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Estudios Geologicos
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Paleoecología y evolución de la fauna de mamíferos de América del Sur durante la «edad de las planicies australes» (Mioceno superior-Plioceno superior)

Authors: Ortiz Jaureguizar, Edgardo;

Paleoecología y evolución de la fauna de mamíferos de América del Sur durante la «edad de las planicies australes» (Mioceno superior-Plioceno superior)

Abstract

En este trabajo se estudian la paleoecología y la evolución de la fauna de mamíferos de América del Sur durante la denominada «edad de las planicies australes», un período que abarca las «Edades-mamífero» Chasiquense, Huayqueriense, Montehermosense y Chapadmalalense. Para ello se consideran los cambios en la riqueza taxonómica, en las tasas de primera y última aparición y en los tipos tráficos, tomando como modelo el registro de la Región Pampeana de la República Argentina. Durante la «edad de las planicies australes» se observa un paulatino incremento en la riqueza taxonómica, con un predominio de los Caviomorpha y los Cingulata. Las tasas de primera aparición son más altas que las de última aparición con la excepción de la «Edad-mamífero» Chapadmalalense, en la cual ambas tasas alcanzan un equilibrio. Desde un punto de vista trófico, predominan los mamíferos pastadores. Esta última característica corrobora la similitud existente entre la fauna de la «edad de las planicies australes» y la Cronofauna Clarendoniana de América del Norte.

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Spain
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Keywords

américa del norte, América del Norte, evolución, plioceno, Pliocene, Evolution, América del Sur, Plioceno, Edad de las Planicies Australes, Cronofauna Clarendoniana, Age of the Southern Plains, Clarendonian Chronofauna, mioceno, cronofauna clarendoniana, Mammals, QE1-996.5, Mamíferos, Mioceno, Geology, Miocene, South America, Evolución, paleoecología, mamíferos, Paleoecología, américa del sur, North America, Paleoecology, edad de las planicies australes

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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!
views
OpenAIRE UsageCountsViews provided by UsageCounts
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24
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