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Aulacopleurine trilobites from the Llandovery of northwestern Canada

Published online by Cambridge University Press:  20 May 2016

J. M. Adrain  and
B. D. E. Chatterton
B. D. E. Chatterton
Affiliation:
Department of Geology, University of Alberta, Edmonton, T6G 2E3, Canada
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Abstract

Aulacopleurine trilobites from Llandovery strata of the Whittaker Formation in the central Mackenzie Mountains, Northwest Territories, Canada, include Aulacopleura andersoni n. sp., Aulacopleura? ranfordi n. sp., and Songkania smithi n. sp. The subfamily Aulacopleurinae consists of only the genera Aulacopleura Hawle and Corda, 1847, and Songkania Chang, 1974, characterized by smooth, broad early growth stages and holaspides having expanded frontal and genal areas, covered with dense caecal pits, but usually very subdued tuberculate sculpture. The relationship of Aulacopleura? ranfordi and A.? reedi Přibyl, 1947, to the remainder of species assigned to the genus is ambiguous.

Type
Research Article
Information
Journal of Paleontology , Volume 69 , Issue 2 , March 1995 , pp. 326 - 340
Copyright
Copyright © The Paleontological Society 

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