An exceptional fossil skull from South America and the origins of the archosauriform radiation
Autor(a) principal: | |
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Data de Publicação: | 2016 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UFRGS |
Texto Completo: | http://hdl.handle.net/10183/225576 |
Resumo: | Birds, dinosaurs, crocodilians, pterosaurs and their close relatives form the highly diverse clade Archosauriformes. Archosauriforms have a deep evolutionary history, originating in the late Permian, prior to the end-Permian mass extinction, and radiating in the Triassic to dominate Mesozoic ecosystems. However, the origins of this clade and its extraordinarily successful body plan remain obscure. Here, we describe an exceptionally preserved fossil skull from the Lower Triassic of Brazil, representing a new species, Teyujagua paradoxa, transitional in morphology between archosauriforms and more primitive reptiles. This skull reveals for the first time the mosaic assembly of key features of the archosauriform skull, including the antorbital and mandibular fenestrae, serrated teeth, and closed lower temporal bar. Phylogenetic analysis recovers Teyujagua as the sister taxon to Archosauriformes, and is congruent with a two-phase model of early archosauriform evolution, in response to two mass extinctions occurring at the end of the Guadalupian and the Permian. |
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Pinheiro, Felipe LimaFrança, Marco Aurélio Gallo deSantos, Marcel Baêta LacerdaButler, Richard J.Schultz, Cesar Leandro2021-08-12T04:43:47Z20162045-2322http://hdl.handle.net/10183/225576001049251Birds, dinosaurs, crocodilians, pterosaurs and their close relatives form the highly diverse clade Archosauriformes. Archosauriforms have a deep evolutionary history, originating in the late Permian, prior to the end-Permian mass extinction, and radiating in the Triassic to dominate Mesozoic ecosystems. However, the origins of this clade and its extraordinarily successful body plan remain obscure. Here, we describe an exceptionally preserved fossil skull from the Lower Triassic of Brazil, representing a new species, Teyujagua paradoxa, transitional in morphology between archosauriforms and more primitive reptiles. This skull reveals for the first time the mosaic assembly of key features of the archosauriform skull, including the antorbital and mandibular fenestrae, serrated teeth, and closed lower temporal bar. Phylogenetic analysis recovers Teyujagua as the sister taxon to Archosauriformes, and is congruent with a two-phase model of early archosauriform evolution, in response to two mass extinctions occurring at the end of the Guadalupian and the Permian.application/pdfengScientific reports. London. Vol. 6 ( 2016), e 22817Permo-triassicoTriassico inferiorFilogenéticaAn exceptional fossil skull from South America and the origins of the archosauriform radiationEstrangeiroinfo:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da UFRGSinstname:Universidade Federal do Rio Grande do Sul (UFRGS)instacron:UFRGSTEXT001049251.pdf.txt001049251.pdf.txtExtracted Texttext/plain26820http://www.lume.ufrgs.br/bitstream/10183/225576/2/001049251.pdf.txt8e5c3f6d7f2b803943977150d752ea51MD52ORIGINAL001049251.pdfTexto completo (inglês)application/pdf3796976http://www.lume.ufrgs.br/bitstream/10183/225576/1/001049251.pdf2df6fbacaccfc88bb9537262a563a050MD5110183/2255762021-08-18 04:38:47.133173oai:www.lume.ufrgs.br:10183/225576Repositório de PublicaçõesPUBhttps://lume.ufrgs.br/oai/requestopendoar:2021-08-18T07:38:47Repositório Institucional da UFRGS - Universidade Federal do Rio Grande do Sul (UFRGS)false |
dc.title.pt_BR.fl_str_mv |
An exceptional fossil skull from South America and the origins of the archosauriform radiation |
title |
An exceptional fossil skull from South America and the origins of the archosauriform radiation |
spellingShingle |
An exceptional fossil skull from South America and the origins of the archosauriform radiation Pinheiro, Felipe Lima Permo-triassico Triassico inferior Filogenética |
title_short |
An exceptional fossil skull from South America and the origins of the archosauriform radiation |
title_full |
An exceptional fossil skull from South America and the origins of the archosauriform radiation |
title_fullStr |
An exceptional fossil skull from South America and the origins of the archosauriform radiation |
title_full_unstemmed |
An exceptional fossil skull from South America and the origins of the archosauriform radiation |
title_sort |
An exceptional fossil skull from South America and the origins of the archosauriform radiation |
author |
Pinheiro, Felipe Lima |
author_facet |
Pinheiro, Felipe Lima França, Marco Aurélio Gallo de Santos, Marcel Baêta Lacerda Butler, Richard J. Schultz, Cesar Leandro |
author_role |
author |
author2 |
França, Marco Aurélio Gallo de Santos, Marcel Baêta Lacerda Butler, Richard J. Schultz, Cesar Leandro |
author2_role |
author author author author |
dc.contributor.author.fl_str_mv |
Pinheiro, Felipe Lima França, Marco Aurélio Gallo de Santos, Marcel Baêta Lacerda Butler, Richard J. Schultz, Cesar Leandro |
dc.subject.por.fl_str_mv |
Permo-triassico Triassico inferior Filogenética |
topic |
Permo-triassico Triassico inferior Filogenética |
description |
Birds, dinosaurs, crocodilians, pterosaurs and their close relatives form the highly diverse clade Archosauriformes. Archosauriforms have a deep evolutionary history, originating in the late Permian, prior to the end-Permian mass extinction, and radiating in the Triassic to dominate Mesozoic ecosystems. However, the origins of this clade and its extraordinarily successful body plan remain obscure. Here, we describe an exceptionally preserved fossil skull from the Lower Triassic of Brazil, representing a new species, Teyujagua paradoxa, transitional in morphology between archosauriforms and more primitive reptiles. This skull reveals for the first time the mosaic assembly of key features of the archosauriform skull, including the antorbital and mandibular fenestrae, serrated teeth, and closed lower temporal bar. Phylogenetic analysis recovers Teyujagua as the sister taxon to Archosauriformes, and is congruent with a two-phase model of early archosauriform evolution, in response to two mass extinctions occurring at the end of the Guadalupian and the Permian. |
publishDate |
2016 |
dc.date.issued.fl_str_mv |
2016 |
dc.date.accessioned.fl_str_mv |
2021-08-12T04:43:47Z |
dc.type.driver.fl_str_mv |
Estrangeiro info:eu-repo/semantics/article |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
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publishedVersion |
dc.identifier.uri.fl_str_mv |
http://hdl.handle.net/10183/225576 |
dc.identifier.issn.pt_BR.fl_str_mv |
2045-2322 |
dc.identifier.nrb.pt_BR.fl_str_mv |
001049251 |
identifier_str_mv |
2045-2322 001049251 |
url |
http://hdl.handle.net/10183/225576 |
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eng |
language |
eng |
dc.relation.ispartof.pt_BR.fl_str_mv |
Scientific reports. London. Vol. 6 ( 2016), e 22817 |
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info:eu-repo/semantics/openAccess |
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openAccess |
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application/pdf |
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