Niobrara (Cretaceous of the United States)

Also known as Protostega advena type locality

Where: Logan County, Kansas (38.9° N, 101.1° W: paleocoordinates 44.4° N, 70.3° W)

• coordinate based on nearby landmark

When: Smoky Hill Chalk Member (Niobrara Formation), Senonian (89.3 - 66.0 Ma)

Environment/lithology: marine; chalk

Size class: macrofossils

Collection methods: Collection of Kansas University

Primary reference: O. P. Hay. 1908. The fossil turtles of North America. Carnegie Institution of Washington Publication 75:1-568 [M. Carrano/M. Carrano/M. Carrano]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 203742: authorized by Evangelos Vlachos, entered by Evangelos Vlachos on 23.08.2019

Creative Commons license: CC BY (attribution)

Taxonomic list

Reptilia
 Testudines - Protostegidae
"Protostega advena n. sp." = Chelosphargis advena
"Protostega advena n. sp." = Chelosphargis advena Hay 1908 sea turtle
KUVP 1209, plastron, twelve marginalia, two or three neuralia, and portions of two costal plates