Where: Chickasaw County, Mississippi (34.0° N, 88.9° W: paleocoordinates 37.6° N, 66.4° W)

• coordinate based on nearby landmark

• small collection-level geographic resolution

When: Prairie Bluff Chalk Formation, Late/Upper Maastrichtian (70.6 - 66.0 Ma)

• bed-level stratigraphic resolution

Environment/lithology: chalk

Size class: macrofossils

Collected by L.W. Stephenson; reposited in the USNM

Primary reference: C. W. Cooke. 1953. American Upper Cretaceous Echinoidea. United States Geological Survey Professional Paper 254-A:1-44 [W. Kiessling/U. Merkel/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 78123: authorized by Wolfgang Kiessling, entered by Uta Merkel on 29.01.2008

Creative Commons license: CC BY (attribution)