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Case 3779

Overview

Case 3779: Petalodus Owen, 1841 (Chondrichthyes, Petalodontiformes, Petalodontidae): proposed conservation of usage by designation of a neotype for its type species Petalodus hastingsii Owen, 1841.

Status of Case:Resolved (Opinion Issued)
Date Published:12/2018
Authors: Carpenter, K., Itano, W.
Volume and Issue:75/
Pagination:241-246
Keywords: Nomenclature, taxonomy, Carboniferous, Chondrichthyes, Petalodontidae, Petalodus, neotype, England
Taxonomic Group(s): Chondrichthyes
Abstract:

The purpose of this application, under Article 75.6 of the Code, is to confirm the availability and to maintain the usage of the genus Petalodus Owen, 1840, which is threatened by the identity of the type specimen of its type species Petalodus hastingsii Owen, 1840. The description and figure of the specimen by Owen (1840) do not match the actual specimen, nor does it resemble the subtriangular crowns traditionally referred to the form taxon Petalodus described and illustrated by Agassiz (1838: 108–109, pl. 19, figs. 11–13) as Chomatodus (subsequently Petalodus acuminatus by Agassiz, 1843: 159, 174, nota). Additional, more complete, specimens from the same bed and locality as Owen’s specimen were described and illustrated by Arthur Woodward (1889) as Petalodus acuminatus. The crowns of these teeth are labial-lingually compressed, vertically short, broad-based, subtriangular, and convex labially and concave lingually. In the subsequent 170 years, teeth identified and published as Petalodus have referred to the subtriangular teeth as described by Agassiz and Woodward, and not to the rectangular lamelliform tooth described by Owen. The Commission is therefore asked to exercise its plenary power to set aside the misleading and inadequate holotype, NHMUK PV P613, and designate as neotype specimen NHMUK PV P75414, a more complete tooth that shows all the characteristic features of Petalodus.

Full Text:

http://dx.doi.org/10.21805/bzn.v75.a049 (Case)

http://dx.doi.org/10.21805/bzn.v76.a021 (Comment)

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Comments

Comment 3779-1: Support for the proposed conservation of Petalodus Owen, 1840 by designation of a neotype for its type species Petalodus hastingsii Owen, 1840
Status of Case:
Date Published:04/2019
Authors: Lucas, S. G.
Volume and Issue:76/
Pagination:
Keywords:
Taxonomic Group(s):
Abstract:

http://dx.doi.org/10.21805/bzn.v76.a021

External Links: Google Scholar BibTex XML RIS
Comment 3779-2: Opposition to the proposed designation of a neotype for Petalodus hastingsii Owen, 1840
Status of Case:
Date Published:12/2019
Authors: Yun, C.
Volume and Issue:76/
Pagination:
Keywords:
Taxonomic Group(s):
Full Text:

http://dx.doi.org/10.21805/bzn.v76.a059

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Comment 3779-3: Authors’ reply to opposition to the proposed designation of a neotype for Petalodus hastingsii Owen, 1840
Status of Case:
Date Published:04/2020
Authors: Carpenter, K., Itano, W. M.
Volume and Issue:77/
Pagination:
Keywords:
Taxonomic Group(s):
Full Text:

http://dx.doi.org/10.21805/bzn.v77.a011

External Links: Google Scholar BibTex XML RIS
Comment 3779-4: Petalodus hastingsii Owen 1840–1845 (Chondrichthyes, Petalodontiformes, Petalodontidae): proposed
conservation of usage by designation of a neotype
Status of Case:
Date Published:08/2021
Authors: Carpenter, K., Itano, W. M.
Volume and Issue:78/
Pagination:137
Keywords:
Taxonomic Group(s):
Full Text:

http://dx.doi.org/10.21805/bzn.v78.a031

External Links: Google Scholar BibTex XML RIS

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