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Rhaphidograptus, a new Graptolite Genus.

Published online by Cambridge University Press:  01 May 2009

O. M. B. Bulman
O. M. B. Bulman
Affiliation:
Sedgwick Museum, Cambridge.
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Extract

THE genus Dimorphograptus was founded by Lapworth (1876) for uni-biserial graptolites transitional between Diplograptus and Monograptus, evolution along what is now termed the “ Monograptid trend ” leading to the production of a uniserial proximal portion of the rhabdosome. Akidograptus has been proposed more recently by K. A. Davies for an early stage in the Dimorphograptus series, represented by the species Ak. acuminatus (Nicholson) and Ak. ascensus Davies.

Type
Original Articles
Information
Geological Magazine , Volume 73 , Issue 1 , January 1936 , pp. 19 - 26
Copyright
Copyright © Cambridge University Press 1936

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References

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