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Speocarcinus berglundi n. sp. (Decapoda: Brachyura), a new crab from the Imperial Formation (late Miocene-late Pliocene) of southern California

Published online by Cambridge University Press:  14 July 2015

Annette B. Tucker ,
Rodney M. Feldmann  and
Charles L. Powell II
Annette B. Tucker
Affiliation:
Department of Geology, Kent State University, Kent, Ohio 44242
Rodney M. Feldmann
Affiliation:
Department of Geology, Kent State University, Kent, Ohio 44242
Charles L. Powell II
Affiliation:
U.S. Geological Survey, Branch of Paleontology and Stratigraphy, M/S 915, 345 Middlefield Road, Menlo Park, California 94025
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Abstract

Speocarcinus berglundi n. sp. is described from the Imperial Formation in Riverside County, California. Although the Imperial Formation spans late Miocene through late Pliocene time, the part of the unit that bears crabs has been radiometrically dated as late Miocene. The identification of a new species was based upon comparison with four extant species and represents the first documented fossil occurrence for the genus. The occurrence of this new species suggests that the genus may have originated in the Pacific and, during the Miocene, dispersed through the Isthmus of Panama to the Caribbean. Two of the specimens exhibit parasitism by Bopyridae (Isopoda).

Type
Research Article
Information
Journal of Paleontology , Volume 68 , Issue 4 , July 1994 , pp. 800 - 807
Copyright
Copyright © The Paleontological Society 

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