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International Commission on Zoological Nomenclature

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Case 3700

Overview

Case 3700: Diplodocus Marsh, 1878 (Dinosauria, Sauropoda): proposed designation of D. carnegii Hatcher, 1901 as the type species

Status of Case:Resolved (Opinion Issued)
Date Published:03/2016
Authors: Tschopp, E., Mateus, O.
Volume and Issue:73/1
Pagination:
Keywords: Nomenclature, taxonomy, Dinosauria, Sauropoda, Diplodocidae, Diplodocus, Diplodocus longus, Diplodocus carnegii, U.S.A., Upper Jurassic Morrison Formation
Taxonomic Group(s): Dinosauria, Sauropoda
Abstract:

The purpose of this application, under Articles 78.1 and 81.1 of the Code, is to replace Diplodocus longus Marsh, 1878 as the type species of the sauropod dinosaur genus Diplodocus by the much better represented D. carnegii Hatcher, 1901, due to the undiagnosable state of the holotype of D. longus (YPM 1920, a partial tail and a chevron). The holotype of D. carnegii, CM 84, is a well-preserved and mostly articulated specimen. Casts of it are on display in various museums around the world, and the species has generally been used as the main reference for studies of comparative anatomy or phylogeny of the genus. Both species are known from the Upper Jurassic Morrison Formation of the western United States. The genus Diplodocus is the basis for the family-level taxa Diplodocinae Marsh, 1884, Diplodocidae Marsh, 1884, Diplodocimorpha Marsh, 1884 (Calvo & Salgado, 1995) and Diplodocoidea Marsh, 1884 (Upchurch, 1995). It is also a specifier of at least 10 phylogenetic clades. With the replacement of D. longus by D. carnegii as type species, Diplodocus could be preserved as a taxonomic name with generally accepted content. Taxonomic stability of the entire clade Diplodocoidea, and the proposed definitions of several clades within Sauropoda, could be maintained.

Full Text:

https://doi.org/10.21805/bzn.v73i1.a22

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Opinions

Opinion 2425: Diplodocus Marsh, 1878 (Dinosauria, Sauropoda): Diplodocus longus Marsh, 1878 maintained as the type species
Status of Case:
Date Published:12/2018
Authors: ICZN
Volume and Issue:75/
Pagination:
Keywords: Nomenclature, taxonomy, Dinosauria, Sauropoda, Diplodocidae, Diplodocus, Diplodocus longus, Diplodocus carnegii, U.S.A., Upper Jurassic Morrison Formation
Taxonomic Group(s):
Abstract:

The International Commission on Zoological Nomenclature has declined to use its plenary power to replace the type species of the sauropod dinosaur genus Diplodocus Marsh, 1878 with D. carnegii Hatcher, 1901.

Full Text:

http://dx.doi.org/10.21805/bzn.v75.a062

External Links: Google Scholar BibTex XML RIS

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