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Silicified gastropods from the Permian Phosphoria rock complex of Wyoming

Helen A. Kulas and Roger L. Batten
Silicified gastropods from the Permian Phosphoria rock complex of Wyoming
Contributions to Geology (May 1997) 31 (2): 33-58

Abstract

This is a study of silicified gastropods from carbonate strata of the Phosphoria rock complex of Lower to Middle Permian (Leonardian-Wordian) age in Wyoming. Twenty-five collections from 13 locations in western and central Wyoming were studied. Collections are from the Grandeur, Franson and Ervay Members of the Park City Formation, the lower member of the Shedhorn Sandstone and limestone tongues of the Phosphoria Formation. Gastropods are a minor but relatively diverse component of the faunas sampled. One new genus, Shedhornia, is recognized. Seven of the 55 species are described as new: Euphemites fremontensis, Bellerophon (Pharkidonotus) altitropis, Apachella boydi, Lamellospira alveozona, ?Gyronema clausepeakensis, Platyceras (Platyceras) yochelsoni, and Shedhornia ornata. Many taxa are indeterminate at particular taxonomic levels due to poor preservation. Several unexpected resemblances to Pennsylvanian faunas are noted.


ISSN: 0010-7980
Coden: WUGGAO
Serial Title: Contributions to Geology
Serial Volume: 31
Serial Issue: 2
Title: Silicified gastropods from the Permian Phosphoria rock complex of Wyoming
Affiliation: 412 Melrose Street, Glen Ellyn, IL, United States
Pages: 33-58
Published: 199705
Text Language: English
Publisher: University of Wyoming, Laramie, WY, United States
References: 64
Accession Number: 1998-013121
Categories: Invertebrate paleontology
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus. incl. 4 plates
N41°00'00" - N45°00'00", W111°04'60" - W104°04'60"
Secondary Affiliation: 77 E. Missouri, USA, United States
Country of Publication: United States
Secondary Affiliation: GeoRef, Copyright 2017, American Geosciences Institute.
Update Code: 199806
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