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Strepsidura ficus (Gabb) of Harris (1895), Eocene of Texas: a volutid gastropod species distinct from Whitneya ficus Gabb, 1864, Eocene of California

Published online by Cambridge University Press:  20 May 2016

Charles R. Givens
Affiliation:
Earth Science Department, Nicholls State University, Thibodaux, Louisiana 70310
Christopher L. Garvie
Affiliation:
P.O. Box 80189, Austin, Texas 78727-0189

Abstract

Morphometric analysis demonstrates that Strepsidura ficus (Gabb) of Harris (1895), from the lower middle Eocene Reklaw and Queen City Formations of Texas, is specifically distinct from Whitneya ficus Gabb (1864) of the Californian Eocene. Accordingly, the new name Strepsidura harrisi is proposed for the Texas species. Strepsidura s.s. is represented in North America by S. ficus (Gabb), S. harrisi n. sp., and an unnamed species closely related to S. harrisi in the upper Paleocene Sequin Formation of Texas. Strepsidura s.s. apparently originated in the Old World Tethyan Realm during the Paleocene and subsequently spread to North America.

Type
Research Article
Copyright
Copyright © The Paleontological Society 

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