Where: Alcorn County, Mississippi (35.0° N, 88.6° W: paleocoordinates 38.1° N, 61.2° W)

When: Ripley Formation, Late/Upper Campanian to Late/Upper Campanian (83.5 - 66.0 Ma)

Environment/lithology: marine; lithology not reported

Size classes: macrofossils, mesofossils

Collected by L.W. Stephenson, (6877) in 1910; reposited in the USNM

• USNM, Cat. No. 73833 (A. grapsoideus);

Primary reference: M. J. Rathbun. 1935. Fossil Crustacea of the Atlantic and Gulf Coastal Plain. Geological Society of America Special Paper (2)1-160 [C. Schweitzer/S. Yost]more details

Purpose of describing collection: paleoecologic analysis

PaleoDB collection 142464: authorized by Carrie Schweitzer, entered by Samantha Yost on 11.04.2013

Creative Commons license: CC BY (attribution)