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New upper Paleocene species of the bivalve Plicatula from southern California

Published online by Cambridge University Press:  14 July 2015

Richard L. Squires  and
Louella R. Saul
Richard L. Squires
Affiliation:
Department of Geological Sciences, California State University, Northridge 91330-8266,
Louella R. Saul
Affiliation:
Invertebrate Paleontology Section, Natural History Museum of Los Angeles County, 900 Exposition Boulevard, Los Angeles, California 90007,
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Abstract

Three new species of the shallow-marine, warm-water bivalve Plicatula are reported from the upper Paleocene Santa Susana Formation of southern California. Plicatula simiensis new species is from the middle part of the formation on the south side of Simi Valley and occurs as a displaced specimen in deep-marine turbidites. Plicatula lapidicina new species and P. trailerensis new species are both from coralline-algal-rich muddy siltstone just beneath a nearshore, coralline-algal limestone interval in the upper part of the formation in the Santa Ynez Canyon area, east-central Santa Monica Mountains. These three new species represent the first late Paleocene records of genus Plicatula on the west coast of North America and the first Paleocene records of this genus in southern California.

Type
Research Article
Information
Journal of Paleontology , Volume 72 , Issue 6 , November 1998 , pp. 1024 - 1029
Copyright
Copyright © The Paleontological Society 

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