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

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 i...

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Autor principal: Albino, Adriana María
Formato: Objeto de conferencia Resumen
Lenguaje:Inglés
Publicado: 2010
Materias:
Ciencias Naturales
Paleontología
New records
Cretaceous snakes
Allen Formation, Río Negro Province
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/16803
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-16803
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Ciencias Naturales
Paleontología
New records
Cretaceous snakes
Allen Formation, Río Negro Province
spellingShingle Ciencias Naturales
Paleontología
New records
Cretaceous snakes
Allen Formation, Río Negro Province
Albino, Adriana María
New records of Cretaceous snakes in Argentina (Allen Formation, Río Negro Province)
topic_facet Ciencias Naturales
Paleontología
New records
Cretaceous snakes
Allen Formation, Río Negro Province
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
format Objeto de conferencia
Resumen
author Albino, Adriana María
author_facet Albino, Adriana María
author_sort Albino, Adriana María
title New records of Cretaceous snakes in Argentina (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)
publishDate 2010
url http://sedici.unlp.edu.ar/handle/10915/16803
work_keys_str_mv AT albinoadrianamaria newrecordsofcretaceoussnakesinargentinaallenformationrionegroprovince
bdutipo_str Repositorios
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