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Giganticlavus, a new genus of Pennsylvanian edrioasteroid from North America

Published online by Cambridge University Press:  20 May 2016

Colin D. Sumrall  and
Arthur L. Bowsher
Colin D. Sumrall
Affiliation:
7481 E. Camino Santo, Scottsdale, Arizona 85260
Arthur L. Bowsher
Affiliation:
2707 Gaye Drive, Roswell, NM 88201-4328
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Abstract

A new genus and two new species of late Paleozoic edrioasteroids, Giganticlavus bennisoni and G. gelasinus, are described from the Early Pennsylvanian of Oklahoma and New Mexico. Giganticlavus differs from other clavate edrioasteroids by its large size, extreme ambulacral length and ambital overlap, extreme thickness of interambulacral and recumbent zone plates, and the tessellate nature of the recumbent zone plating. The extreme length of ambulacra and thickness of the plating are interpreted as adaptations for increased size and rigidity.

Type
Research Article
Information
Journal of Paleontology , Volume 70 , Issue 6 , November 1996 , pp. 986 - 993
Copyright
Copyright © The Paleontological Society 

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