Osteology of the axial skeleton of Aucasaurus garridoi: phylogenetic and paleobiological inferences DOI Creative Commons
Mattia A. Baiano, Rodolfo A. Coria, Luis M. Chiappe

и другие.

PeerJ, Год журнала: 2023, Номер 11, С. e16236 - e16236

Опубликована: Ноя. 14, 2023

Aucasaurus garridoi is an abelisaurid theropod from the Anacleto Formation (lower Campanian, Upper Cretaceous) of Patagonia, Argentina. The holotype includes cranial material, axial elements, and almost complete fore- hind limbs. Here we present a detailed description skeleton this taxon, along with some paleobiological phylogenetic inferences. presacral elements are somewhat fragmentary, although these show features shared other abelisaurids. caudal series, to date most among brachyrostran abelisaurids, shows several autapomorphic including presence pneumatic recesses on dorsal surface anterior neural arches, tubercle lateral prezygapophysis mid vertebrae, marked protuberance rim transverse process small ligamentous scar near edge in anteriormost process. study has also allowed us identify characters that could be useful for future studies attempting resolve internal relationships Abelisauridae. Computed tomography scans vertebrae traits arches centra, thus first reported case taxon. Moreover, osteological correlates soft tissues especially derived brachyrostrans, underscore previously proposed increase rigidity within

Язык: Английский

Osteology of the axial skeleton of Aucasaurus garridoi: phylogenetic and paleobiological inferences DOI Creative Commons
Mattia A. Baiano, Rodolfo A. Coria, Luis M. Chiappe

и другие.

PeerJ, Год журнала: 2023, Номер 11, С. e16236 - e16236

Опубликована: Ноя. 14, 2023

Aucasaurus garridoi is an abelisaurid theropod from the Anacleto Formation (lower Campanian, Upper Cretaceous) of Patagonia, Argentina. The holotype includes cranial material, axial elements, and almost complete fore- hind limbs. Here we present a detailed description skeleton this taxon, along with some paleobiological phylogenetic inferences. presacral elements are somewhat fragmentary, although these show features shared other abelisaurids. caudal series, to date most among brachyrostran abelisaurids, shows several autapomorphic including presence pneumatic recesses on dorsal surface anterior neural arches, tubercle lateral prezygapophysis mid vertebrae, marked protuberance rim transverse process small ligamentous scar near edge in anteriormost process. study has also allowed us identify characters that could be useful for future studies attempting resolve internal relationships Abelisauridae. Computed tomography scans vertebrae traits arches centra, thus first reported case taxon. Moreover, osteological correlates soft tissues especially derived brachyrostrans, underscore previously proposed increase rigidity within

Язык: Английский

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