A Late Cretaceous tuatara (Lepidosauria: Sphenodontinae) from South America

Autores
Apesteguía, Sebastián; Jones, M. E. H.
Año de publicación
2012
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Rhynchocephalia achieved a global distribution during the Mesozoic but the history of sphenodontines, the clade containing the extant genus Sphenodon (the New Zealand tuatara), remains poorly understood. Here, we describe a partial maxilla from the Late Cretaceous of Argentina bearing teeth that closely resemble those of modern Sphenodon. This material helps to fill in a notable gap in the fossil history of lepidosaurs because it represents the first evidence of a sphenodontine from South America and increases the number of known Late Cretaceous rhynchocephalian taxa from that region. The morphological disparity encompassed by these records is consistent with suggestions that rhynchocephalians remained diverse in the Late Cretaceous of South America despite a concurrent disappearance from Laurasia. Moreover, the new record supports the hypothesis that sphenodontines were once found widely throughout Gondwana, before its constituent landmasses began to separate about 80 million years ago. The extant Sphenodon probably represents a biogeographic remnant of this distribution, but whether its relatively large size and its ability to remain active at cold temperatures reflects a high latitude ancestry requires further examination.
Fil: Apesteguía, Sebastián. Universidad Maimónides. Área de Investigaciones Biomédicas y Biotecnológicas. Centro de Estudios Biomédicos, Biotecnológicos, Ambientales y de Diagnóstico; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Jones, M. E. H.. Colegio Universitario de Londres; Reino Unido
Materia
CRETACEOUS
GONDWANA
PATAGONIA
SPHENODON
SPHENODONTINAE
TUATARA
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:11336/189661

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spelling A Late Cretaceous tuatara (Lepidosauria: Sphenodontinae) from South AmericaApesteguía, SebastiánJones, M. E. H.CRETACEOUSGONDWANAPATAGONIASPHENODONSPHENODONTINAETUATARAhttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1Rhynchocephalia achieved a global distribution during the Mesozoic but the history of sphenodontines, the clade containing the extant genus Sphenodon (the New Zealand tuatara), remains poorly understood. Here, we describe a partial maxilla from the Late Cretaceous of Argentina bearing teeth that closely resemble those of modern Sphenodon. This material helps to fill in a notable gap in the fossil history of lepidosaurs because it represents the first evidence of a sphenodontine from South America and increases the number of known Late Cretaceous rhynchocephalian taxa from that region. The morphological disparity encompassed by these records is consistent with suggestions that rhynchocephalians remained diverse in the Late Cretaceous of South America despite a concurrent disappearance from Laurasia. Moreover, the new record supports the hypothesis that sphenodontines were once found widely throughout Gondwana, before its constituent landmasses began to separate about 80 million years ago. The extant Sphenodon probably represents a biogeographic remnant of this distribution, but whether its relatively large size and its ability to remain active at cold temperatures reflects a high latitude ancestry requires further examination.Fil: Apesteguía, Sebastián. Universidad Maimónides. Área de Investigaciones Biomédicas y Biotecnológicas. Centro de Estudios Biomédicos, Biotecnológicos, Ambientales y de Diagnóstico; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Jones, M. E. H.. Colegio Universitario de Londres; Reino UnidoAcademic Press Ltd - Elsevier Science Ltd2012-10info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/189661Apesteguía, Sebastián; Jones, M. E. H.; A Late Cretaceous tuatara (Lepidosauria: Sphenodontinae) from South America; Academic Press Ltd - Elsevier Science Ltd; Cretaceous Research; 34; 10-2012; 154-1600195-6671CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/abs/pii/S0195667111001649info:eu-repo/semantics/altIdentifier/doi/10.1016/j.cretres.2011.10.014info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T09:56:37Zoai:ri.conicet.gov.ar:11336/189661instacron: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 09:56:37.528CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv A Late Cretaceous tuatara (Lepidosauria: Sphenodontinae) from South America
title A Late Cretaceous tuatara (Lepidosauria: Sphenodontinae) from South America
spellingShingle A Late Cretaceous tuatara (Lepidosauria: Sphenodontinae) from South America
Apesteguía, Sebastián
CRETACEOUS
GONDWANA
PATAGONIA
SPHENODON
SPHENODONTINAE
TUATARA
title_short A Late Cretaceous tuatara (Lepidosauria: Sphenodontinae) from South America
title_full A Late Cretaceous tuatara (Lepidosauria: Sphenodontinae) from South America
title_fullStr A Late Cretaceous tuatara (Lepidosauria: Sphenodontinae) from South America
title_full_unstemmed A Late Cretaceous tuatara (Lepidosauria: Sphenodontinae) from South America
title_sort A Late Cretaceous tuatara (Lepidosauria: Sphenodontinae) from South America
dc.creator.none.fl_str_mv Apesteguía, Sebastián
Jones, M. E. H.
author Apesteguía, Sebastián
author_facet Apesteguía, Sebastián
Jones, M. E. H.
author_role author
author2 Jones, M. E. H.
author2_role author
dc.subject.none.fl_str_mv CRETACEOUS
GONDWANA
PATAGONIA
SPHENODON
SPHENODONTINAE
TUATARA
topic CRETACEOUS
GONDWANA
PATAGONIA
SPHENODON
SPHENODONTINAE
TUATARA
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Rhynchocephalia achieved a global distribution during the Mesozoic but the history of sphenodontines, the clade containing the extant genus Sphenodon (the New Zealand tuatara), remains poorly understood. Here, we describe a partial maxilla from the Late Cretaceous of Argentina bearing teeth that closely resemble those of modern Sphenodon. This material helps to fill in a notable gap in the fossil history of lepidosaurs because it represents the first evidence of a sphenodontine from South America and increases the number of known Late Cretaceous rhynchocephalian taxa from that region. The morphological disparity encompassed by these records is consistent with suggestions that rhynchocephalians remained diverse in the Late Cretaceous of South America despite a concurrent disappearance from Laurasia. Moreover, the new record supports the hypothesis that sphenodontines were once found widely throughout Gondwana, before its constituent landmasses began to separate about 80 million years ago. The extant Sphenodon probably represents a biogeographic remnant of this distribution, but whether its relatively large size and its ability to remain active at cold temperatures reflects a high latitude ancestry requires further examination.
Fil: Apesteguía, Sebastián. Universidad Maimónides. Área de Investigaciones Biomédicas y Biotecnológicas. Centro de Estudios Biomédicos, Biotecnológicos, Ambientales y de Diagnóstico; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Jones, M. E. H.. Colegio Universitario de Londres; Reino Unido
description Rhynchocephalia achieved a global distribution during the Mesozoic but the history of sphenodontines, the clade containing the extant genus Sphenodon (the New Zealand tuatara), remains poorly understood. Here, we describe a partial maxilla from the Late Cretaceous of Argentina bearing teeth that closely resemble those of modern Sphenodon. This material helps to fill in a notable gap in the fossil history of lepidosaurs because it represents the first evidence of a sphenodontine from South America and increases the number of known Late Cretaceous rhynchocephalian taxa from that region. The morphological disparity encompassed by these records is consistent with suggestions that rhynchocephalians remained diverse in the Late Cretaceous of South America despite a concurrent disappearance from Laurasia. Moreover, the new record supports the hypothesis that sphenodontines were once found widely throughout Gondwana, before its constituent landmasses began to separate about 80 million years ago. The extant Sphenodon probably represents a biogeographic remnant of this distribution, but whether its relatively large size and its ability to remain active at cold temperatures reflects a high latitude ancestry requires further examination.
publishDate 2012
dc.date.none.fl_str_mv 2012-10
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/11336/189661
Apesteguía, Sebastián; Jones, M. E. H.; A Late Cretaceous tuatara (Lepidosauria: Sphenodontinae) from South America; Academic Press Ltd - Elsevier Science Ltd; Cretaceous Research; 34; 10-2012; 154-160
0195-6671
CONICET Digital
CONICET
url http://hdl.handle.net/11336/189661
identifier_str_mv Apesteguía, Sebastián; Jones, M. E. H.; A Late Cretaceous tuatara (Lepidosauria: Sphenodontinae) from South America; Academic Press Ltd - Elsevier Science Ltd; Cretaceous Research; 34; 10-2012; 154-160
0195-6671
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://www.sciencedirect.com/science/article/abs/pii/S0195667111001649
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.cretres.2011.10.014
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 Academic Press Ltd - Elsevier Science Ltd
publisher.none.fl_str_mv Academic Press Ltd - Elsevier Science Ltd
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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