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The Evolution of the Earliest Llandovery monograptids

Published online by Cambridge University Press:  01 May 2009

Jana Hutt  and
R. B. Rickards
Jana Hutt
Affiliation:
Department of Geology, University of Leicester
R. B. Rickards
Affiliation:
Sedgwick Museum, Cambridge, CB2 3EQ
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Abstract

The incommodus, atavus and cyphus monograptid groups appear more or less simultaneously in the atavus Zone. The atavus and cyphus groups are related, one of these probably giving rise to the later tenuis group of monograptids, Possible roots of these groups and relationships with later monograptids are discussed. Monograptus strachani sp. nov. is proposed to replace the name M. incommodus sensu Elles & Wood.

Type
Articles
Information
Geological Magazine , Volume 107 , Issue 1 , January 1970 , pp. 67 - 77
Copyright
Copyright © Cambridge University Press 1970

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References

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