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Silurian trilobites from arctic Canada

Published online by Cambridge University Press:  01 May 2009

A. T. Thomas  and
G. M. Narbonne
A. T. Thomas
Affiliation:
Department of Geological Sciences, University of Aston in Birmingham, Gospa Green, Birmingam B4 7ET
G. M. Narbonne
Affiliation:
Geology Department, University of Ottawa, Ottawa, Canada, K1N 6N5
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Summary

Trilobites of upper Ludlow age are described from Member A of the Read Bay Formation on Cornwallis Island. Four new species are represented: Helokybe spio gen. et sp.nov. (Dechenellinae), Encrinurus hyperboreus sp. nov., Kailia? capra sp.nov. (Encrinurinae) and Hemiarges echinatus sp.nov. Other taxa present are: an effaced scutelluid; Cyphaspis sp.; a warburgelline; two more encrinurids; two other forms of Hemiarges. The trilobites occur in sediments indicative of a shallow subtidal environment, with the exception of the warburgelline which occurs in sediments deposited under deeper subtidal conditions below storm wave-base.

Type
Articles
Information
Geological Magazine , Volume 116 , Issue 1 , January 1979 , pp. 1 - 19
Copyright
Copyright © Cambridge University Press 1979

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