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Tretaspis radialis Lamont and allied species (Trilobita)

Published online by Cambridge University Press:  01 May 2009

D. Price
D. Price
Affiliation:
Sedgwick Museum, Department of Earth Sciences, University of Cambridge, Downing Street, Cambridge, CB2 3EQ
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Summary

Recently discovered specimens from the Portrane Limestone Formation of eastern Ireland are regarded as topotypes of Tretaspis radialis Lament and used to further characterize the species. The features shown by these specimens confirm the close relationship between T. radialis and forms from Zones 2–4 of the Cautleyan Stage of northern England and Wales and allow its differentiation from T. moeldenensis Cave and from another related form of low Rawtheyan age which is here erected as a new species, T. caritus sp.nov.

Type
Articles
Information
Geological Magazine , Volume 118 , Issue 3 , May 1981 , pp. 289 - 295
Copyright
Copyright © Cambridge University Press 1981

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References

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