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Lockeia, not Pelecypodichnus

Published online by Cambridge University Press:  19 May 2016

Christopher G. Maples  and
Ronald R. West
Christopher G. Maples
Affiliation:
Kansas Geological Survey, Lawrence 66046-2598
Ronald R. West
Affiliation:
Department of Geology, Kansas State University, Manhattan 66506
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Abstract

The nomenclatorial history of the ichnogenera Lockeia and Pelecypodichnus has been confused by duality during the past 20 years. Many authors presume Pelecypodichnus is correct because Lockeia is a nomen oblitum. This presumption is rejected on both objective and subjective grounds. First, Lockeia is not a nomen oblitum. Two major gaps in the citational history of Lockeia exist, the first one of 35 years duration and the second of 43 years duration. Thus, no 50-year gap exists in the valid use of the name Lockeia. Second, the Committee on Zoological Nomenclature was not petitioned to declare Lockeia a nomen oblitum during the period of time that the nomen oblitum concept was in effect. Third, the name Pelecypodichnus implies a specific trace-maker for the trace—a practice we, and others, judge should be avoided. Fourth, topotype specimens and the lectotype of Lockeia are available for study. Fifth, even many of those authors who use Pelecypodichnus instead of Lockeia commonly note the existence of Lockeia as a synonymous generic name. Thus, use of Lockeia by numerous authors in the past 20 years results in no confusion or destabilization of the generic-level taxonomy. Lockeia, the senior synonym of Pelecypodichnus, has been used by numerous authors, is well understood, and therefore should be used instead of Pelecypodichnus.

Type
Research Article
Information
Journal of Paleontology , Volume 63 , Issue 5 , September 1989 , pp. 694 - 696
Copyright
Copyright © The Paleontological Society 

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