BOLETÍN DE LA SOCIEDAD GEOLÓGICA MEXICANA Vol 61, Núm. 2, 2006, P. 203-209 http://dx.doi.org/10.18268/BSGM2009v61n2a7

First described species of Costacopluma (Crustacea: Brachyura: Retroplumidae) from the Pacific slope, Paleocene of California, USA

Primera descripción de una especie de Costacopluma (Crustacea: Brachyura: Retroplumidae) del talud del Pacífico, Paleoceno de California, EUA

 Torrey Nyborg^1,*, Francisco J. Vega² and Harry F. Filkorn³

¹ Department of Earth and Biological Sciences, Loma Linda University, Loma Linda, CA 92350.
² Instituto de Geología, UNAM, Ciudad Universitaria, Coyoacán, México DF 04510, México.
³ Department of Invertebrate Paleontology, Natural History Museum of Los Angeles County, 900 Exposition Boulevard, Los Angeles, CA 90007.

* This email address is being protected from spambots. You need JavaScript enabled to view it..

Abstract

A new species of the brachyuran crab Costacopluma Collins and Morris, 1975, Costacopluma squiresi, is described from lower Paleocene strata of the San Francisquito Formation and upper Paleocene strata of the Santa Susana Formation of southern California. Costacopluma squiresi represents the first described species oí Costacopluma from the Pacific Coast of North America.

Keywords: Crustacea, Costacopluma, Paleocene, California.