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Título: | A new paradigm for Cerapodan Phylogeny : disentangling the origins of Marginocephalia and rediscussing Basal Iguanodontian relationships |
Autor(es): | Dieudonné, Paul-Emile Cruzado-Caballero, Penélope Godefroit, Pascal Tortosa, Therrien |
Fecha de publicación: | 20-jul-2020 |
Citación: | Dieudonné, P. E., Cruzado-Caballero, P., Godefroit, P., & Tortosa, T. (2021). A new phylogeny of cerapodan dinosaurs. Historical Biology, 33(10), 2335-2355. |
Revista: | Historical biology |
Abstract: | This work attempts at providing a revised framework for ornithischian phylogeny, based on an exhaustive data compilation of already published analyses, a critical re-evaluation of osteological characters and an in-depth checking of characters scoring to fix mistakes that have accumulated in previous analyses; we have also included recently described basal ornithischians, marginocephalians and ornithopods. ‘Heterodontosaurids’ are recovered as a paraphyletic group of basal Marginocephalia that progressively lead to the dome-headed ‘true’ pachycephalosaurs. ‘Heterodontosaurids’ consequently fall within Pachycephalosauria sensu Sereno, 1998. The reconfiguration of basal cerapodan relationships pulls the origins of ornithopods to the earliest stages of the Jurassic. Based on the present analysis, we also discuss ornithopod relationships, with a particular focus on basal Iguanodontia. Tenontosaurus is found as the basalmost iguanodontian. The monophyly of Rhabdodontomorpha in a position more derived than Tenontosaurus is supported by the present analysis. |
Resumen: | This work attempts at providing a revised framework for ornithischian phylogeny, based on an exhaustive data compilation of already published analyses, a critical re-evaluation of osteological characters and an in-depth checking of characters scoring to fix mistakes that have accumulated in previous analyses; we have also included recently described basal ornithischians, marginocephalians and ornithopods. ‘Heterodontosaurids’ are recovered as a paraphyletic group of basal Marginocephalia that progressively lead to the dome-headed ‘true’ pachycephalosaurs. ‘Heterodontosaurids’ consequently fall within Pachycephalosauria sensu Sereno, 1998. The reconfiguration of basal cerapodan relationships pulls the origins of ornithopods to the earliest stages of the Jurassic. Based on the present analysis, we also discuss ornithopod relationships, with a particular focus on basal Iguanodontia. Tenontosaurus is found as the basalmost iguanodontian. The monophyly of Rhabdodontomorpha in a position more derived than Tenontosaurus is supported by the present analysis. |
URI: | http://rid.unrn.edu.ar/handle/20.500.12049/11289 |
ISSN: | 0891-2963 |
Aparece en las colecciones: | Artículos |
Archivos en este ítem:
Archivo | Descripción | Tamaño | Formato | |
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GHBI-2020-0038_Proof_hi.pdf | Dieudonné_etal_inpress | 3,57 MB | Adobe PDF | Visualizar/Abrir |
Este documento es resultado del financiamiento otorgado por el Estado Nacional, por lo tanto queda sujeto al cumplimiento de la Ley N° 26.899
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