A new, nearly complete stem turtle from the Jurassic of South America with implications for turtle evolution

Autores
Sterli, Juliana
Año de publicación
2008
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Turtles are known since the Upper Triassic (210 million years old) however fossils recording the first steps of turtle evolution are scarce and often fragmentary. As a consequence, the main discussion nowadays is if living turtles (Testudines) originated during the Late Triassic (210 myo) or during the Middle to Late Jurassic (~160 myo). The discovery of the new fossil turtle (Condorchelys antiqua gen. et sp. nov.) from the Middle to Upper Jurassic (~160-146 myo) of South America (Patagonia, Argentina) presented here sheds new light on early turtle evolution. An updated cladistic analysis of turtles shows that C. antiqua and other fossil turtles are not crown turtles, but are stem turtles. This cladistic analysis also shows that stem turtles were more diverse than previously thought and that until the Middle to Upper Jurassic there were turtles without the modern jaw closure mechanism.
Fil: Sterli, Juliana. Provincia de Mendoza. Municipalidad de San Rafael. Museo de Historia Natural de San Rafael; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Materia
Testudinata
anatomy
phylogeny
Cañadón Asfalto Formation
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:11336/244619
Acceder
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network_acronym_str CONICETDig
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network_name_str CONICET Digital (CONICET)
spelling A new, nearly complete stem turtle from the Jurassic of South America with implications for turtle evolutionSterli, JulianaTestudinataanatomyphylogenyCañadón Asfalto Formationhttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1Turtles are known since the Upper Triassic (210 million years old) however fossils recording the first steps of turtle evolution are scarce and often fragmentary. As a consequence, the main discussion nowadays is if living turtles (Testudines) originated during the Late Triassic (210 myo) or during the Middle to Late Jurassic (~160 myo). The discovery of the new fossil turtle (Condorchelys antiqua gen. et sp. nov.) from the Middle to Upper Jurassic (~160-146 myo) of South America (Patagonia, Argentina) presented here sheds new light on early turtle evolution. An updated cladistic analysis of turtles shows that C. antiqua and other fossil turtles are not crown turtles, but are stem turtles. This cladistic analysis also shows that stem turtles were more diverse than previously thought and that until the Middle to Upper Jurassic there were turtles without the modern jaw closure mechanism.Fil: Sterli, Juliana. Provincia de Mendoza. Municipalidad de San Rafael. Museo de Historia Natural de San Rafael; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaThe Royal Society2008-03info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/244619Sterli, Juliana; A new, nearly complete stem turtle from the Jurassic of South America with implications for turtle evolution; The Royal Society; Biology Letters; 4; 3; 3-2008; 286-2891744-9561CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://royalsocietypublishing.org/doi/10.1098/rsbl.2008.0022info:eu-repo/semantics/altIdentifier/doi/10.1098/rsbl.2008.0022info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:09:07Zoai:ri.conicet.gov.ar:11336/244619instacron: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 10:09:07.503CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv A new, nearly complete stem turtle from the Jurassic of South America with implications for turtle evolution
title A new, nearly complete stem turtle from the Jurassic of South America with implications for turtle evolution
spellingShingle A new, nearly complete stem turtle from the Jurassic of South America with implications for turtle evolution
Sterli, Juliana
Testudinata
anatomy
phylogeny
Cañadón Asfalto Formation
title_short A new, nearly complete stem turtle from the Jurassic of South America with implications for turtle evolution
title_full A new, nearly complete stem turtle from the Jurassic of South America with implications for turtle evolution
title_fullStr A new, nearly complete stem turtle from the Jurassic of South America with implications for turtle evolution
title_full_unstemmed A new, nearly complete stem turtle from the Jurassic of South America with implications for turtle evolution
title_sort A new, nearly complete stem turtle from the Jurassic of South America with implications for turtle evolution
dc.creator.none.fl_str_mv Sterli, Juliana
author Sterli, Juliana
author_facet Sterli, Juliana
author_role author
dc.subject.none.fl_str_mv Testudinata
anatomy
phylogeny
Cañadón Asfalto Formation
topic Testudinata
anatomy
phylogeny
Cañadón Asfalto Formation
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Turtles are known since the Upper Triassic (210 million years old) however fossils recording the first steps of turtle evolution are scarce and often fragmentary. As a consequence, the main discussion nowadays is if living turtles (Testudines) originated during the Late Triassic (210 myo) or during the Middle to Late Jurassic (~160 myo). The discovery of the new fossil turtle (Condorchelys antiqua gen. et sp. nov.) from the Middle to Upper Jurassic (~160-146 myo) of South America (Patagonia, Argentina) presented here sheds new light on early turtle evolution. An updated cladistic analysis of turtles shows that C. antiqua and other fossil turtles are not crown turtles, but are stem turtles. This cladistic analysis also shows that stem turtles were more diverse than previously thought and that until the Middle to Upper Jurassic there were turtles without the modern jaw closure mechanism.
Fil: Sterli, Juliana. Provincia de Mendoza. Municipalidad de San Rafael. Museo de Historia Natural de San Rafael; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
description Turtles are known since the Upper Triassic (210 million years old) however fossils recording the first steps of turtle evolution are scarce and often fragmentary. As a consequence, the main discussion nowadays is if living turtles (Testudines) originated during the Late Triassic (210 myo) or during the Middle to Late Jurassic (~160 myo). The discovery of the new fossil turtle (Condorchelys antiqua gen. et sp. nov.) from the Middle to Upper Jurassic (~160-146 myo) of South America (Patagonia, Argentina) presented here sheds new light on early turtle evolution. An updated cladistic analysis of turtles shows that C. antiqua and other fossil turtles are not crown turtles, but are stem turtles. This cladistic analysis also shows that stem turtles were more diverse than previously thought and that until the Middle to Upper Jurassic there were turtles without the modern jaw closure mechanism.
publishDate 2008
dc.date.none.fl_str_mv 2008-03
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/11336/244619
Sterli, Juliana; A new, nearly complete stem turtle from the Jurassic of South America with implications for turtle evolution; The Royal Society; Biology Letters; 4; 3; 3-2008; 286-289
1744-9561
CONICET Digital
CONICET
url http://hdl.handle.net/11336/244619
identifier_str_mv Sterli, Juliana; A new, nearly complete stem turtle from the Jurassic of South America with implications for turtle evolution; The Royal Society; Biology Letters; 4; 3; 3-2008; 286-289
1744-9561
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://royalsocietypublishing.org/doi/10.1098/rsbl.2008.0022
info:eu-repo/semantics/altIdentifier/doi/10.1098/rsbl.2008.0022
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 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
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_ 1844613965740507136
score 13.070432

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