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Review of the camerate crinoid Closterocrinus elongatus Hall from the Silurian of New York

Published online by Cambridge University Press:  14 July 2015

George C. McIntosh
George C. McIntosh*
Affiliation:
Rochester Museum and Science Center, 657 East Avenue, Rochester, New York 14603
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Abstract

Closterocrinus elongatus Hall, 1852, long assigned to the cladid inadunate crinoid family Ampheristocrinidae (=Euspirocrinidae), has been found to possess pinnulate biserial arms and a cup composed of four exsert basals, five radials, a primanal above the radial circlet, and fixed primibrachials and secundibrachials. Accordingly, this species is herein reassigned to the monobathrid camerate crinoid family Paramelocrinidae.

Type
Research Article
Information
Journal of Paleontology , Volume 61 , Issue 6 , November 1987 , pp. 1216 - 1221
Copyright
Copyright © The Paleontological Society 

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