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A new genus of cryptic lucinid? bivalve from Eocene cold seeps and turbidite-influenced mudstone, western Washington

Published online by Cambridge University Press:  20 May 2016

Louella R. Saul ,
Richard L. Squires  and
James L. Goedert
Louella R. Saul
Affiliation:
Natural History Museum of Los Angeles County, 900 Exposition Boulevard, Los Angeles, California 90007
Richard L. Squires
Affiliation:
Department of Geological Sciences, California State University, Northridge 91330-8266, and 15207 84th Avenue Ct. NW, Gig Harbor, Washington 98329-8765
James L. Goedert
Affiliation:
Museum Associate, Vertebrate Paleontology, Natural History Museum of Los Angeles County
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Abstract

Two previously undescribed species of Bivalvia of Eocene age are herein tentatively considered to belong to the family Lucinidae because of their ligament areas and elongated anterior adductor scars. Both species are elongate for a lucinid, have edentulous hinges, striated muscle scars, and are placed in the new genus Cryptolucina. Both are found in the Humptulips Formation of middle to late Eocene age in western Washington, and both Cryptolucina megadyseides new species and C. elassodyseides new species are associated with deep-water, cold-seep limestone. Cryptolucina megadyseides is also associated with turbiditic mudstone.

Type
Research Article
Information
Journal of Paleontology , Volume 70 , Issue 5 , September 1996 , pp. 788 - 794
Copyright
Copyright © The Paleontological Society 

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