Osteology of the axial skeleton of Aucasaurus garridoi: phylogenetic and paleobiological inferences

Autores
Baiano, Mattia Antonio; Coria, Rodolfo Anibal; Chiappe, Luis M.; Zurriaguz, Virginia Laura; Coria, Ludmila
Año de publicación
2023
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Aucasaurus garridoi is an abelisaurid theropod from the Anacleto Formation (lower Campanian, Upper Cretaceous) of Patagonia, Argentina. The holotype of Aucasaurus garridoi includes cranial material, axial elements, and almost complete fore- and hind limbs. Here we present a detailed description of the axial skeleton of this taxon, along with some paleobiological and phylogenetic inferences. The presacral elements are somewhat fragmentary, although these show features shared with other abelisaurids. The caudal series, to date the most complete among brachyrostran abelisaurids, shows several autapomorphic features including the presence of pneumatic recesses on the dorsal surface of the anterior caudal neural arches, a tubercle lateral to the prezygapophysis of mid caudal vertebrae, a marked protuberance on the lateral rim of the transverse process of the caudal vertebrae, and the presence of a small ligamentous scar near the anterior edge of the dorsal surface in the anteriormost caudal transverse process. The detailed study of the axial skeleton of Aucasaurus garridoi has also allowed us to identify characters that could be useful for future studies attempting to resolve the internal phylogenetic relationships of Abelisauridae. Computed tomography scans of some caudal vertebrae show pneumatic traits in neural arches and centra, and thus the first reported case for an abelisaurid taxon. Moreover, some osteological correlates of soft tissues present in Aucasaurus and other abelisaurids, especially derived brachyrostrans, underscore a previously proposed increase in axial rigidity within Abelisauridae.
Fil: Baiano, Mattia Antonio. Universidad Nacional de Río Negro; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte. Instituto de Investigación en Paleobiología y Geología; Argentina. Provincia del Neuquén. Municipalidad de Villa El Chocón. Museo Paleontológico "Ernesto Bachmann"; Argentina
Fil: Coria, Rodolfo Anibal. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Provincia del Neuquén. Municipalidad de Plaza Huincul. Museo "Carmen Funes"; Argentina. Universidad Nacional de Río Negro; Argentina
Fil: Chiappe, Luis M.. Natural History Museum; Reino Unido
Fil: Zurriaguz, Virginia Laura. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte. Instituto de Investigación en Paleobiología y Geología; Argentina
Fil: Coria, Ludmila. Provincia del Neuquén. Municipalidad de Plaza Huincul. Museo "Carmen Funes"; Argentina
Materia
ABELISAURIDAE
ANACLETO FORMATION
BRACHYROSTRA
LATE CRETACEOUS
PATAGONIA
PHYLOGENY
PNEUMATICITY
THEROPODA
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/227501
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/227501
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Osteology of the axial skeleton of Aucasaurus garridoi: phylogenetic and paleobiological inferencesBaiano, Mattia AntonioCoria, Rodolfo AnibalChiappe, Luis M.Zurriaguz, Virginia LauraCoria, LudmilaABELISAURIDAEANACLETO FORMATIONBRACHYROSTRALATE CRETACEOUSPATAGONIAPHYLOGENYPNEUMATICITYTHEROPODAhttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1Aucasaurus garridoi is an abelisaurid theropod from the Anacleto Formation (lower Campanian, Upper Cretaceous) of Patagonia, Argentina. The holotype of Aucasaurus garridoi includes cranial material, axial elements, and almost complete fore- and hind limbs. Here we present a detailed description of the axial skeleton of this taxon, along with some paleobiological and phylogenetic inferences. The presacral elements are somewhat fragmentary, although these show features shared with other abelisaurids. The caudal series, to date the most complete among brachyrostran abelisaurids, shows several autapomorphic features including the presence of pneumatic recesses on the dorsal surface of the anterior caudal neural arches, a tubercle lateral to the prezygapophysis of mid caudal vertebrae, a marked protuberance on the lateral rim of the transverse process of the caudal vertebrae, and the presence of a small ligamentous scar near the anterior edge of the dorsal surface in the anteriormost caudal transverse process. The detailed study of the axial skeleton of Aucasaurus garridoi has also allowed us to identify characters that could be useful for future studies attempting to resolve the internal phylogenetic relationships of Abelisauridae. Computed tomography scans of some caudal vertebrae show pneumatic traits in neural arches and centra, and thus the first reported case for an abelisaurid taxon. Moreover, some osteological correlates of soft tissues present in Aucasaurus and other abelisaurids, especially derived brachyrostrans, underscore a previously proposed increase in axial rigidity within Abelisauridae.Fil: Baiano, Mattia Antonio. Universidad Nacional de Río Negro; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte. Instituto de Investigación en Paleobiología y Geología; Argentina. Provincia del Neuquén. Municipalidad de Villa El Chocón. Museo Paleontológico "Ernesto Bachmann"; ArgentinaFil: Coria, Rodolfo Anibal. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Provincia del Neuquén. Municipalidad de Plaza Huincul. Museo "Carmen Funes"; Argentina. Universidad Nacional de Río Negro; ArgentinaFil: Chiappe, Luis M.. Natural History Museum; Reino UnidoFil: Zurriaguz, Virginia Laura. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte. Instituto de Investigación en Paleobiología y Geología; ArgentinaFil: Coria, Ludmila. Provincia del Neuquén. Municipalidad de Plaza Huincul. Museo "Carmen Funes"; ArgentinaPeerJ Inc.2023-11info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/227501Baiano, Mattia Antonio; Coria, Rodolfo Anibal; Chiappe, Luis M.; Zurriaguz, Virginia Laura; Coria, Ludmila; Osteology of the axial skeleton of Aucasaurus garridoi: phylogenetic and paleobiological inferences; PeerJ Inc.; PeerJ; 11; 11-2023; 1-722167-8359CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://peerj.com/articles/16236info:eu-repo/semantics/altIdentifier/doi/10.7717/peerj.16236info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-15T14:24:10Zoai:ri.conicet.gov.ar:11336/227501instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-10-15 14:24:10.806CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Osteology of the axial skeleton of Aucasaurus garridoi: phylogenetic and paleobiological inferences
title Osteology of the axial skeleton of Aucasaurus garridoi: phylogenetic and paleobiological inferences
spellingShingle Osteology of the axial skeleton of Aucasaurus garridoi: phylogenetic and paleobiological inferences
Baiano, Mattia Antonio
ABELISAURIDAE
ANACLETO FORMATION
BRACHYROSTRA
LATE CRETACEOUS
PATAGONIA
PHYLOGENY
PNEUMATICITY
THEROPODA
title_short Osteology of the axial skeleton of Aucasaurus garridoi: phylogenetic and paleobiological inferences
title_full Osteology of the axial skeleton of Aucasaurus garridoi: phylogenetic and paleobiological inferences
title_fullStr Osteology of the axial skeleton of Aucasaurus garridoi: phylogenetic and paleobiological inferences
title_full_unstemmed Osteology of the axial skeleton of Aucasaurus garridoi: phylogenetic and paleobiological inferences
title_sort Osteology of the axial skeleton of Aucasaurus garridoi: phylogenetic and paleobiological inferences
dc.creator.none.fl_str_mv Baiano, Mattia Antonio
Coria, Rodolfo Anibal
Chiappe, Luis M.
Zurriaguz, Virginia Laura
Coria, Ludmila
author Baiano, Mattia Antonio
author_facet Baiano, Mattia Antonio
Coria, Rodolfo Anibal
Chiappe, Luis M.
Zurriaguz, Virginia Laura
Coria, Ludmila
author_role author
author2 Coria, Rodolfo Anibal
Chiappe, Luis M.
Zurriaguz, Virginia Laura
Coria, Ludmila
author2_role author
author
author
author
dc.subject.none.fl_str_mv ABELISAURIDAE
ANACLETO FORMATION
BRACHYROSTRA
LATE CRETACEOUS
PATAGONIA
PHYLOGENY
PNEUMATICITY
THEROPODA
topic ABELISAURIDAE
ANACLETO FORMATION
BRACHYROSTRA
LATE CRETACEOUS
PATAGONIA
PHYLOGENY
PNEUMATICITY
THEROPODA
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Aucasaurus garridoi is an abelisaurid theropod from the Anacleto Formation (lower Campanian, Upper Cretaceous) of Patagonia, Argentina. The holotype of Aucasaurus garridoi includes cranial material, axial elements, and almost complete fore- and hind limbs. Here we present a detailed description of the axial skeleton of this taxon, along with some paleobiological and phylogenetic inferences. The presacral elements are somewhat fragmentary, although these show features shared with other abelisaurids. The caudal series, to date the most complete among brachyrostran abelisaurids, shows several autapomorphic features including the presence of pneumatic recesses on the dorsal surface of the anterior caudal neural arches, a tubercle lateral to the prezygapophysis of mid caudal vertebrae, a marked protuberance on the lateral rim of the transverse process of the caudal vertebrae, and the presence of a small ligamentous scar near the anterior edge of the dorsal surface in the anteriormost caudal transverse process. The detailed study of the axial skeleton of Aucasaurus garridoi has also allowed us to identify characters that could be useful for future studies attempting to resolve the internal phylogenetic relationships of Abelisauridae. Computed tomography scans of some caudal vertebrae show pneumatic traits in neural arches and centra, and thus the first reported case for an abelisaurid taxon. Moreover, some osteological correlates of soft tissues present in Aucasaurus and other abelisaurids, especially derived brachyrostrans, underscore a previously proposed increase in axial rigidity within Abelisauridae.
Fil: Baiano, Mattia Antonio. Universidad Nacional de Río Negro; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte. Instituto de Investigación en Paleobiología y Geología; Argentina. Provincia del Neuquén. Municipalidad de Villa El Chocón. Museo Paleontológico "Ernesto Bachmann"; Argentina
Fil: Coria, Rodolfo Anibal. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Provincia del Neuquén. Municipalidad de Plaza Huincul. Museo "Carmen Funes"; Argentina. Universidad Nacional de Río Negro; Argentina
Fil: Chiappe, Luis M.. Natural History Museum; Reino Unido
Fil: Zurriaguz, Virginia Laura. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte. Instituto de Investigación en Paleobiología y Geología; Argentina
Fil: Coria, Ludmila. Provincia del Neuquén. Municipalidad de Plaza Huincul. Museo "Carmen Funes"; Argentina
description Aucasaurus garridoi is an abelisaurid theropod from the Anacleto Formation (lower Campanian, Upper Cretaceous) of Patagonia, Argentina. The holotype of Aucasaurus garridoi includes cranial material, axial elements, and almost complete fore- and hind limbs. Here we present a detailed description of the axial skeleton of this taxon, along with some paleobiological and phylogenetic inferences. The presacral elements are somewhat fragmentary, although these show features shared with other abelisaurids. The caudal series, to date the most complete among brachyrostran abelisaurids, shows several autapomorphic features including the presence of pneumatic recesses on the dorsal surface of the anterior caudal neural arches, a tubercle lateral to the prezygapophysis of mid caudal vertebrae, a marked protuberance on the lateral rim of the transverse process of the caudal vertebrae, and the presence of a small ligamentous scar near the anterior edge of the dorsal surface in the anteriormost caudal transverse process. The detailed study of the axial skeleton of Aucasaurus garridoi has also allowed us to identify characters that could be useful for future studies attempting to resolve the internal phylogenetic relationships of Abelisauridae. Computed tomography scans of some caudal vertebrae show pneumatic traits in neural arches and centra, and thus the first reported case for an abelisaurid taxon. Moreover, some osteological correlates of soft tissues present in Aucasaurus and other abelisaurids, especially derived brachyrostrans, underscore a previously proposed increase in axial rigidity within Abelisauridae.
publishDate 2023
dc.date.none.fl_str_mv 2023-11
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/227501
Baiano, Mattia Antonio; Coria, Rodolfo Anibal; Chiappe, Luis M.; Zurriaguz, Virginia Laura; Coria, Ludmila; Osteology of the axial skeleton of Aucasaurus garridoi: phylogenetic and paleobiological inferences; PeerJ Inc.; PeerJ; 11; 11-2023; 1-72
2167-8359
CONICET Digital
CONICET
url http://hdl.handle.net/11336/227501
identifier_str_mv Baiano, Mattia Antonio; Coria, Rodolfo Anibal; Chiappe, Luis M.; Zurriaguz, Virginia Laura; Coria, Ludmila; Osteology of the axial skeleton of Aucasaurus garridoi: phylogenetic and paleobiological inferences; PeerJ Inc.; PeerJ; 11; 11-2023; 1-72
2167-8359
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://peerj.com/articles/16236
info:eu-repo/semantics/altIdentifier/doi/10.7717/peerj.16236
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv PeerJ Inc.
publisher.none.fl_str_mv PeerJ Inc.
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 13.22299

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