Where: Logan County, Kansas (38.8° N, 100.9° W: paleocoordinates 42.1° N, 67.4° W)

• coordinate based on nearby landmark

• local area-level geographic resolution

When: Smoky Hill Chalk Member (Niobrara Formation), Late/Upper Santonian (85.8 - 83.5 Ma)

• group of beds-level stratigraphic resolution

Environment/lithology: offshore; lithified chalk

Size class: macrofossils

Collected by H. T. Martin in 1897; reposited in the AMNH

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 203741: authorized by Evangelos Vlachos, entered by Evangelos Vlachos on 23.08.2019

Creative Commons license: CC BY (attribution)