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Document Type

Research

Keywords

Crinoidea, Cranocrinus, feeding, respiration; Greenleaf Lake, Muskogee County, Oklahoma; Island of Timor, Indonesia; Ural Mountains, U.S.S.R.; Brentwood Limestone Member = Braggs Member (part), Sausbee Formation, Morrowan, Lower Pennsylvanian; Lower Permian; Upper Permian

Abstract

The cladid inadunate genus Cranocrinus Wanner is typically from Upper Permian rocks of the Island of Timor, Indonesia, and has been reported from Lower Permian rocks of the Ural Mountains of Russia. Arendt (1970) has demonstrated that juvenile C. praestans lacks radials (is pseudomonocyclic) while adult specimens have radials (are dicyclic). Both conditions are noted for C. eximius n. sp. from Morrowan (Lower Pennsylvanian) rocks of Oklahoma and are described herein. Possible methods of feeding and respiration are considered in the discussion of Cranocrinus.

Publication Date

March 1978

Journal Title

Proceedings of the Iowa Academy of Science

Volume

85

Issue

1

First Page

21

Last Page

24

Copyright

© Copyright 1978 by the Iowa Academy of Science, Inc.

Language

EN

File Format

application/pdf

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