

Primary reference: E. D. Cope. 1874. Review of the Vertebrata of the Cretaceous Period found west of the Mississippi River. Bulletin of the United States Geological and Geographical Survey of the Territories, First Series 2:3-48 [M. Carrano/M. Carrano/M. Carrano]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 123571: authorized by Philip Mannion, entered by Philip Mannion on 26.01.2012

Creative Commons license: CC0 (CC0)