A basal dinosaur from the dawn of the dinosaur era in southwestern pangaea

Autores
Martínez, Ricardo Néstor; Sereno, Paul C.; Alcober, Oscar; Colombi, Carina Ester; Renne, Paul R.; Montañez, Isabel P.; Currie, Brian S.
Año de publicación
2011
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Upper Triassic rocks in northwestern Argentina preserve the most complete record of dinosaurs before their rise to dominance in the Early Jurassic. Here, we describe a previously unidentified basal theropod, reassess its contemporary Eoraptor as a basal sauropodomorph, divide the faunal record of the Ischigualasto Formation with biozones, and bracket the formation with 40Ar/39Ar ages. Some 230 million years ago in the Late Triassic (mid Carnian), the earliest dinosaurs were the dominant terrestrial carnivores and small herbivores in southwestern Pangaea. The extinction of nondinosaurian herbivores is sequential and is not linked to an increase in dinosaurian diversity, which weakens the predominant scenario for dinosaurian ascendancy as opportunistic replacement.
Fil: Martínez, Ricardo Néstor. Universidad Nacional de San Juan. Facultad de Ciencias Exactas, Físicas y Naturales. Instituto y Museo de Ciencias Naturales; Argentina
Fil: Sereno, Paul C.. University of Chicago; Estados Unidos
Fil: Alcober, Oscar. Universidad Nacional de San Juan. Facultad de Ciencias Exactas, Físicas y Naturales. Instituto y Museo de Ciencias Naturales; Argentina
Fil: Colombi, Carina Ester. Universidad Nacional de San Juan. Facultad de Ciencias Exactas, Físicas y Naturales. Instituto y Museo de Ciencias Naturales; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Renne, Paul R.. Berkeley Geochronology Center; Estados Unidos. University of California at Berkeley; Estados Unidos
Fil: Montañez, Isabel P.. University of California at Davis; Estados Unidos
Fil: Currie, Brian S.. Miami University; Estados Unidos
Materia
Dinosaur
Extinction
Carnian
Biozones
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:11336/69202
Acceder
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network_name_str CONICET Digital (CONICET)
spelling A basal dinosaur from the dawn of the dinosaur era in southwestern pangaeaMartínez, Ricardo NéstorSereno, Paul C.Alcober, OscarColombi, Carina EsterRenne, Paul R.Montañez, Isabel P.Currie, Brian S.DinosaurExtinctionCarnianBiozoneshttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1Upper Triassic rocks in northwestern Argentina preserve the most complete record of dinosaurs before their rise to dominance in the Early Jurassic. Here, we describe a previously unidentified basal theropod, reassess its contemporary Eoraptor as a basal sauropodomorph, divide the faunal record of the Ischigualasto Formation with biozones, and bracket the formation with 40Ar/39Ar ages. Some 230 million years ago in the Late Triassic (mid Carnian), the earliest dinosaurs were the dominant terrestrial carnivores and small herbivores in southwestern Pangaea. The extinction of nondinosaurian herbivores is sequential and is not linked to an increase in dinosaurian diversity, which weakens the predominant scenario for dinosaurian ascendancy as opportunistic replacement.Fil: Martínez, Ricardo Néstor. Universidad Nacional de San Juan. Facultad de Ciencias Exactas, Físicas y Naturales. Instituto y Museo de Ciencias Naturales; ArgentinaFil: Sereno, Paul C.. University of Chicago; Estados UnidosFil: Alcober, Oscar. Universidad Nacional de San Juan. Facultad de Ciencias Exactas, Físicas y Naturales. Instituto y Museo de Ciencias Naturales; ArgentinaFil: Colombi, Carina Ester. Universidad Nacional de San Juan. Facultad de Ciencias Exactas, Físicas y Naturales. Instituto y Museo de Ciencias Naturales; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Renne, Paul R.. Berkeley Geochronology Center; Estados Unidos. University of California at Berkeley; Estados UnidosFil: Montañez, Isabel P.. University of California at Davis; Estados UnidosFil: Currie, Brian S.. Miami University; Estados UnidosAmerican Association for the Advancement of Science2011-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/69202Martínez, Ricardo Néstor; Sereno, Paul C.; Alcober, Oscar; Colombi, Carina Ester; Renne, Paul R.; et al.; A basal dinosaur from the dawn of the dinosaur era in southwestern pangaea; American Association for the Advancement of Science; Science; 331; 6014; 1-2011; 206-2100036-8075CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1126/science.1198467info:eu-repo/semantics/altIdentifier/url/http://science.sciencemag.org/content/331/6014/206info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-15T15:26:30Zoai:ri.conicet.gov.ar:11336/69202instacron: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 15:26:30.761CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv A basal dinosaur from the dawn of the dinosaur era in southwestern pangaea
title A basal dinosaur from the dawn of the dinosaur era in southwestern pangaea
spellingShingle A basal dinosaur from the dawn of the dinosaur era in southwestern pangaea
Martínez, Ricardo Néstor
Dinosaur
Extinction
Carnian
Biozones
title_short A basal dinosaur from the dawn of the dinosaur era in southwestern pangaea
title_full A basal dinosaur from the dawn of the dinosaur era in southwestern pangaea
title_fullStr A basal dinosaur from the dawn of the dinosaur era in southwestern pangaea
title_full_unstemmed A basal dinosaur from the dawn of the dinosaur era in southwestern pangaea
title_sort A basal dinosaur from the dawn of the dinosaur era in southwestern pangaea
dc.creator.none.fl_str_mv Martínez, Ricardo Néstor
Sereno, Paul C.
Alcober, Oscar
Colombi, Carina Ester
Renne, Paul R.
Montañez, Isabel P.
Currie, Brian S.
author Martínez, Ricardo Néstor
author_facet Martínez, Ricardo Néstor
Sereno, Paul C.
Alcober, Oscar
Colombi, Carina Ester
Renne, Paul R.
Montañez, Isabel P.
Currie, Brian S.
author_role author
author2 Sereno, Paul C.
Alcober, Oscar
Colombi, Carina Ester
Renne, Paul R.
Montañez, Isabel P.
Currie, Brian S.
author2_role author
author
author
author
author
author
dc.subject.none.fl_str_mv Dinosaur
Extinction
Carnian
Biozones
topic Dinosaur
Extinction
Carnian
Biozones
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Upper Triassic rocks in northwestern Argentina preserve the most complete record of dinosaurs before their rise to dominance in the Early Jurassic. Here, we describe a previously unidentified basal theropod, reassess its contemporary Eoraptor as a basal sauropodomorph, divide the faunal record of the Ischigualasto Formation with biozones, and bracket the formation with 40Ar/39Ar ages. Some 230 million years ago in the Late Triassic (mid Carnian), the earliest dinosaurs were the dominant terrestrial carnivores and small herbivores in southwestern Pangaea. The extinction of nondinosaurian herbivores is sequential and is not linked to an increase in dinosaurian diversity, which weakens the predominant scenario for dinosaurian ascendancy as opportunistic replacement.
Fil: Martínez, Ricardo Néstor. Universidad Nacional de San Juan. Facultad de Ciencias Exactas, Físicas y Naturales. Instituto y Museo de Ciencias Naturales; Argentina
Fil: Sereno, Paul C.. University of Chicago; Estados Unidos
Fil: Alcober, Oscar. Universidad Nacional de San Juan. Facultad de Ciencias Exactas, Físicas y Naturales. Instituto y Museo de Ciencias Naturales; Argentina
Fil: Colombi, Carina Ester. Universidad Nacional de San Juan. Facultad de Ciencias Exactas, Físicas y Naturales. Instituto y Museo de Ciencias Naturales; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Renne, Paul R.. Berkeley Geochronology Center; Estados Unidos. University of California at Berkeley; Estados Unidos
Fil: Montañez, Isabel P.. University of California at Davis; Estados Unidos
Fil: Currie, Brian S.. Miami University; Estados Unidos
description Upper Triassic rocks in northwestern Argentina preserve the most complete record of dinosaurs before their rise to dominance in the Early Jurassic. Here, we describe a previously unidentified basal theropod, reassess its contemporary Eoraptor as a basal sauropodomorph, divide the faunal record of the Ischigualasto Formation with biozones, and bracket the formation with 40Ar/39Ar ages. Some 230 million years ago in the Late Triassic (mid Carnian), the earliest dinosaurs were the dominant terrestrial carnivores and small herbivores in southwestern Pangaea. The extinction of nondinosaurian herbivores is sequential and is not linked to an increase in dinosaurian diversity, which weakens the predominant scenario for dinosaurian ascendancy as opportunistic replacement.
publishDate 2011
dc.date.none.fl_str_mv 2011-01
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/11336/69202
Martínez, Ricardo Néstor; Sereno, Paul C.; Alcober, Oscar; Colombi, Carina Ester; Renne, Paul R.; et al.; A basal dinosaur from the dawn of the dinosaur era in southwestern pangaea; American Association for the Advancement of Science; Science; 331; 6014; 1-2011; 206-210
0036-8075
CONICET Digital
CONICET
url http://hdl.handle.net/11336/69202
identifier_str_mv Martínez, Ricardo Néstor; Sereno, Paul C.; Alcober, Oscar; Colombi, Carina Ester; Renne, Paul R.; et al.; A basal dinosaur from the dawn of the dinosaur era in southwestern pangaea; American Association for the Advancement of Science; Science; 331; 6014; 1-2011; 206-210
0036-8075
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1126/science.1198467
info:eu-repo/semantics/altIdentifier/url/http://science.sciencemag.org/content/331/6014/206
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 American Association for the Advancement of Science
publisher.none.fl_str_mv American Association for the Advancement of Science
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_ 1846083408010149888
score 13.22299

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