Where: Tippah County, Mississippi (34.6° N, 88.8° W: paleocoordinates 37.8° N, 61.6° 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.C. Johnson, (542) in Oct. 24, 1888; reposited in the USNM

• USNM, Cat. No. 73800 (M. mortoni); Cat. No. 73732 (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 142006: authorized by Carrie Schweitzer, entered by Samantha Yost on 04.04.2013

Creative Commons license: CC BY (attribution)