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The Development of a Diplograptid from the Platteville Limestone

Published online by Cambridge University Press:  01 May 2009

Margaret Walker
Margaret Walker
Affiliation:
The Sedgwick Museum, Cambridge.
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Abstract

This paper describes the development from the initial prosicula of the rhabdosome of Diplograptus cf. (Amplexograptus) maxwelli Decker. Points of comparison with other diplograptid astogenies are noted. Evidence about the structure of the interthecal septum is brought forward and so stages in the formation of one thecal segment can be defined. Mention is made of some abnormal specimens.

Type
Articles
Information
Geological Magazine , Volume 90 , Issue 1 , February 1953 , pp. 1 - 16
Copyright
Copyright © Cambridge University Press 1953

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References

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