A New Clevosaurid from the Triassic (Carnian) of Brazil and the Rise of Sphenodontians in Gondwana

Autores
Hsiou, Annie S.; Nydam, Randall L.; Simões, Tiago R.; Pretto, Flávio A.; Onary, Silvio; Martinelli, Agustín Guillermo; Liparini, Alexandre; Romo de Vivar Martínez, Paulo Rodrigo; Soares, Marina; Schultz, Cesar; Caldwell, Michael Wayne
Año de publicación
2019
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The early evolution of lepidosaurs is marked by an extremely scarce fossil record during the Triassic. Importantly, most Triassic lepidosaur specimens are represented by disarticulated individuals from high energy accretion deposits in Laurasia, thus greatly hampering our understanding of the initial stages of lepidosaur evolution. Here, we describe the fragmentary remains of an associated skull and mandible of Clevosaurus hadroprodon sp. nov., a new taxon of sphenodontian lepidosaur from the Late Triassic (Carnian; 237–228 Mya) of Brazil. Referral to Sphenodontia is supported by the combined presence of a marginal dentition ankylosed to the apex of the dentary, maxilla, and premaxilla; the presence of ‘secondary bone’ at the bases of the marginal dentition; and a ventrally directed mental process at the symphysis of the dentary. Our phylogenetic analyses recover Clevosaurus hadroprodon as a clevosaurid, either in a polytomy with the Late Triassic to Early Jurassic Clevosaurus and Brachyrhinodon (under Bayesian inference), or nested among different species of Clevosaurus (under maximum parsimony). Clevosaurus hadroprodon represents the oldest known sphenodontian from Gondwana, and its clevosaurid relationships indicates that these sphenodontians achieved a widespread biogeographic distribution much earlier than previously thought.
Fil: Hsiou, Annie S.. Universidade de Sao Paulo; Brasil
Fil: Nydam, Randall L.. Midwestern University; Estados Unidos
Fil: Simões, Tiago R.. University of Alberta; Canadá. Harvard University; Estados Unidos
Fil: Pretto, Flávio A.. Universidade Federal de Santa Maria; Brasil
Fil: Onary, Silvio. Universidade de Sao Paulo; Brasil
Fil: Martinelli, Agustín Guillermo. Universidade Federal do Rio Grande do Sul; Brasil. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales "Bernardino Rivadavia"; Argentina
Fil: Liparini, Alexandre. Universidade Federal de Sergipe; Brasil
Fil: Romo de Vivar Martínez, Paulo Rodrigo. Universidade Federal do Rio Grande do Sul; Brasil
Fil: Soares, Marina. Universidade Federal do Rio Grande do Sul; Brasil
Fil: Schultz, Cesar. Universidade Federal do Rio Grande do Sul; Brasil
Fil: Caldwell, Michael Wayne. University of Alberta; Canadá
Materia
SPHENODONTIA
TRIASSIC
BRAZIL
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:11336/124636
Acceder
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network_name_str CONICET Digital (CONICET)
spelling A New Clevosaurid from the Triassic (Carnian) of Brazil and the Rise of Sphenodontians in GondwanaHsiou, Annie S.Nydam, Randall L.Simões, Tiago R.Pretto, Flávio A.Onary, SilvioMartinelli, Agustín GuillermoLiparini, AlexandreRomo de Vivar Martínez, Paulo RodrigoSoares, MarinaSchultz, CesarCaldwell, Michael WayneSPHENODONTIATRIASSICBRAZILhttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1The early evolution of lepidosaurs is marked by an extremely scarce fossil record during the Triassic. Importantly, most Triassic lepidosaur specimens are represented by disarticulated individuals from high energy accretion deposits in Laurasia, thus greatly hampering our understanding of the initial stages of lepidosaur evolution. Here, we describe the fragmentary remains of an associated skull and mandible of Clevosaurus hadroprodon sp. nov., a new taxon of sphenodontian lepidosaur from the Late Triassic (Carnian; 237–228 Mya) of Brazil. Referral to Sphenodontia is supported by the combined presence of a marginal dentition ankylosed to the apex of the dentary, maxilla, and premaxilla; the presence of ‘secondary bone’ at the bases of the marginal dentition; and a ventrally directed mental process at the symphysis of the dentary. Our phylogenetic analyses recover Clevosaurus hadroprodon as a clevosaurid, either in a polytomy with the Late Triassic to Early Jurassic Clevosaurus and Brachyrhinodon (under Bayesian inference), or nested among different species of Clevosaurus (under maximum parsimony). Clevosaurus hadroprodon represents the oldest known sphenodontian from Gondwana, and its clevosaurid relationships indicates that these sphenodontians achieved a widespread biogeographic distribution much earlier than previously thought.Fil: Hsiou, Annie S.. Universidade de Sao Paulo; BrasilFil: Nydam, Randall L.. Midwestern University; Estados UnidosFil: Simões, Tiago R.. University of Alberta; Canadá. Harvard University; Estados UnidosFil: Pretto, Flávio A.. Universidade Federal de Santa Maria; BrasilFil: Onary, Silvio. Universidade de Sao Paulo; BrasilFil: Martinelli, Agustín Guillermo. Universidade Federal do Rio Grande do Sul; Brasil. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales "Bernardino Rivadavia"; ArgentinaFil: Liparini, Alexandre. Universidade Federal de Sergipe; BrasilFil: Romo de Vivar Martínez, Paulo Rodrigo. Universidade Federal do Rio Grande do Sul; BrasilFil: Soares, Marina. Universidade Federal do Rio Grande do Sul; BrasilFil: Schultz, Cesar. Universidade Federal do Rio Grande do Sul; BrasilFil: Caldwell, Michael Wayne. University of Alberta; CanadáNature Publishing Group2019-12info: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/11336/124636Hsiou, Annie S.; Nydam, Randall L.; Simões, Tiago R.; Pretto, Flávio A.; Onary, Silvio; et al.; A New Clevosaurid from the Triassic (Carnian) of Brazil and the Rise of Sphenodontians in Gondwana; Nature Publishing Group; Scientific Reports; 9; 1; 12-2019; 1-122045-2322CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/http://www.nature.com/articles/s41598-019-48297-9info:eu-repo/semantics/altIdentifier/doi/10.1038/s41598-019-48297-9info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-15T15:33:05Zoai:ri.conicet.gov.ar:11336/124636instacron: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 15:33:05.472CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv A New Clevosaurid from the Triassic (Carnian) of Brazil and the Rise of Sphenodontians in Gondwana
title A New Clevosaurid from the Triassic (Carnian) of Brazil and the Rise of Sphenodontians in Gondwana
spellingShingle A New Clevosaurid from the Triassic (Carnian) of Brazil and the Rise of Sphenodontians in Gondwana
Hsiou, Annie S.
SPHENODONTIA
TRIASSIC
BRAZIL
title_short A New Clevosaurid from the Triassic (Carnian) of Brazil and the Rise of Sphenodontians in Gondwana
title_full A New Clevosaurid from the Triassic (Carnian) of Brazil and the Rise of Sphenodontians in Gondwana
title_fullStr A New Clevosaurid from the Triassic (Carnian) of Brazil and the Rise of Sphenodontians in Gondwana
title_full_unstemmed A New Clevosaurid from the Triassic (Carnian) of Brazil and the Rise of Sphenodontians in Gondwana
title_sort A New Clevosaurid from the Triassic (Carnian) of Brazil and the Rise of Sphenodontians in Gondwana
dc.creator.none.fl_str_mv Hsiou, Annie S.
Nydam, Randall L.
Simões, Tiago R.
Pretto, Flávio A.
Onary, Silvio
Martinelli, Agustín Guillermo
Liparini, Alexandre
Romo de Vivar Martínez, Paulo Rodrigo
Soares, Marina
Schultz, Cesar
Caldwell, Michael Wayne
author Hsiou, Annie S.
author_facet Hsiou, Annie S.
Nydam, Randall L.
Simões, Tiago R.
Pretto, Flávio A.
Onary, Silvio
Martinelli, Agustín Guillermo
Liparini, Alexandre
Romo de Vivar Martínez, Paulo Rodrigo
Soares, Marina
Schultz, Cesar
Caldwell, Michael Wayne
author_role author
author2 Nydam, Randall L.
Simões, Tiago R.
Pretto, Flávio A.
Onary, Silvio
Martinelli, Agustín Guillermo
Liparini, Alexandre
Romo de Vivar Martínez, Paulo Rodrigo
Soares, Marina
Schultz, Cesar
Caldwell, Michael Wayne
author2_role author
author
author
author
author
author
author
author
author
author
dc.subject.none.fl_str_mv SPHENODONTIA
TRIASSIC
BRAZIL
topic SPHENODONTIA
TRIASSIC
BRAZIL
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 early evolution of lepidosaurs is marked by an extremely scarce fossil record during the Triassic. Importantly, most Triassic lepidosaur specimens are represented by disarticulated individuals from high energy accretion deposits in Laurasia, thus greatly hampering our understanding of the initial stages of lepidosaur evolution. Here, we describe the fragmentary remains of an associated skull and mandible of Clevosaurus hadroprodon sp. nov., a new taxon of sphenodontian lepidosaur from the Late Triassic (Carnian; 237–228 Mya) of Brazil. Referral to Sphenodontia is supported by the combined presence of a marginal dentition ankylosed to the apex of the dentary, maxilla, and premaxilla; the presence of ‘secondary bone’ at the bases of the marginal dentition; and a ventrally directed mental process at the symphysis of the dentary. Our phylogenetic analyses recover Clevosaurus hadroprodon as a clevosaurid, either in a polytomy with the Late Triassic to Early Jurassic Clevosaurus and Brachyrhinodon (under Bayesian inference), or nested among different species of Clevosaurus (under maximum parsimony). Clevosaurus hadroprodon represents the oldest known sphenodontian from Gondwana, and its clevosaurid relationships indicates that these sphenodontians achieved a widespread biogeographic distribution much earlier than previously thought.
Fil: Hsiou, Annie S.. Universidade de Sao Paulo; Brasil
Fil: Nydam, Randall L.. Midwestern University; Estados Unidos
Fil: Simões, Tiago R.. University of Alberta; Canadá. Harvard University; Estados Unidos
Fil: Pretto, Flávio A.. Universidade Federal de Santa Maria; Brasil
Fil: Onary, Silvio. Universidade de Sao Paulo; Brasil
Fil: Martinelli, Agustín Guillermo. Universidade Federal do Rio Grande do Sul; Brasil. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales "Bernardino Rivadavia"; Argentina
Fil: Liparini, Alexandre. Universidade Federal de Sergipe; Brasil
Fil: Romo de Vivar Martínez, Paulo Rodrigo. Universidade Federal do Rio Grande do Sul; Brasil
Fil: Soares, Marina. Universidade Federal do Rio Grande do Sul; Brasil
Fil: Schultz, Cesar. Universidade Federal do Rio Grande do Sul; Brasil
Fil: Caldwell, Michael Wayne. University of Alberta; Canadá
description The early evolution of lepidosaurs is marked by an extremely scarce fossil record during the Triassic. Importantly, most Triassic lepidosaur specimens are represented by disarticulated individuals from high energy accretion deposits in Laurasia, thus greatly hampering our understanding of the initial stages of lepidosaur evolution. Here, we describe the fragmentary remains of an associated skull and mandible of Clevosaurus hadroprodon sp. nov., a new taxon of sphenodontian lepidosaur from the Late Triassic (Carnian; 237–228 Mya) of Brazil. Referral to Sphenodontia is supported by the combined presence of a marginal dentition ankylosed to the apex of the dentary, maxilla, and premaxilla; the presence of ‘secondary bone’ at the bases of the marginal dentition; and a ventrally directed mental process at the symphysis of the dentary. Our phylogenetic analyses recover Clevosaurus hadroprodon as a clevosaurid, either in a polytomy with the Late Triassic to Early Jurassic Clevosaurus and Brachyrhinodon (under Bayesian inference), or nested among different species of Clevosaurus (under maximum parsimony). Clevosaurus hadroprodon represents the oldest known sphenodontian from Gondwana, and its clevosaurid relationships indicates that these sphenodontians achieved a widespread biogeographic distribution much earlier than previously thought.
publishDate 2019
dc.date.none.fl_str_mv 2019-12
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/11336/124636
Hsiou, Annie S.; Nydam, Randall L.; Simões, Tiago R.; Pretto, Flávio A.; Onary, Silvio; et al.; A New Clevosaurid from the Triassic (Carnian) of Brazil and the Rise of Sphenodontians in Gondwana; Nature Publishing Group; Scientific Reports; 9; 1; 12-2019; 1-12
2045-2322
CONICET Digital
CONICET
url http://hdl.handle.net/11336/124636
identifier_str_mv Hsiou, Annie S.; Nydam, Randall L.; Simões, Tiago R.; Pretto, Flávio A.; Onary, Silvio; et al.; A New Clevosaurid from the Triassic (Carnian) of Brazil and the Rise of Sphenodontians in Gondwana; Nature Publishing Group; Scientific Reports; 9; 1; 12-2019; 1-12
2045-2322
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/http://www.nature.com/articles/s41598-019-48297-9
info:eu-repo/semantics/altIdentifier/doi/10.1038/s41598-019-48297-9
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 Nature Publishing Group
publisher.none.fl_str_mv Nature Publishing Group
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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