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Pteropods (Mollusca: Gastropoda) from Tertiary formations of Washington and Oregon

Published online by Cambridge University Press:  19 May 2016

Richard L. Squires
Richard L. Squires*
Affiliation:
Department of Geological Sciences, California State University, Northridge 91330
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Abstract

Praehyalocylis cretacea (Blanckenhorn, 1889), a pteropod previously known only from upper Eocene to middle Miocene strata in Europe and Turkey, is reported for the first time in similar age rocks in the northwestern United States. Of the 238 specimens, most occur as molds and casts in concretions in deep-water deposits from the Keasey Formation in Oregon, and from the Quimper Sandstone, Blakeley Formation, Pysht Formation, and Astoria Formation of Washington. Praehyalocylis has not been reported previously from the Western Hemisphere.

Clio berglundi n. sp. and C. goederti n. sp. are reported from upper Oligocene to lower Miocene rocks in Washington. Eleven specimens were found mostly as internal molds in concretions in deep-water deposits of the Lincoln Creek, Pysht, and Astoria Formations of Washington. Cenozoic species of Clio have not been reported previously from the West Coast of the United States.

Type
Research Article
Information
Journal of Paleontology , Volume 63 , Issue 4 , July 1989 , pp. 443 - 448
Copyright
Copyright © The Paleontological Society 

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