Where: Niobrara County, Wyoming (43.0° N, 104.4° W: paleocoordinates 49.5° N, 79.3° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Baculites grandis ammonoid zone, Pierre Shale Formation (Montana Group), Early/Lower Maastrichtian (70.6 - 66.0 Ma)

• group of beds-level stratigraphic resolution

Environment/lithology: marine; poorly lithified, concretionary shale

Size class: macrofossils

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 191855: authorized by Matthew Clapham, entered by Matthew Clapham on 17.02.2018

Creative Commons license: CC BY (attribution)