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A Spiral Brachidium in the Jurassic Chonetoid Brachiopod Cadomella

Published online by Cambridge University Press:  01 May 2009

R. Cowen  and
M. J. S. Rudwick
R. Cowen
Affiliation:
Sedgwick Museum, Downing Street, Cambridge.
M. J. S. Rudwick
Affiliation:
Sedgwick Museum, Downing Street, Cambridge.
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Abstract

A spiral brachidium has been discovered in the Lower Jurassic brachiopod Cadomella, which is generally regarded as the last representative of the Chonetidina. Cadomella is transferred to the Koninckinidae, which are considered to be spire-bearing Chonetidina rather than aberrant Spiriferida. This interpretation implies another independent evolution of spiralia within the Brachiopoda.

Type
Articles
Information
Geological Magazine , Volume 103 , Issue 5 , October 1966 , pp. 403 - 406
Copyright
Copyright © Cambridge University Press 1966

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References

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