Where: Pennington County, South Dakota (43.7° N, 102.8° W: paleocoordinates 49.7° N, 72.1° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Pierre Shale Formation (Montana Group), Late/Upper Campanian to Late/Upper Campanian (83.5 - 66.0 Ma)

• No stratigraphic information. Bishop (1981) found Dakotacancer from the Late Campanian in the Cheyenne valley, but the species extends to the Early Maastrichtian as well.

• group of beds-level stratigraphic resolution

Environment/lithology: marine; lithified shale

Size class: macrofossils

Collected by W.H. Over in 1914; reposited in the USNM

• Repository: also at University of South Dakota

Primary reference: M. J. Rathbun. 1917. New species of South Dakota Cretaceous crabs. Proceedings of the United States National Museum 52(2182):385-391 [C. Schweitzer/S. Yost/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 134955: authorized by Carrie Schweitzer, entered by Samantha Yost on 19.10.2012

Creative Commons license: CC BY (attribution)