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The inadunate crinoid genus Cryphiocrinus Kirk

Published online by Cambridge University Press:  01 May 2009

Harrell L. Strimple
Harrell L. Strimple
Affiliation:
Dept. of Geology, The University of Iowa, Iowa City, Iowa, USA
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Summary

Cryphiocrinus Kirk is a genus which may possess a delicate stem, or may lose the stem as an adult, making it essentially eleutherozoic. C. girtyi Kirk, type species, is documented with certainty from Chesterian rocks of Oklahoma and Arkansas for the first time. C. rotundus Kirk is reported from the Renault Formation of Illinois and a possible occurrence in the Pride Mountain Formation of Alabama is noted. The genus has previously been recognized in Chesterian, Upper Mississippian, (Lower Carboniferous), strata exposed in West Virginia, Kentucky and Oklahoma, U.S.A. Possible affinity with Hosieocrinus Wright from the Lower Limestone Group (Visean) in Scotland is discussed.

Type
Articles
Information
Geological Magazine , Volume 114 , Issue 3 , May 1977 , pp. 209 - 214
Copyright
Copyright © Cambridge University Press 1977

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