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A new species of Vorticifex (Gastropoda: Planorbidae) from late Cenozoic lake deposits, Nevada

Published online by Cambridge University Press:  20 May 2016

James R. Firby
James R. Firby*
Affiliation:
Department of Geological Sciences, Mackay School of Mines, University of Nevada, Reno 89557
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Abstract

A new species of planorbid gastropod, Vorticifex taylori, is described from the Late Miocene (Clarendonian) Truckee Formation at its type area in Churchill County, Nevada. Comparison with younger and older species assigned to Vorticifex indicates a high degree of morphologic variation within the genus as contrasted with relatively conservative intraspecific variation, which may reflect ecologic similarities at discrete times during the development of the Great Basin subprovince of the Basin and Range physiographic province.

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Type
Research Article
Information
Journal of Paleontology , Volume 67 , Issue 3 , May 1993 , pp. 370 - 374
Copyright
Copyright © The Paleontological Society 

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