Title

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

Publication Title

Journal of Crustacean Biology

Publication Date

2007

Document Type

Article

DOI

http://dx.doi.org/10.1651/S-2712.1

Keywords

Costacopluma, Alabama, retroplumid crabs

Disciplines

Earth Sciences | Geology | Paleontology

Abstract

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 ofCostacopluma 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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