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dc.contributor.author
Paes Neto, Voltaire
dc.contributor.author
Desojo, Julia Brenda
dc.contributor.author
Biacchi Brust, Ana Carolina
dc.contributor.author
Ribeiro, Ana Maria
dc.contributor.author
Schultz, Cesar
dc.contributor.author
Soares, Marina
dc.date.available
2022-08-09T01:24:46Z
dc.date.issued
2021-11
dc.identifier.citation
Paes Neto, Voltaire; Desojo, Julia Brenda; Biacchi Brust, Ana Carolina; Ribeiro, Ana Maria; Schultz, Cesar; et al.; The first braincase of the basal aetosaur Aetosauroides scagliai (Archosauria: Pseudosuchia) from the Upper Triassic of Brazil; Society of Vertebrate Paleontology; Journal of Vertebrate Paleontology; 41; 2; 11-2021; 1-17
dc.identifier.issn
0272-4634
dc.identifier.uri
http://hdl.handle.net/11336/164639
dc.description.abstract
The phylogenetic relationships of Pseudosuchia, the crocodile-line of Archosauria, are still poorly resolved, in part, due to the lack of crucial braincase information for several key taxa. Recently, erpetosuchids and ornithosuchids have been recovered as close relatives to Aetosauria, sharing several braincase features. Here we provide the description of the first braincase of the basal aetosaur Aetosauroides based on specimens from the Upper Triassic Candelária Sequence of Brazil. Our study revealed the presence of an exoccipital lateral ridge and a medial ridge on the supraoccipital (both shared with all aetosaurs and erpetosuchids, but absent in ornithosuchids) and an anterolateral exit for the internal carotids (shared with all aetosaurs and ornithosuchids, but not with erpetosuchids). Aetosauroides lacks a medial contact between the exoccipitals (shared with the aetosaurs Desmatosuchus smalli and Tecovasuchus) and possesses a single hypoglossal foramen (contrasting with Stagonolepis robertsoni and Desmatosuchus spurensis). It also differs from the putative Argentinian Aetosauroides (PVSJ 326) by the presence of a ridge connecting the basal tubera medially (contrasting also with all stagonolepidoideans) and by a bulbous and ventrolaterally recurved basipterygoid process (contrasting with Paratypothorax). These features show that the braincase of aetosaurs is suitable for providing further phylogenetic information and may contribute to resolving controversies within Pseudosuchia relationships.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Society of Vertebrate Paleontology
dc.rights
info:eu-repo/semantics/restrictedAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Aetosauria
dc.subject
Brazil
dc.subject
Santa Maria Formation
dc.subject
braincase
dc.subject.classification
Paleontología
dc.subject.classification
Ciencias de la Tierra y relacionadas con el Medio Ambiente
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CIENCIAS NATURALES Y EXACTAS
dc.title
The first braincase of the basal aetosaur Aetosauroides scagliai (Archosauria: Pseudosuchia) from the Upper Triassic of Brazil
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2022-08-03T18:10:32Z
dc.journal.volume
41
dc.journal.number
2
dc.journal.pagination
1-17
dc.journal.pais
Estados Unidos
dc.journal.ciudad
Lawrence
dc.description.fil
Fil: Paes Neto, Voltaire. Universidade Federal do Rio Grande do Sul; Brasil
dc.description.fil
Fil: Desojo, Julia Brenda. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. División Paleontología Vertebrados; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata; Argentina
dc.description.fil
Fil: Biacchi Brust, Ana Carolina. Universidade Federal do Rio Grande do Sul; Brasil
dc.description.fil
Fil: Ribeiro, Ana Maria. Universidade Federal do Rio Grande do Sul; Brasil
dc.description.fil
Fil: Schultz, Cesar. Universidade Federal do Rio Grande do Sul; Brasil
dc.description.fil
Fil: Soares, Marina. Universidade Federal do Rio Grande do Sul; Brasil. Universidade Federal do Rio de Janeiro; Brasil
dc.journal.title
Journal of Vertebrate Paleontology
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1080/02724634.2021.1928681
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.tandfonline.com/doi/full/10.1080/02724634.2021.1928681
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