Unexpected new lizard from the Late Cretaceous of southern South America sheds light on Gondwanan squamate diversity

Autores
Martinelli, Agustín Guillermo; Agnolin, Federico; Ezcurra, Martin Daniel
Año de publicación
2021
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The record of Cretaceous terrestrial lizards (Squamata) in South America is patchy, with seven species described from north-eastern and south-eastern Brazil, and few isolated records of iguanians and scincomorphans from the Argentinian Patagonia. Herein we describe a new genus and species of Cretaceous lizard, Paleochelco occultato gen. et sp. nov., based on a partial skull (MACN-Pv-N 120) discovered about three decades ago that was unnoticed in the Colección Paleovertebrados of the Museo Argentino de Ciencias Naturales ?Bernardino Rivadavia?. It comes from rocks of the Upper Cretaceous Bajo de la Carpa Formation (Neuquén Group) exposed at the Campus of the Universidad Nacional del Comahue, north of Neuquén City (Neuquén Province). The new taxon was included into a broad phylogenetic dataset of squamates and it was recovered around the base of Polyglyphanodontia in a constrained analysis using a total-evidence backbone. By contrast, the same, but topologically unconstrained analysis found Paleochelco occultato also around the base of Polyglyphanodontia but alternatively as the sister taxon to Polyglyphanodontia + Scleroglossa or as one of the sister taxa to the Mosasauria + Scleroglossa clade. The new finding, as well as other records from Argentina and Brazil, highlights a complex, still unrecovered, evolutionary history for lizards in the Mesozoic of South America.
Fil: Martinelli, Agustín Guillermo. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales "Bernardino Rivadavia"; Argentina
Fil: Agnolin, Federico. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales "Bernardino Rivadavia"; Argentina
Fil: Ezcurra, Martin Daniel. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales "Bernardino Rivadavia"; Argentina
Materia
Squamata
Upper Cretaceous
Patagonia
Neuquen Group
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/167951
Acceder
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network_name_str CONICET Digital (CONICET)
spelling Unexpected new lizard from the Late Cretaceous of southern South America sheds light on Gondwanan squamate diversityMartinelli, Agustín GuillermoAgnolin, FedericoEzcurra, Martin DanielSquamataUpper CretaceousPatagoniaNeuquen Grouphttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1The record of Cretaceous terrestrial lizards (Squamata) in South America is patchy, with seven species described from north-eastern and south-eastern Brazil, and few isolated records of iguanians and scincomorphans from the Argentinian Patagonia. Herein we describe a new genus and species of Cretaceous lizard, Paleochelco occultato gen. et sp. nov., based on a partial skull (MACN-Pv-N 120) discovered about three decades ago that was unnoticed in the Colección Paleovertebrados of the Museo Argentino de Ciencias Naturales ?Bernardino Rivadavia?. It comes from rocks of the Upper Cretaceous Bajo de la Carpa Formation (Neuquén Group) exposed at the Campus of the Universidad Nacional del Comahue, north of Neuquén City (Neuquén Province). The new taxon was included into a broad phylogenetic dataset of squamates and it was recovered around the base of Polyglyphanodontia in a constrained analysis using a total-evidence backbone. By contrast, the same, but topologically unconstrained analysis found Paleochelco occultato also around the base of Polyglyphanodontia but alternatively as the sister taxon to Polyglyphanodontia + Scleroglossa or as one of the sister taxa to the Mosasauria + Scleroglossa clade. The new finding, as well as other records from Argentina and Brazil, highlights a complex, still unrecovered, evolutionary history for lizards in the Mesozoic of South America.Fil: Martinelli, Agustín Guillermo. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales "Bernardino Rivadavia"; ArgentinaFil: Agnolin, Federico. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales "Bernardino Rivadavia"; ArgentinaFil: Ezcurra, Martin Daniel. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales "Bernardino Rivadavia"; ArgentinaMuseo Argentino de Ciencias Naturales "Bernardino Rivadavia"2021-06info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/167951Martinelli, Agustín Guillermo; Agnolin, Federico; Ezcurra, Martin Daniel; Unexpected new lizard from the Late Cretaceous of southern South America sheds light on Gondwanan squamate diversity; Museo Argentino de Ciencias Naturales "Bernardino Rivadavia"; Revista del Museo Argentino de Ciencias Naturales n. s.; 23; 1; 6-2021; 57-801514-51581853-0400CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.22179/REVMACN.23.716info:eu-repo/semantics/altIdentifier/url/http://revista.macn.gob.ar/ojs/index.php/RevMus/article/view/716info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-17T10:56:41Zoai:ri.conicet.gov.ar:11336/167951instacron: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:34982025-09-17 10:56:42.093CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Unexpected new lizard from the Late Cretaceous of southern South America sheds light on Gondwanan squamate diversity
title Unexpected new lizard from the Late Cretaceous of southern South America sheds light on Gondwanan squamate diversity
spellingShingle Unexpected new lizard from the Late Cretaceous of southern South America sheds light on Gondwanan squamate diversity
Martinelli, Agustín Guillermo
Squamata
Upper Cretaceous
Patagonia
Neuquen Group
title_short Unexpected new lizard from the Late Cretaceous of southern South America sheds light on Gondwanan squamate diversity
title_full Unexpected new lizard from the Late Cretaceous of southern South America sheds light on Gondwanan squamate diversity
title_fullStr Unexpected new lizard from the Late Cretaceous of southern South America sheds light on Gondwanan squamate diversity
title_full_unstemmed Unexpected new lizard from the Late Cretaceous of southern South America sheds light on Gondwanan squamate diversity
title_sort Unexpected new lizard from the Late Cretaceous of southern South America sheds light on Gondwanan squamate diversity
dc.creator.none.fl_str_mv Martinelli, Agustín Guillermo
Agnolin, Federico
Ezcurra, Martin Daniel
author Martinelli, Agustín Guillermo
author_facet Martinelli, Agustín Guillermo
Agnolin, Federico
Ezcurra, Martin Daniel
author_role author
author2 Agnolin, Federico
Ezcurra, Martin Daniel
author2_role author
author
dc.subject.none.fl_str_mv Squamata
Upper Cretaceous
Patagonia
Neuquen Group
topic Squamata
Upper Cretaceous
Patagonia
Neuquen Group
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 record of Cretaceous terrestrial lizards (Squamata) in South America is patchy, with seven species described from north-eastern and south-eastern Brazil, and few isolated records of iguanians and scincomorphans from the Argentinian Patagonia. Herein we describe a new genus and species of Cretaceous lizard, Paleochelco occultato gen. et sp. nov., based on a partial skull (MACN-Pv-N 120) discovered about three decades ago that was unnoticed in the Colección Paleovertebrados of the Museo Argentino de Ciencias Naturales ?Bernardino Rivadavia?. It comes from rocks of the Upper Cretaceous Bajo de la Carpa Formation (Neuquén Group) exposed at the Campus of the Universidad Nacional del Comahue, north of Neuquén City (Neuquén Province). The new taxon was included into a broad phylogenetic dataset of squamates and it was recovered around the base of Polyglyphanodontia in a constrained analysis using a total-evidence backbone. By contrast, the same, but topologically unconstrained analysis found Paleochelco occultato also around the base of Polyglyphanodontia but alternatively as the sister taxon to Polyglyphanodontia + Scleroglossa or as one of the sister taxa to the Mosasauria + Scleroglossa clade. The new finding, as well as other records from Argentina and Brazil, highlights a complex, still unrecovered, evolutionary history for lizards in the Mesozoic of South America.
Fil: Martinelli, Agustín Guillermo. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales "Bernardino Rivadavia"; Argentina
Fil: Agnolin, Federico. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales "Bernardino Rivadavia"; Argentina
Fil: Ezcurra, Martin Daniel. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales "Bernardino Rivadavia"; Argentina
description The record of Cretaceous terrestrial lizards (Squamata) in South America is patchy, with seven species described from north-eastern and south-eastern Brazil, and few isolated records of iguanians and scincomorphans from the Argentinian Patagonia. Herein we describe a new genus and species of Cretaceous lizard, Paleochelco occultato gen. et sp. nov., based on a partial skull (MACN-Pv-N 120) discovered about three decades ago that was unnoticed in the Colección Paleovertebrados of the Museo Argentino de Ciencias Naturales ?Bernardino Rivadavia?. It comes from rocks of the Upper Cretaceous Bajo de la Carpa Formation (Neuquén Group) exposed at the Campus of the Universidad Nacional del Comahue, north of Neuquén City (Neuquén Province). The new taxon was included into a broad phylogenetic dataset of squamates and it was recovered around the base of Polyglyphanodontia in a constrained analysis using a total-evidence backbone. By contrast, the same, but topologically unconstrained analysis found Paleochelco occultato also around the base of Polyglyphanodontia but alternatively as the sister taxon to Polyglyphanodontia + Scleroglossa or as one of the sister taxa to the Mosasauria + Scleroglossa clade. The new finding, as well as other records from Argentina and Brazil, highlights a complex, still unrecovered, evolutionary history for lizards in the Mesozoic of South America.
publishDate 2021
dc.date.none.fl_str_mv 2021-06
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/11336/167951
Martinelli, Agustín Guillermo; Agnolin, Federico; Ezcurra, Martin Daniel; Unexpected new lizard from the Late Cretaceous of southern South America sheds light on Gondwanan squamate diversity; Museo Argentino de Ciencias Naturales "Bernardino Rivadavia"; Revista del Museo Argentino de Ciencias Naturales n. s.; 23; 1; 6-2021; 57-80
1514-5158
1853-0400
CONICET Digital
CONICET
url http://hdl.handle.net/11336/167951
identifier_str_mv Martinelli, Agustín Guillermo; Agnolin, Federico; Ezcurra, Martin Daniel; Unexpected new lizard from the Late Cretaceous of southern South America sheds light on Gondwanan squamate diversity; Museo Argentino de Ciencias Naturales "Bernardino Rivadavia"; Revista del Museo Argentino de Ciencias Naturales n. s.; 23; 1; 6-2021; 57-80
1514-5158
1853-0400
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.22179/REVMACN.23.716
info:eu-repo/semantics/altIdentifier/url/http://revista.macn.gob.ar/ojs/index.php/RevMus/article/view/716
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Museo Argentino de Ciencias Naturales "Bernardino Rivadavia"
publisher.none.fl_str_mv Museo Argentino de Ciencias Naturales "Bernardino Rivadavia"
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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score 13.001348

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