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The occurrence of the Ordovician brachiopod Heterorthis alternata (J. de C. Sowerby) in the topmost Onnian of the type Caradoc area

Published online by Cambridge University Press:  01 May 2009

D. A. T. Harper
D. A. T. Harper
Affiliation:
Department of Geology, Queen's University, Belfast BT7 1NN
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Summary

The orthidine brachiopod Heterorthis alternata (J. de C. Sowerby 1839) is here recorded from the River Onny Cliff Section at an horizon high in the Onnia superba Zone of the Onnian Stage. Previously it had only been recorded from rocks of Upper Longvillian, Marshbrookian and Actonian age of South Salop and of Upper Caradoc age of Morocco.

Type
Articles
Information
Geological Magazine , Volume 115 , Issue 4 , July 1978 , pp. 301 - 304
Copyright
Copyright © Cambridge University Press 1978

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References

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