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First Silurian conulariids from Paraguay

Published online by Cambridge University Press:  14 July 2015

Loren E. Babcock ,
Jane Gray ,
Arthur J. Boucot ,
Gregory T. Himes  and
Paul K. Siegele
Loren E. Babcock
Affiliation:
1Kansas Geological Survey, 1930 Constant Avenue, The University of Kansas, Lawrence, 66047 and Department of Geology, The University of Kansas, Lawrence 66045
Jane Gray
Affiliation:
2Department of Biology, University of Oregon, Eugene 97403
Arthur J. Boucot
Affiliation:
3Department of Zoology, Oregon State University, Corvallis 97331
Gregory T. Himes
Affiliation:
4Texaco Overseas Holdings Inc., % Amoseas, 237 Orchard Point Post Office, Singapore, Republic of Singapore 9123
Paul K. Siegele
Affiliation:
5Texaco Overseas Holdings Inc., 4800 Fournace Place, Bellaire, Texas 77401
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Abstract

Two new conulariid species, Conularia clarkei Babcock and C. paraguayensis Babcock from the Vargas Peña Shale, are the first Silurian conulariids to be described from Paraguay. They increase to three the number of Silurian species to be described from South America. The concept of Conularia Miller in Sowerby, 1820, is emended. It includes as junior synonyms Conularia (Plectoconularia) Bouček, 1939, Diconularia Sinclair, 1952, and Yangoconularia Xu and Li, 1985. The age of the Vargas Peña Shale has long been disputed, but conclusions based on organic-walled microfossils indicate an Early Silurian (Llandoverian) age for the unit.

Type
Research Article
Information
Journal of Paleontology , Volume 64 , Issue 6 , November 1990 , pp. 897 - 902
Copyright
Copyright © The Journal of Paleontology 

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