Braincases of abelisaurid theropods from the Upper Cretaceous of north Patagonia

Autores
Paulina Carabajal, Ariana
Año de publicación
2011
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The braincases of the abelisaurid theropod dinosaurs Abelisauruscomahuensis and Aucasaurus garridoi are described and compared. These two taxa share the presence of a floccular recess that is ‘8’-shaped, the absence of a medullar eminence in the floor of the endocranial cavity and the possession of a well-developed, narrow and tall dorsal longitudinal sinus. The basisphenoidal recess is continuous dorsocaudally with two pneumatic cavities, which are separated medially by a thin septum. A connection between the metotic canal and the columellar recess that probably represents the exit of cranial nerve IX is observed in Abelisaurus. Aucasaurus has a skull roof with a wide sagittal crest and a low parietal eminence that differentiates it from other derived abelisaurids such as Abelisaurus, Carnotaurus and Majungasaurus. The abelisaurid braincases described herein show strong consistency in their general morphology and structure. However, there is some variation, and these detailed descriptions are important for understanding the variation and distribution of braincase characters within Abelisauridae.
Fil: Paulina Carabajal, Ariana. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Confluencia; Argentina. Provincia del Neuquén. Municipalidad de Plaza Huincul. Museo "Carmen Funes"; Argentina
Materia
Abelisaurus
Aucasaurus
Basicranial pneumaticity
Argentina
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:11336/278261
Acceder
id CONICETDig_ced2b4039adc40ac558440d75b26ae2a
oai_identifier_str oai:ri.conicet.gov.ar:11336/278261
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Braincases of abelisaurid theropods from the Upper Cretaceous of north PatagoniaPaulina Carabajal, ArianaAbelisaurusAucasaurusBasicranial pneumaticityArgentinahttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1The braincases of the abelisaurid theropod dinosaurs Abelisauruscomahuensis and Aucasaurus garridoi are described and compared. These two taxa share the presence of a floccular recess that is ‘8’-shaped, the absence of a medullar eminence in the floor of the endocranial cavity and the possession of a well-developed, narrow and tall dorsal longitudinal sinus. The basisphenoidal recess is continuous dorsocaudally with two pneumatic cavities, which are separated medially by a thin septum. A connection between the metotic canal and the columellar recess that probably represents the exit of cranial nerve IX is observed in Abelisaurus. Aucasaurus has a skull roof with a wide sagittal crest and a low parietal eminence that differentiates it from other derived abelisaurids such as Abelisaurus, Carnotaurus and Majungasaurus. The abelisaurid braincases described herein show strong consistency in their general morphology and structure. However, there is some variation, and these detailed descriptions are important for understanding the variation and distribution of braincase characters within Abelisauridae.Fil: Paulina Carabajal, Ariana. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Confluencia; Argentina. Provincia del Neuquén. Municipalidad de Plaza Huincul. Museo "Carmen Funes"; ArgentinaWiley Blackwell Publishing, Inc2011-07info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/278261Paulina Carabajal, Ariana; Braincases of abelisaurid theropods from the Upper Cretaceous of north Patagonia; Wiley Blackwell Publishing, Inc; Palaeontology; 54; 4; 7-2011; 793-8060031-0239CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://onlinelibrary.wiley.com/doi/10.1111/j.1475-4983.2011.01055.xinfo:eu-repo/semantics/altIdentifier/doi/10.1111/j.1475-4983.2011.01055.xinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-12-23T13:12:02Zoai:ri.conicet.gov.ar:11336/278261instacron: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:34982025-12-23 13:12:03.236CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Braincases of abelisaurid theropods from the Upper Cretaceous of north Patagonia
title Braincases of abelisaurid theropods from the Upper Cretaceous of north Patagonia
spellingShingle Braincases of abelisaurid theropods from the Upper Cretaceous of north Patagonia
Paulina Carabajal, Ariana
Abelisaurus
Aucasaurus
Basicranial pneumaticity
Argentina
title_short Braincases of abelisaurid theropods from the Upper Cretaceous of north Patagonia
title_full Braincases of abelisaurid theropods from the Upper Cretaceous of north Patagonia
title_fullStr Braincases of abelisaurid theropods from the Upper Cretaceous of north Patagonia
title_full_unstemmed Braincases of abelisaurid theropods from the Upper Cretaceous of north Patagonia
title_sort Braincases of abelisaurid theropods from the Upper Cretaceous of north Patagonia
dc.creator.none.fl_str_mv Paulina Carabajal, Ariana
author Paulina Carabajal, Ariana
author_facet Paulina Carabajal, Ariana
author_role author
dc.subject.none.fl_str_mv Abelisaurus
Aucasaurus
Basicranial pneumaticity
Argentina
topic Abelisaurus
Aucasaurus
Basicranial pneumaticity
Argentina
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv The braincases of the abelisaurid theropod dinosaurs Abelisauruscomahuensis and Aucasaurus garridoi are described and compared. These two taxa share the presence of a floccular recess that is ‘8’-shaped, the absence of a medullar eminence in the floor of the endocranial cavity and the possession of a well-developed, narrow and tall dorsal longitudinal sinus. The basisphenoidal recess is continuous dorsocaudally with two pneumatic cavities, which are separated medially by a thin septum. A connection between the metotic canal and the columellar recess that probably represents the exit of cranial nerve IX is observed in Abelisaurus. Aucasaurus has a skull roof with a wide sagittal crest and a low parietal eminence that differentiates it from other derived abelisaurids such as Abelisaurus, Carnotaurus and Majungasaurus. The abelisaurid braincases described herein show strong consistency in their general morphology and structure. However, there is some variation, and these detailed descriptions are important for understanding the variation and distribution of braincase characters within Abelisauridae.
Fil: Paulina Carabajal, Ariana. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Confluencia; Argentina. Provincia del Neuquén. Municipalidad de Plaza Huincul. Museo "Carmen Funes"; Argentina
description The braincases of the abelisaurid theropod dinosaurs Abelisauruscomahuensis and Aucasaurus garridoi are described and compared. These two taxa share the presence of a floccular recess that is ‘8’-shaped, the absence of a medullar eminence in the floor of the endocranial cavity and the possession of a well-developed, narrow and tall dorsal longitudinal sinus. The basisphenoidal recess is continuous dorsocaudally with two pneumatic cavities, which are separated medially by a thin septum. A connection between the metotic canal and the columellar recess that probably represents the exit of cranial nerve IX is observed in Abelisaurus. Aucasaurus has a skull roof with a wide sagittal crest and a low parietal eminence that differentiates it from other derived abelisaurids such as Abelisaurus, Carnotaurus and Majungasaurus. The abelisaurid braincases described herein show strong consistency in their general morphology and structure. However, there is some variation, and these detailed descriptions are important for understanding the variation and distribution of braincase characters within Abelisauridae.
publishDate 2011
dc.date.none.fl_str_mv 2011-07
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/11336/278261
Paulina Carabajal, Ariana; Braincases of abelisaurid theropods from the Upper Cretaceous of north Patagonia; Wiley Blackwell Publishing, Inc; Palaeontology; 54; 4; 7-2011; 793-806
0031-0239
CONICET Digital
CONICET
url http://hdl.handle.net/11336/278261
identifier_str_mv Paulina Carabajal, Ariana; Braincases of abelisaurid theropods from the Upper Cretaceous of north Patagonia; Wiley Blackwell Publishing, Inc; Palaeontology; 54; 4; 7-2011; 793-806
0031-0239
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://onlinelibrary.wiley.com/doi/10.1111/j.1475-4983.2011.01055.x
info:eu-repo/semantics/altIdentifier/doi/10.1111/j.1475-4983.2011.01055.x
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
dc.publisher.none.fl_str_mv Wiley Blackwell Publishing, Inc
publisher.none.fl_str_mv Wiley Blackwell Publishing, 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
_version_ 1852334904357945344
score 12.952241

Publicaciones similares