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A polymorphic graptolite from concealed Tremadoc rocks of England

Published online by Cambridge University Press:  01 May 2009

A. W. A. Rushton
A. W. A. Rushton
Affiliation:
Institute of Geological Sciences, Exhibition Road, London SW7 2DE
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Summary

Abundant specimens from the middle or upper Tremadoc beds in the Napton Fields Borehole, Warwickshire, are referred to one variable species, Kiaerograptus? quasimodo sp.nov. Two-stiped forms typical of Kiaerograptus co-exist with ‘one-stiped’ forms in which the first stipe consists only of Th 11. Rare specimens with three primary thecae gave rise to forms with one, two? or three stipes.

Type
Articles
Information
Geological Magazine , Volume 118 , Issue 6 , November 1981 , pp. 615 - 622
Copyright
Copyright © Cambridge University Press 1981

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