A middle Jurassic abelisaurid from Patagonia and the early diversification of theropod dinosaurs

Autores
Pol, Diego; Rauhut, Oliver W. M.
Año de publicación
2012
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Abelisaurids are a clade of large, bizarre predatory dinosaurs, most notable for their high, short skulls and extremely reduced forelimbs. They were common in Gondwana during the Cretaceous, but exceedingly rare in the Northern Hemisphere. The oldest definitive abelisaurids so far come from the late Early Cretaceous of South America and Africa, and the early evolutionary history of the clade is still poorly known. Here, we report a new abelisaurid from the Middle Jurassic of Patagonia, Eoabelisaurus mefi gen. et sp. nov., which predates the so far oldest known secure member of this lineage by more than 40 Myr. The almost complete skeleton reveals the earliest evolutionary stages of the distinctive features of abelisaurids, such as the modification of the forelimb, which started with a reduction of the distal elements. The find underlines the explosive radiation of theropod dinosaurs in the Middle Jurassic and indicates an unexpected diversity of ceratosaurs at that time. The apparent endemism of abelisauroids to southern Gondwana during Pangean times might be due to the presence of a large, central Gondwanan desert. This indicates that, apart from continent-scale geography, aspects such as regional geography and climate are important to reconstruct the biogeographical history of Mesozoic vertebrates.
Fil: Pol, Diego. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Museo Paleontológico Egidio Feruglio; Argentina
Fil: Rauhut, Oliver W. M.. Ludwig Maximilians Universitat; Alemania
Materia
ABELISAURIDAE
ARGENTINA
CERATOSAURIA
DINOSAURIA
GONDWANAN BIOGEOGRAPHY
MIDDLE JURASSIC
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:11336/195549
Acceder
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network_name_str CONICET Digital (CONICET)
spelling A middle Jurassic abelisaurid from Patagonia and the early diversification of theropod dinosaursPol, DiegoRauhut, Oliver W. M.ABELISAURIDAEARGENTINACERATOSAURIADINOSAURIAGONDWANAN BIOGEOGRAPHYMIDDLE JURASSIChttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1Abelisaurids are a clade of large, bizarre predatory dinosaurs, most notable for their high, short skulls and extremely reduced forelimbs. They were common in Gondwana during the Cretaceous, but exceedingly rare in the Northern Hemisphere. The oldest definitive abelisaurids so far come from the late Early Cretaceous of South America and Africa, and the early evolutionary history of the clade is still poorly known. Here, we report a new abelisaurid from the Middle Jurassic of Patagonia, Eoabelisaurus mefi gen. et sp. nov., which predates the so far oldest known secure member of this lineage by more than 40 Myr. The almost complete skeleton reveals the earliest evolutionary stages of the distinctive features of abelisaurids, such as the modification of the forelimb, which started with a reduction of the distal elements. The find underlines the explosive radiation of theropod dinosaurs in the Middle Jurassic and indicates an unexpected diversity of ceratosaurs at that time. The apparent endemism of abelisauroids to southern Gondwana during Pangean times might be due to the presence of a large, central Gondwanan desert. This indicates that, apart from continent-scale geography, aspects such as regional geography and climate are important to reconstruct the biogeographical history of Mesozoic vertebrates.Fil: Pol, Diego. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Museo Paleontológico Egidio Feruglio; ArgentinaFil: Rauhut, Oliver W. M.. Ludwig Maximilians Universitat; AlemaniaThe Royal Society2012-05info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/195549Pol, Diego; Rauhut, Oliver W. M.; A middle Jurassic abelisaurid from Patagonia and the early diversification of theropod dinosaurs; The Royal Society; Proceedings of the Royal Society of London. Series B: Biological Sciences; 279; 1741; 5-2012; 3170-31750962-8452CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://royalsocietypublishing.org/doi/10.1098/rspb.2012.0660info:eu-repo/semantics/altIdentifier/doi/10.1098/rspb.2012.0660info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:26:02Zoai:ri.conicet.gov.ar:11336/195549instacron: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:34982025-09-29 10:26:02.434CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv A middle Jurassic abelisaurid from Patagonia and the early diversification of theropod dinosaurs
title A middle Jurassic abelisaurid from Patagonia and the early diversification of theropod dinosaurs
spellingShingle A middle Jurassic abelisaurid from Patagonia and the early diversification of theropod dinosaurs
Pol, Diego
ABELISAURIDAE
ARGENTINA
CERATOSAURIA
DINOSAURIA
GONDWANAN BIOGEOGRAPHY
MIDDLE JURASSIC
title_short A middle Jurassic abelisaurid from Patagonia and the early diversification of theropod dinosaurs
title_full A middle Jurassic abelisaurid from Patagonia and the early diversification of theropod dinosaurs
title_fullStr A middle Jurassic abelisaurid from Patagonia and the early diversification of theropod dinosaurs
title_full_unstemmed A middle Jurassic abelisaurid from Patagonia and the early diversification of theropod dinosaurs
title_sort A middle Jurassic abelisaurid from Patagonia and the early diversification of theropod dinosaurs
dc.creator.none.fl_str_mv Pol, Diego
Rauhut, Oliver W. M.
author Pol, Diego
author_facet Pol, Diego
Rauhut, Oliver W. M.
author_role author
author2 Rauhut, Oliver W. M.
author2_role author
dc.subject.none.fl_str_mv ABELISAURIDAE
ARGENTINA
CERATOSAURIA
DINOSAURIA
GONDWANAN BIOGEOGRAPHY
MIDDLE JURASSIC
topic ABELISAURIDAE
ARGENTINA
CERATOSAURIA
DINOSAURIA
GONDWANAN BIOGEOGRAPHY
MIDDLE JURASSIC
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Abelisaurids are a clade of large, bizarre predatory dinosaurs, most notable for their high, short skulls and extremely reduced forelimbs. They were common in Gondwana during the Cretaceous, but exceedingly rare in the Northern Hemisphere. The oldest definitive abelisaurids so far come from the late Early Cretaceous of South America and Africa, and the early evolutionary history of the clade is still poorly known. Here, we report a new abelisaurid from the Middle Jurassic of Patagonia, Eoabelisaurus mefi gen. et sp. nov., which predates the so far oldest known secure member of this lineage by more than 40 Myr. The almost complete skeleton reveals the earliest evolutionary stages of the distinctive features of abelisaurids, such as the modification of the forelimb, which started with a reduction of the distal elements. The find underlines the explosive radiation of theropod dinosaurs in the Middle Jurassic and indicates an unexpected diversity of ceratosaurs at that time. The apparent endemism of abelisauroids to southern Gondwana during Pangean times might be due to the presence of a large, central Gondwanan desert. This indicates that, apart from continent-scale geography, aspects such as regional geography and climate are important to reconstruct the biogeographical history of Mesozoic vertebrates.
Fil: Pol, Diego. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Museo Paleontológico Egidio Feruglio; Argentina
Fil: Rauhut, Oliver W. M.. Ludwig Maximilians Universitat; Alemania
description Abelisaurids are a clade of large, bizarre predatory dinosaurs, most notable for their high, short skulls and extremely reduced forelimbs. They were common in Gondwana during the Cretaceous, but exceedingly rare in the Northern Hemisphere. The oldest definitive abelisaurids so far come from the late Early Cretaceous of South America and Africa, and the early evolutionary history of the clade is still poorly known. Here, we report a new abelisaurid from the Middle Jurassic of Patagonia, Eoabelisaurus mefi gen. et sp. nov., which predates the so far oldest known secure member of this lineage by more than 40 Myr. The almost complete skeleton reveals the earliest evolutionary stages of the distinctive features of abelisaurids, such as the modification of the forelimb, which started with a reduction of the distal elements. The find underlines the explosive radiation of theropod dinosaurs in the Middle Jurassic and indicates an unexpected diversity of ceratosaurs at that time. The apparent endemism of abelisauroids to southern Gondwana during Pangean times might be due to the presence of a large, central Gondwanan desert. This indicates that, apart from continent-scale geography, aspects such as regional geography and climate are important to reconstruct the biogeographical history of Mesozoic vertebrates.
publishDate 2012
dc.date.none.fl_str_mv 2012-05
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/11336/195549
Pol, Diego; Rauhut, Oliver W. M.; A middle Jurassic abelisaurid from Patagonia and the early diversification of theropod dinosaurs; The Royal Society; Proceedings of the Royal Society of London. Series B: Biological Sciences; 279; 1741; 5-2012; 3170-3175
0962-8452
CONICET Digital
CONICET
url http://hdl.handle.net/11336/195549
identifier_str_mv Pol, Diego; Rauhut, Oliver W. M.; A middle Jurassic abelisaurid from Patagonia and the early diversification of theropod dinosaurs; The Royal Society; Proceedings of the Royal Society of London. Series B: Biological Sciences; 279; 1741; 5-2012; 3170-3175
0962-8452
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://royalsocietypublishing.org/doi/10.1098/rspb.2012.0660
info:eu-repo/semantics/altIdentifier/doi/10.1098/rspb.2012.0660
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 The Royal Society
publisher.none.fl_str_mv The Royal Society
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 13.070432

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