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Evolution and classification of some Ordovician Calymenina (Trilobita)

Published online by Cambridge University Press:  01 May 2009

J.-L. Henry
J.-L. Henry
Affiliation:
Laboratoire de Paléontologie et de Stratigraphie, Institut de Géologie de l'Université, Avenue du Général Leclerc, 35042 Rennes Cedex, France
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Summary

The classification of the genera Plaesiacomia Hawle & Corda, 1847, Kerfornella Henry, 1976, Colpocoryphe Novák in Perner, 1918, Salterocoryphe Hammann, 1977 and Neseuretus Hicks, 1873, is discussed. Plaesiacomia and Kerfornella are attributed to the Homalonotidae (sub family Kerfornellinae nov.), while Colpocoryphe, Salterocoryphe, and Neseuretus are regarded as belonging to the Calymenidae. The author's opinion is mainly based on the morphology and evolution of the coaptative devices, and on the morphology of the hypostoma.

Type
Articles
Information
Geological Magazine , Volume 117 , Issue 4 , July 1980 , pp. 351 - 362
Copyright
Copyright © Cambridge University Press 1980

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