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Morphometric study of the genus Ancyrodelloides (Lower Devonian, conodonts), central Nevada

Published online by Cambridge University Press:  19 May 2016

Michael A. Murphy  and
M. Kemal Cebecioglu
Michael A. Murphy
Affiliation:
Department of Earth Sciences, University of California, Riverside 92521
M. Kemal Cebecioglu
Affiliation:
Department of Earth Sciences, University of California, Riverside 92521
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Abstract

This paper presents a morphometric study of the conodont genus Ancyrodelloides. It is one of a series of such papers whose goal is to increase the precision of correlation within the Lower Devonian by refining the taxonomic basis of its biostratigraphic units. Ancyrodelloides species are confined to the delta Zone and may be used to divide it into three parts. Morphometrics verify the species rank of A. eleanorae, A. limbacarinatus, A. trigonicus, and A. transitans. Ancyrodelloides delta and A. omus are retained as species on qualitative grounds, but need larger samples for statistical evaluation. Ancyrodelloides asymmetricus and A. kutscheri are classified as varieties, but lack adequate samples.

Type
Research Article
Information
Journal of Paleontology , Volume 61 , Issue 3 , May 1987 , pp. 583 - 594
Copyright
Copyright © The Paleontological Society 

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