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A vertebrate assemblage of Las Curtiembres Formation (Upper Cretaceous) of northwestern Argentina Una asociación de vertebrados de la Formación Las Curtiembres (Cretácico Superior) del Noroeste de la Argentina

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Author(s)
Agustín Scanferla
Federico Agnolin
Fernando E Novas
Marcelo de la Fuente
Eduardo Bellosi
Ana María Báez
Alberto Cione
Keywords
Vertebrados
Formación Las curtiembres
Cretácico Superior
Argentina
Vertebrates
Las curtiembres Formation
Upper cretaceous
Argentina
Science (General)
Q1-390
Science
Q
DOAJ:Science (General)
DOAJ:Science General
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URI
http://hdl.handle.net/20.500.12424/1512237
Online Access
https://doaj.org/article/85fa312bf2214dd9815a2b9c76193c70
Abstract
We describe an association of fossil vertebrates from the Morales Member of the Las Curtiembres Formation (Campanian) near Puente Morales, Salta Province, NW Argentina. The fossils include teleostean fishes, pipid frogs, pleurodiran turtles, mesoeucrocodylians, non-avian theropod dinosaurs, and enantiornithine birds. The vertebrate record is dominated by freshwater taxa. With the exception of pipid frogs, all taxa here described constitute new records for this sedimentary unit. Among them, the turtles are reported for the first time in the Cretaceous of northwestern Argentina (Salta Group). Additionally, the recently published small enantiornithine Intiornis inexpectatus enlarges the diversity of cretaceous birds from South America. Despite the fragmentary nature of the specimens, the information provided by this Late Cretaceous assemblage sheds new light on the composition of the continental vertebrate fauna in a paleontologically poorly known region of South America.<br>Aquí describimos una asociación de fósiles de vertebrados proveniente del Miembro Morales de la Formación Las Curtiembres (Campaniano) exhumada en la localidad de Puente Morales, provincia de Salta, Argentina. Esta asociación se encuentra conformada por peces teleósteos, anuros pipidos, tortugas pleurodiras, mesoeucrocodilidos, dinosaurios terópodos no avianos y aves Enantiornithes. Este registro de vertebrados se encuentra dominado por taxa de agua dulce. Con la excepción de los anuros pipidos, todos los demás taxa aquí descriptos constituyen nuevos registros para esta unidad sedimentaria. Entre ellos, el registro de tortugas resulta ser el primero para el Grupo Salta. Adicionalmente, el Enantiornithes Intiornis inexpectatus amplía la diversidad de aves cretácicas de América del Sur. Más allá de la naturaleza fragmentaria de algunos de los especímenes, la información proporcionada por esta asociación del Cretácico Superior aporta novedosa información acerca de la composición de la poco conocida fauna de vertebrados continentales de esta región de América del Sur.
Date
2011-12-01
Type
Article
Identifier
oai:doaj.org/article:85fa312bf2214dd9815a2b9c76193c70
1514-5158
1853-0400
https://doaj.org/article/85fa312bf2214dd9815a2b9c76193c70
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