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Early Silurian inadunate crinoids (Brassfield Formation, Ohio)

Published online by Cambridge University Press:  19 May 2016

William I. Ausich
William I. Ausich*
Affiliation:
Department of Geology and Mineralogy, 125 South Oval Mall, The Ohio State University, Columbus 43210-1398
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Abstract

Eight Early Silurian inadunate crinoids are described. These include: a pisocrinid, genus and species undetermined; (?)Myelodactylus sp.; Kanabinocrinus thyaros n. gen., n. sp.; Euspirocrinus heliktos n. sp.; (?)Euspirocrinus sp.; Eoparisocrinus siluricus n. comb. (n. gen.); Dendrocrinus daytonensis n. sp.; and dendrocrinid, genus and species undetermined. Parisocrinus siluricus, Parisocrinus mulletensis, and Euspirocrinus obconicus are all reassigned to Eoparisocrinus. Parisocrinus is restricted to members of Devonian and Mississippian age. The genus Parisocrinus is discussed, and its type species P. perplexus is illustrated.

Pisocrinid, genus and species undetermined, (?)Myelodactylus sp., and Kanabinocrinus thyaros represent the oldest member of the family in which each belongs. The phylogenetic relationships of these and other taxa are discussed.

Type
Research Article
Information
Journal of Paleontology , Volume 60 , Issue 3 , May 1986 , pp. 719 - 735
Copyright
Copyright © The Paleontological Society 

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