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Permian Polyplacophora (Mollusca) from Nevada, Utah, and Arizona

Published online by Cambridge University Press:  14 July 2015

R.D. Hoare
Affiliation:
Department of Geology, Bowling Green State University, Bowling Green, Ohio 43403
Leo P. Plas Jr.
Affiliation:
71233 Highway 47, Mist, Oregon 97016
T. E. Yancey
Affiliation:
Department of Geology, Texas A & M University, College Station 77843

Abstract

Rare to abundant silicified polyplacophoran faunas occur in the late Wolfcampian Bird Spring Formation and the Leonardian Pequop and Loray Formations in Nevada, the Leonardian Arcturus Formation in Utah, and the early Leonardian Ft. Apache Limestone Member of the Supai Formation in Arizona. The faunas associated with the polyplacophorans are dominated by molluscs. New species include Gryphochiton distinctus, Acutichiton gracilis, A. nevadensis, and Arcochiton richardsoni. Traces of color patterns are present on Arcochiton richardsoni.

Type
Research Article
Copyright
Copyright © The Paleontological Society

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