First Report of Costacopluma Collins and Morris, 1975 (Decapoda: Brachyura: Retroplumidae) from the Eocene of Alabama, U.S.A. | Zendy

Rodney M. Feldmann | Zendy; Roger W. Portell | Zendy

Open Access

First Report of Costacopluma Collins and Morris, 1975 (Decapoda: Brachyura: Retroplumidae) from the Eocene of Alabama, U.S.A.

Author(s) -

Rodney M. Feldmann,

Roger W. Portell

Publication year - 2007

Publication title -

journal of crustacean biology

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.509

H-Index - 54

eISSN - 1937-240X

pISSN - 0278-0372

DOI - 10.1651/s-2712.1

Subject(s) - biology , genus , decapoda , range (aeronautics) , zoology , paleontology , ecology , crustacean , materials science , composite material

Nine specimens of retroplumid crabs collected from the late early or early middle Eocene Tallahatta Formation in southern Alabama form the basis for description of a new species, Costacopluma grayi. The discovery confirms the extension of the range of the genus into the Eocene and represents the first occurrence of Costacopluma in the United States. As a result of the geologic range extension, the genus is now known to be contemporary with two other retroplumid genera, Retrocypoda, and Retropluma.

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