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The Permian ammonoid Demarezites Ruzhencev from the Phosphoria Formation, Idaho

Published online by Cambridge University Press:  20 May 2016

Claude Spinosa  and
W. W. Nassichuk
Claude Spinosa
Affiliation:
Department of Geosciences, Boise State University, Boise, Idaho 83725
W. W. Nassichuk
Affiliation:
Institute of Sedimentary and Petroleum Geology, Geological Survey of Canada, 3303 33 Street NW, Calgary T2L 2A7
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Abstract

Representatives of the ancestral cyclolobin ammonoid Demarezites Ruzhencev (Cyclolobidae) are known from only a few localities in North America where they occur as rare faunal elements. Demarezites furnishi n. sp. is based on a single specimen from “Middle” Permian (Roadian) strata in the Meade Peak Member of the Phosphoria Formation in eastern Idaho. Several specimens of the closely comparable Demarezites n. sp., described herein, are known from the Pipeline Shale Member of the Brushy Canyon Formation in West Texas.

Type
Research Article
Information
Journal of Paleontology , Volume 68 , Issue 5 , September 1994 , pp. 1036 - 1040
Copyright
Copyright © The Paleontological Society 

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