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New chancelloriids from the Early Cambrian Sekwi Formation with a comment on chancelloriid affinities

Published online by Cambridge University Press:  20 May 2016

Robert D. Randell ,
Bruce S. Lieberman ,
Stephen T. Hasiotis  and
Michael C. Pope
Robert D. Randell
Affiliation:
Department of Geology, University of Kansas, 120 Lindley Hall, 1475 Jayhawk Boulevard, Lawrence 66045, , ,
Bruce S. Lieberman
Affiliation:
Department of Geology, University of Kansas, 120 Lindley Hall, 1475 Jayhawk Boulevard, Lawrence 66045, , ,
Stephen T. Hasiotis
Affiliation:
Department of Geology, University of Kansas, 120 Lindley Hall, 1475 Jayhawk Boulevard, Lawrence 66045, , ,
Michael C. Pope
Affiliation:
Department of Geology, Washington State University, Webster 1228, Pullman 99164,
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Abstract

Articulated scleritomes of the chancelloriids Archiasterella fletchergryllus new species and Chancelloria cf. eros Walcott, 1920 are described from the Early Cambrian (Branchian) Sekwi Formation, Mackenzie Mountains, Northwest Territories, Canada. Early diagenetic, microbially mediated lithification has resulted in unusual three-dimensional preservation of the body surface, which potentially allows consideration of the evolutionary affinities of these enigmatic organisms. Sclerites are mounted on short stalks of the integument, connected to the undersurface of the central disc, and are external to the body surface.

Type
Research Article
Information
Journal of Paleontology , Volume 79 , Issue 5 , September 2005 , pp. 987 - 996
Copyright
Copyright © The Paleontological Society 

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