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Crinitograptus, a new genus of Ludlow (Silurian) graptoloid

Published online by Cambridge University Press:  14 July 2015

R. B. Rickards
R. B. Rickards*
Affiliation:
Department of Earth Sciences, University of Cambridge, Cambridge CB2 3EQ, England
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Abstract

Monograptus crinitus Wood is made the type species of a new genus, Crinitograptus; a slender, nilssoni Biozone, Ludlow graptolite typified by unusual lidded thecae. Chemically isolated material from North Germany, previously placed in the genera Barrandeograptus and Pomatograptus are placed in synonymy with C. crinitus, a rare, but relatively widely recorded form. Crinitograptus crinitus is an integral part of the globally recognized Ludlow burst of evolution in the graptoloids, and it probably evolved from a nilssoni Biozone lobograptid.

Type
Research Article
Information
Journal of Paleontology , Volume 69 , Issue 6 , November 1995 , pp. 1107 - 1111
Copyright
Copyright © The Paleontological Society 

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