Where: Jefferson County, Nebraska (40.1° N, 97.2° W: paleocoordinates 37.2° N, 55.1° W)

• coordinate based on nearby landmark

When: Benton Shale Formation, Cretaceous (145.0 - 66.0 Ma)

• First, Williston suspected that the specimens come from the Cretaceous of Benton based on the matrix; then he visited the area and confirmed this claim.

Environment/lithology: marine; lithology not reported

Size class: macrofossils

Collected by Schrantz, Williston, Low in 1894

Collection methods: surface (in situ),

• Kansas University

Primary reference: S. W. Williston. 1894. A new turtle from the Benton Cretaceous. University of Kansas Quarterly 3:5-19 [E. Vlachos/E. Vlachos]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 191693: authorized by Evangelos Vlachos, entered by Evangelos Vlachos on 09.02.2018

Creative Commons license: CC BY (attribution)