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Late Devonian ammonoids from Ohio and adjacent states

Published online by Cambridge University Press:  14 July 2015

M. R. House
Affiliation:
University of Hull, England
Mackenzie Gordon Jr.
Affiliation:
U.S. Geological Survey, Washington, D.C. 20560
W. J. Hlavin
Affiliation:
Appalachian Exploration Inc., Canton, Ohio 44709

Abstract

Three late Devonian ammonoid-bearing levels are described from the area of Cleveland, Ohio. These appear to represent the German Platyclymenia, Clymenia and Wocklumeria Stufen, clear evidence for which has been lacking previously in eastern North America. The lowest level, around the base of the Cleveland Shale, yields Sporadoceras, Cyrtoclymenia, Platyclymenia and a new species, Pleuroclymenia (?) ohioense. The middle level, near the top of the Cleveland Shale, bears Cymaclymenia, Sporadoceras and Prionoceras. The highest level, just above the base of the Bedford Shale, has Prionoceras quadripartitum. This species, and a fauna of the basal Bedford, have been located also in the area of Columbus, Ohio. An Epiwocklumeria (?) sp. is recorded from Indiana. Attention is drawn to the international importance of the late Famennian and Lower Carboniferous ammonoid sequence which can now be recognized in Ohio.

Information

Type
Research Article
Copyright
Copyright © The Journal of Paleontology 

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