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Upper Cambrian (Marjuman–Steptoean) trilobites from the Port Au Port Group, western Newfoundland

Published online by Cambridge University Press:  14 July 2015

Stephen R. Westrop
Stephen R. Westrop*
Affiliation:
Department of Geological Sciences, Brock University, St. Catharines, Ontario L2S 3A1, Canada
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Abstract

The Port au Port Group of western Newfoundland is a sequence of Upper Cambrian (Marjuman–Sunwaptan) shallow subtidal–supratidal carbonates and fine siliciclastics that are organized into three large scale sedimentary grand cycles. Low diversity trilobite faunas from the Marjuman and Steptoean portions (March Point and Petit Jardin Formations) include 17 species that are assigned to 16 genera; one species, Coosina kindlei, is new. Biostratigraphic analysis confirms earlier suggestions that the grand cycles boundaries record major intervals of onlap that can be recognized in other parts of North America and may be related to eustatic sea level rises.

Type
Research Article
Information
Journal of Paleontology , Volume 66 , Issue 2 , March 1992 , pp. 228 - 255
Copyright
Copyright © The Paleontological Society 

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