Perdue Hill [Suwannee Fm] (Oligocene of the United States)

Where: Monroe County, Alabama (31.5° N, 87.5° W: paleocoordinates 31.8° N, 81.0° W)

When: Byram Marl Formation (Vicksburg Group), Early/Lower Oligocene (33.9 - 28.4 Ma)

Environment/lithology: marine; marl

Size classes: macrofossils, mesofossils

• a left manus, incomplete and with the inner surface lacking (C. alabamensis);

Collected by Aldrich; reposited in the USNM

Collection methods: surface (float), surface (in situ),

• COLLECTOR: T.H. Aldrich. REPOSITORY: USNM (formerly reposited at Johns Hopkins University).

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 143392: authorized by Carrie Schweitzer, entered by Samantha Yost on 23.04.2013, edited by Austin Hendy

Creative Commons license: CC BY (attribution)

Taxonomic list

• COVERAGE: Includes echinoids and decapods (a left manus); molluscs probably also present. NOMENCLATURE: Authoritative publications with species-resolution identifications, but with antiquated nomenclature.
 Decapoda - Portunidae
Callinectes alabamensis n. sp. Rathbun 1935 swimming crab
 Arbacioida - Arbaciidae
"Coelopleurus aldrichi n. sp." = Arbia aldrichi
"Coelopleurus aldrichi n. sp." = Arbia aldrichi Clark and Twitchell 1915 sea urchin