New records of Cretaceous snakes in Argentina (Allen Formation, Río Negro Province)

Autores
Albino, Adriana María
Año de publicación
2010
Idioma
inglés
Tipo de recurso
documento de conferencia
Estado
versión publicada
Descripción
Some of the most relevant fossil snakes that inform about the evolution and early diversity of the group, come from Cretaceous sediments of Argentina. Among them, the remains assigned to the extinct family Madtsoiidae have been found in Upper Cretaceous localities of northern Patagonia and consist in isolated and fragmentary vertebrae. In this contribution, new remains from the upper Campanian-lower Maastrichtian of the Allen Formation (Malargüe Group) are preliminarly described. They were collected in diverse localities of the centre Río Negro Province. Fragmentary vertebrae assignable to known genera (e.g., Alamitophis Albino), as well as others that probably belong to new taxa, have been found. Although craniomandibular elements are not frequent in Cretaceous deposits, a robust and relatively large left maxilla of a probable madtsoiid has also been recognized. These findings document the abundance and diversity of madtsoiids in the Upper Cretaceous of Patagonia and reinforce the similarities reported among Allen, Los Alamitos and La Colonia Formations
Sesiones libres
Facultad de Ciencias Naturales y Museo
Materia
Ciencias Naturales
Paleontología
New records
Cretaceous snakes
Allen Formation, Río Negro Province
Nivel de accesibilidad
acceso abierto
Condiciones de uso
http://creativecommons.org/licenses/by-nc-sa/4.0/
Repositorio
SEDICI (UNLP)
Institución
Universidad Nacional de La Plata
OAI Identificador
oai:sedici.unlp.edu.ar:10915/16803
Acceder
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network_name_str SEDICI (UNLP)
spelling New records of Cretaceous snakes in Argentina (Allen Formation, Río Negro Province)Albino, Adriana MaríaCiencias NaturalesPaleontologíaNew recordsCretaceous snakesAllen Formation, Río Negro ProvinceSome of the most relevant fossil snakes that inform about the evolution and early diversity of the group, come from Cretaceous sediments of Argentina. Among them, the remains assigned to the extinct family Madtsoiidae have been found in Upper Cretaceous localities of northern Patagonia and consist in isolated and fragmentary vertebrae. In this contribution, new remains from the upper Campanian-lower Maastrichtian of the Allen Formation (Malargüe Group) are preliminarly described. They were collected in diverse localities of the centre Río Negro Province. Fragmentary vertebrae assignable to known genera (e.g., Alamitophis Albino), as well as others that probably belong to new taxa, have been found. Although craniomandibular elements are not frequent in Cretaceous deposits, a robust and relatively large left maxilla of a probable madtsoiid has also been recognized. These findings document the abundance and diversity of madtsoiids in the Upper Cretaceous of Patagonia and reinforce the similarities reported among Allen, Los Alamitos and La Colonia FormationsSesiones libresFacultad de Ciencias Naturales y Museo2010info:eu-repo/semantics/conferenceObjectinfo:eu-repo/semantics/publishedVersionResumenhttp://purl.org/coar/resource_type/c_5794info:ar-repo/semantics/documentoDeConferenciaapplication/pdfhttp://sedici.unlp.edu.ar/handle/10915/16803enginfo:eu-repo/semantics/altIdentifier/isbn/978-987-95849-7-2info:eu-repo/semantics/reference/hdl/10915/25738info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-sa/4.0/Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-09-29T10:53:02Zoai:sedici.unlp.edu.ar:10915/16803Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-09-29 10:53:03.121SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv New records of Cretaceous snakes in Argentina (Allen Formation, Río Negro Province)
title New records of Cretaceous snakes in Argentina (Allen Formation, Río Negro Province)
spellingShingle New records of Cretaceous snakes in Argentina (Allen Formation, Río Negro Province)
Albino, Adriana María
Ciencias Naturales
Paleontología
New records
Cretaceous snakes
Allen Formation, Río Negro Province
title_short New records of Cretaceous snakes in Argentina (Allen Formation, Río Negro Province)
title_full New records of Cretaceous snakes in Argentina (Allen Formation, Río Negro Province)
title_fullStr New records of Cretaceous snakes in Argentina (Allen Formation, Río Negro Province)
title_full_unstemmed New records of Cretaceous snakes in Argentina (Allen Formation, Río Negro Province)
title_sort New records of Cretaceous snakes in Argentina (Allen Formation, Río Negro Province)
dc.creator.none.fl_str_mv Albino, Adriana María
author Albino, Adriana María
author_facet Albino, Adriana María
author_role author
dc.subject.none.fl_str_mv Ciencias Naturales
Paleontología
New records
Cretaceous snakes
Allen Formation, Río Negro Province
topic Ciencias Naturales
Paleontología
New records
Cretaceous snakes
Allen Formation, Río Negro Province
dc.description.none.fl_txt_mv Some of the most relevant fossil snakes that inform about the evolution and early diversity of the group, come from Cretaceous sediments of Argentina. Among them, the remains assigned to the extinct family Madtsoiidae have been found in Upper Cretaceous localities of northern Patagonia and consist in isolated and fragmentary vertebrae. In this contribution, new remains from the upper Campanian-lower Maastrichtian of the Allen Formation (Malargüe Group) are preliminarly described. They were collected in diverse localities of the centre Río Negro Province. Fragmentary vertebrae assignable to known genera (e.g., Alamitophis Albino), as well as others that probably belong to new taxa, have been found. Although craniomandibular elements are not frequent in Cretaceous deposits, a robust and relatively large left maxilla of a probable madtsoiid has also been recognized. These findings document the abundance and diversity of madtsoiids in the Upper Cretaceous of Patagonia and reinforce the similarities reported among Allen, Los Alamitos and La Colonia Formations
Sesiones libres
Facultad de Ciencias Naturales y Museo
description Some of the most relevant fossil snakes that inform about the evolution and early diversity of the group, come from Cretaceous sediments of Argentina. Among them, the remains assigned to the extinct family Madtsoiidae have been found in Upper Cretaceous localities of northern Patagonia and consist in isolated and fragmentary vertebrae. In this contribution, new remains from the upper Campanian-lower Maastrichtian of the Allen Formation (Malargüe Group) are preliminarly described. They were collected in diverse localities of the centre Río Negro Province. Fragmentary vertebrae assignable to known genera (e.g., Alamitophis Albino), as well as others that probably belong to new taxa, have been found. Although craniomandibular elements are not frequent in Cretaceous deposits, a robust and relatively large left maxilla of a probable madtsoiid has also been recognized. These findings document the abundance and diversity of madtsoiids in the Upper Cretaceous of Patagonia and reinforce the similarities reported among Allen, Los Alamitos and La Colonia Formations
publishDate 2010
dc.date.none.fl_str_mv 2010
dc.type.none.fl_str_mv info:eu-repo/semantics/conferenceObject
info:eu-repo/semantics/publishedVersion
Resumen
http://purl.org/coar/resource_type/c_5794
info:ar-repo/semantics/documentoDeConferencia
format conferenceObject
status_str publishedVersion
dc.identifier.none.fl_str_mv http://sedici.unlp.edu.ar/handle/10915/16803
url http://sedici.unlp.edu.ar/handle/10915/16803
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/isbn/978-987-95849-7-2
info:eu-repo/semantics/reference/hdl/10915/25738
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv reponame:SEDICI (UNLP)
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repository.mail.fl_str_mv alira@sedici.unlp.edu.ar
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