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Doctoral thesis . 2019 . Peer-reviewed
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Doctoral thesis
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Paleobiología de la asociación faunística de Caleufú (La Pampa, Formación Cerro Azul, Mioceno superior - Plioceno inferior), a través de análisis tafonómicos

Authors: Montalvo, Claudia Inés;

Paleobiología de la asociación faunística de Caleufú (La Pampa, Formación Cerro Azul, Mioceno superior - Plioceno inferior), a través de análisis tafonómicos

Abstract

Se realizaron estudios detallados de la asociación faunística proveniente de niveles de la Formación Cerro Azul (Mioceno superior – Plioceno inferior) aflorantes en Caleufú, al Norte de la provincia de La Pampa. Los mismos incluyen la descripción de los niveles portadores, la revisión sistemática de los taxa presentes y el análisis tafonómico de los restos recuperados y de la asociación en conjunto. Se planteó una investigación en la que la información tafonómica aporta datos significativos a la investigación taxonómica y estratigráfica. Los niveles de la Formación Cerro Azul en Caleufú son limolitas loessoides con evidencias de pedogénesis y diagénesis. La asociación faunística está constituida por reptiles de la Familia Teiidae y la Superfamilia Colubroidea, aves indeterminadas y mamíferos de los órdenes Xenarthra (Dasypodidae, Glyptodontidae y Mylodontidae), Didelphimorphia (Didelphidae, Sparassocynidae), Orden indet. (Argyrolagidae), Rodentia (Echimyidae, Octodontidae, Chinchillidae, Dinomyidae, Caviidae y Muridae Sigmodontinae), Notoungulata (Hegetotheriidae, Mesotheriidae), Litopterna (Proterotheriidae) y Carnivora. Se registraron 11 taxa de mamíferos atribuibles a la Edad mamífero Huayqueriense y 6 taxa indicadores de mayor modernidad, por lo que esta asociación puede ser ubicada en el Mioceno tardío – Plioceno temprano, cercana aunque algo más antigua que la Edad mamífero Montehermosense. Los especímenes recuperados fueron agrupados en dos categorías, de acuerdo con la presencia de ciertos atributos tafonómicos y a su masa corporal estimada: los microvertebrados (menos de 5 kg) y los mamíferos de mayor talla corporal (más de 5 kg).

Country
Argentina
Related Organizations
Keywords

Tafonomía, Fauna, Ciencias Naturales, La Pampa (Argentina), Paleobiología, Paleontología

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
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