Where: North Dakota (46.2° N, 104.0° W: paleocoordinates 52.6° N, 76.9° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Pierre Shale Formation, Maastrichtian (72.1 - 66.0 Ma)

• group of beds-level stratigraphic resolution

Environment/lithology: marine; poorly lithified shale

Size class: macrofossils

Collected by Barnum Brown in 1931; reposited in the USNM

Primary reference: R. M. Feldmann, C. E. Schweitzer, and W. R. Wahl. 2008. Ekalakia (Decapoda: Brachyura): The preservation of eyes links Cretaceous crabs to Jurassic ancestors. Journal of Paleontology 82(5):1030-1034 [C. Schweitzer/C. Schweitzer]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 191854: authorized by Matthew Clapham, entered by Matthew Clapham on 17.02.2018

Creative Commons license: CC BY (attribution)