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, Sergio Sánchez-Fenollosa Fundación Conjunto Paleontológico de Teruel-Dinópolis/Museo Aragonés de Paleontología , Avenida Sagunto S/N, 44002 Teruel, Teruel , Spain Corresponding author. Fundación Conjunto Paleontológico de Teruel-Dinópolis/Museo Aragonés de Paleontología, Avenida Sagunto S/N, 44002 Teruel, Teruel, Spain.E-mail: sfenollosa@fundaciondinopolis.org Search for other works by this author on: Oxford Academic Fernando Escaso Grupo de Biología Evolutiva, Facultad de Ciencias, Universidad Nacional de Educación a Distancia (UNED) , Avenida Esparta S/N, 28232 Las Rozas de Madrid, Madrid , Spain Search for other works by this author on: Oxford Academic Alberto Cobos Fundación Conjunto Paleontológico de Teruel-Dinópolis/Museo Aragonés de Paleontología , Avenida Sagunto S/N, 44002 Teruel, Teruel , Spain Search for other works by this author on: Oxford Academic
Zoological Journal of the Linnean Society, zlae074, https://doi.org/10.1093/zoolinnean/zlae074
Published:
21 June 2024
Article history
Received:
10 December 2023
Revision received:
29 February 2024
Accepted:
17 May 2024
Published:
21 June 2024
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Sergio Sánchez-Fenollosa, Fernando Escaso, Alberto Cobos, A new specimen of Dacentrurus armatus Owen, 1875 (Ornithischia: Thyreophora) from the Upper Jurassic of Spain and its taxonomic relevance in the European stegosaurian diversity, Zoological Journal of the Linnean Society, 2024;, zlae074, https://doi.org/10.1093/zoolinnean/zlae074
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Abstract
Dacentrurus armatus was the first stegosaur described in the European Upper Jurassic at the end of the 19th century. The description of a second dacentrurine taxon, ‘Miragaia longicollum’, diagnosed from material non-comparable with the D. armatus holotype, has been controversial, and its validity has been challenged. In this study, we describe a new relatively complete stegosaurian postcranial skeleton from the Villar del Arzobispo Formation (Upper Jurassic, Spain). The systematic study of this new specimen and a comprehensive taxonomic assessment of the material not attributed to Stegosaurus from the Upper Jurassic of Europe, reveal high morphological hom*ogeneity and an absence of morphological criteria for distinguishing two dacentrurine taxa. Therefore, ‘Mi. longicollum’ is proposed as a subjective junior synonym of D. armatus. Moreover, a new diagnosis for D. armatus is suggested based on the holotype and referred specimens. As a result, only two stegosaurian species, Stegosaurus stenops and D. armatus, are recognized in Europe during the Late Jurassic. Finally, the species longispinus from the Morrison Formation (Upper Jurassic, USA) is returned to the genus Alcovasaurus.
Dinosauria, Mesozoic, Jurassic, Europe, vertebrate palaeontology, comparative anatomy, taxonomy, morphological systematics, intraspecific variation, biodiversity
© The Author(s) 2024. Published by Oxford University Press on behalf of The Linnean Society of London. All rights reserved. For commercial re-use, please contact reprints@oup.com for reprints and translation rights for reprints. All other permissions can be obtained through our RightsLink service via the Permissions link on the article page on our site—for further information please contact journals.permissions@oup.com.
This article is published and distributed under the terms of the Oxford University Press, Standard Journals Publication Model (https://academic.oup.com/pages/standard-publication-reuse-rights)
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A new specimen of Dacentrurus armatus Owen, 1875 (Ornithischia: Thyreophora) from the Upper Jurassic of Spain and its taxonomic relevance in the European stegosaurian diversity - 24 Hours access
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