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Type species of the basal Ibexian trilobite Corbinia Walcott, 1924

Published online by Cambridge University Press:  14 July 2015

Stephen R. Westrop  and
Rolf Ludvigsen
Stephen R. Westrop
Affiliation:
Department of Geology, University of Toronto, Toronto, Ontario M5S 1A1, Canada
Rolf Ludvigsen
Affiliation:
Department of Geology, University of Toronto, Toronto, Ontario M5S 1A1, Canada
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Abstract

The type species of the eurekiid trilobite Corbinia Walcott, C. horatio Walcott, 1924, possesses very short palpebral lobes located opposite 2p glabellar lobe. The palpebral lobes of species of Eurekia Walcott and of Corbinia apopsis Winston and Nicholls, 1967, are considerably longer and located opposite 1p and 2p glabellar lobes. Corbinia is here restricted to the type species, and C. apopsis is assigned to Eurekia. Corbinia horatio occurs in the Basal Silty Member of the Survey Peak Formation of southern Alberta and appears to be confined to the lower part of the Eurekia apopsis Subzone of the Saukia Zone (basal Ibexian).

Type
Research Article
Information
Journal of Paleontology , Volume 60 , Issue 1 , January 1986 , pp. 68 - 75
Copyright
Copyright © The Journal of Paleontology 

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