Where: Calvert County, Maryland (39.6° N, 75.9° W: paleocoordinates 39.8° N, 72.3° W)

When: Calvert Formation (Chesapeake Group), Burdigalian to Burdigalian (20.4 - 11.6 Ma)

Environment/lithology: marine; lithology not reported

Size classes: macrofossils, mesofossils

• one movable finger of large specimen (C. irroratus);

Collected by Martin Burkenroad; reposited in the USNM

• one movable finger of large specimen, Cat. No. 372808 (C. irroratus);

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: taxonomic analysis

PaleoDB collection 144136: authorized by Carrie Schweitzer, entered by Samantha Yost on 01.05.2013

Creative Commons license: CC BY (attribution)