The youngest South American rhynchocephalian, a survivor of the K/Pg extinction

Rhynchocephalian lepidosaurs, though once widespread worldwide, are represented today only by the tuatara (Sphenodon) of New Zealand. After their apparent early Cretaceous extinction in Laurasia, they survived in southern continents. In South America, they are represented by different lineages of La...

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Detalhes bibliográficos
Autores: Apesteguía, Sebastián, Gomez, Raul Orencio, Rougier, Guillermo W.
Formato: artículo
Estado:Versión publicada
Fecha de publicación:2014
País:Argentina
Recursos:Consejo Nacional de Investigaciones Científicas y Técnicas
Repositorio:CONICET Digital (CONICET)
Idioma:inglés
OAI Identifier:oai:ri.conicet.gov.ar:11336/6525
Acesso em linha:http://hdl.handle.net/11336/6525
Access Level:acceso abierto
Palavra-chave:Cretaceous/Palaeogene Boundary
Opisthodontia
Palaeocene
Patagonia
Rhynchocephalia
https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
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oai_identifier_str oai:ri.conicet.gov.ar:11336/6525
network_acronym_str AR
network_name_str Argentina
repository_id_str
spelling The youngest South American rhynchocephalian, a survivor of the K/Pg extinctionApesteguía, SebastiánGomez, Raul OrencioRougier, Guillermo W.Cretaceous/Palaeogene BoundaryOpisthodontiaPalaeocenePatagoniaRhynchocephaliahttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1Rhynchocephalian lepidosaurs, though once widespread worldwide, are represented today only by the tuatara (Sphenodon) of New Zealand. After their apparent early Cretaceous extinction in Laurasia, they survived in southern continents. In South America, they are represented by different lineages of Late Cretaceous eupropalinal forms until their disappearance by the Cretaceous/Palaeogene (K/Pg) boundary. We describe here the only unambiguous Palaeogene rhynchocephalian from South America; this new taxon is a younger species of the otherwise Late Cretaceous genus Kawasphenodon. Phylogenetic analysis confirms the allocation of the genus to the clade Opisthodontia. The new form from the Palaeogene of Central Patagonia is much smaller than Kawasphenodon expectatus from the Late Cretaceous of Northern Patagonia. The new species shows that at least one group of rhynchocephalians not related to the extant Sphenodon survived in South America beyond the K/Pg extinction event. Furthermore, it adds to other trans-K/Pg ectotherm tetrapod taxa, suggesting that the end-Cretaceous extinction affected Patagonia more benignly than the Laurasian landmasses.Fil: Apesteguía, Sebastián. Universidad Maimónides. Area de Investigaciones Biomédicas y Biotecnológicas. Centro de Estudios Biomédicos, Biotecnológicos, Ambientales y de Diagnóstico; ArgentinaFil: Gomez, Raul Orencio. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; ArgentinaFil: Rougier, Guillermo W.. University Of Kentucky; Estados UnidosThe Royal Society2014-08info: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/11336/6525Apesteguía, Sebastián; Gomez, Raul Orencio; Rougier, Guillermo W.; The youngest South American rhynchocephalian, a survivor of the K/Pg extinction; The Royal Society; Proceedings of the Royal Society of London. Series B: Biological Sciences; 281; 1792; 8-2014; 1-60962-8452enginfo:eu-repo/semantics/altIdentifier/url/http://rspb.royalsocietypublishing.org/content/281/1792/20140811info:eu-repo/semantics/altIdentifier/doi/10.1098/rspb.2014.0811info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2024-05-08T13:56:04Zoai:ri.conicet.gov.ar:11336/6525instacron: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:34982024-05-08 13:56:04.471CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv The youngest South American rhynchocephalian, a survivor of the K/Pg extinction
title The youngest South American rhynchocephalian, a survivor of the K/Pg extinction
spellingShingle The youngest South American rhynchocephalian, a survivor of the K/Pg extinction
Apesteguía, Sebastián
Cretaceous/Palaeogene Boundary
Opisthodontia
Palaeocene
Patagonia
Rhynchocephalia
https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
title_short The youngest South American rhynchocephalian, a survivor of the K/Pg extinction
title_full The youngest South American rhynchocephalian, a survivor of the K/Pg extinction
title_fullStr The youngest South American rhynchocephalian, a survivor of the K/Pg extinction
title_full_unstemmed The youngest South American rhynchocephalian, a survivor of the K/Pg extinction
title_sort The youngest South American rhynchocephalian, a survivor of the K/Pg extinction
dc.creator.none.fl_str_mv Apesteguía, Sebastián
Gomez, Raul Orencio
Rougier, Guillermo W.
author Apesteguía, Sebastián
author_facet Apesteguía, Sebastián
Gomez, Raul Orencio
Rougier, Guillermo W.
author_role author
author2 Gomez, Raul Orencio
Rougier, Guillermo W.
author2_role author
author
dc.subject.none.fl_str_mv Cretaceous/Palaeogene Boundary
Opisthodontia
Palaeocene
Patagonia
Rhynchocephalia
https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
topic Cretaceous/Palaeogene Boundary
Opisthodontia
Palaeocene
Patagonia
Rhynchocephalia
https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
description Rhynchocephalian lepidosaurs, though once widespread worldwide, are represented today only by the tuatara (Sphenodon) of New Zealand. After their apparent early Cretaceous extinction in Laurasia, they survived in southern continents. In South America, they are represented by different lineages of Late Cretaceous eupropalinal forms until their disappearance by the Cretaceous/Palaeogene (K/Pg) boundary. We describe here the only unambiguous Palaeogene rhynchocephalian from South America; this new taxon is a younger species of the otherwise Late Cretaceous genus Kawasphenodon. Phylogenetic analysis confirms the allocation of the genus to the clade Opisthodontia. The new form from the Palaeogene of Central Patagonia is much smaller than Kawasphenodon expectatus from the Late Cretaceous of Northern Patagonia. The new species shows that at least one group of rhynchocephalians not related to the extant Sphenodon survived in South America beyond the K/Pg extinction event. Furthermore, it adds to other trans-K/Pg ectotherm tetrapod taxa, suggesting that the end-Cretaceous extinction affected Patagonia more benignly than the Laurasian landmasses.
publishDate 2014
dc.date.none.fl_str_mv 2014-08
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/11336/6525
Apesteguía, Sebastián; Gomez, Raul Orencio; Rougier, Guillermo W.; The youngest South American rhynchocephalian, a survivor of the K/Pg extinction; The Royal Society; Proceedings of the Royal Society of London. Series B: Biological Sciences; 281; 1792; 8-2014; 1-6
0962-8452
url http://hdl.handle.net/11336/6525
identifier_str_mv Apesteguía, Sebastián; Gomez, Raul Orencio; Rougier, Guillermo W.; The youngest South American rhynchocephalian, a survivor of the K/Pg extinction; The Royal Society; Proceedings of the Royal Society of London. Series B: Biological Sciences; 281; 1792; 8-2014; 1-6
0962-8452
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/http://rspb.royalsocietypublishing.org/content/281/1792/20140811
info:eu-repo/semantics/altIdentifier/doi/10.1098/rspb.2014.0811
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 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
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
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 15,812429

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