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Estudios Geologicos
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Micromamíferos del sitio Arroyo Seco 2 (provincia de Buenos Aires, Argentina). Sus implicaciones tafonómicas y paleoambientales

الثدييات الدقيقة من موقع أرويو سيكو 2 (مقاطعة بوينس آيرس، الأرجنتين). آثاره الحجرية والبيئية القديمة
Authors: Gustavo N. Gómez; José Luis Prado; Marı́a Teresa Alberdi;

Micromamíferos del sitio Arroyo Seco 2 (provincia de Buenos Aires, Argentina). Sus implicaciones tafonómicas y paleoambientales

Abstract

La secuencia del Pleistoceno tardío-Holoceno temprano en Arroyo Seco 2 es una de las más completas del registro de la Región Pampeana. Se distinguen cuatro unidades estratigráficas, tres de ellas contienen abundantes restos de pequeños mamíferos fósiles. Se analizan los huesos fósiles de estas unidades con el fin de determinar los procesos tafonómicos y el hábitat en el que tuvo lugar la acumulación que dio lugar al yacimiento. La mayor parte de los huesos fósiles están rotos con posterioridad al enterramiento. Los huesos procedentes de las unidades inferiores están recubiertos de manganeso (Mn) debido a la oscilación de los niveles del agua como consecuencia de reiterados encharcamientos. Entre la fauna de micromamíferos identificamos tres especies de armadillo (Chaetophractus villosus, Dasypus hybridus y Zaedyus pichiy) y cuatro de roedores (Akodon azarae, Rheitrodon auritus, Ctenomys talarum y Lagostomus maximus). Los datos sobre micromamíferos registrados, sumados a la evidencia de megafauna, indican una transición de condiciones templadas y semiáridas a más húmedas entre 12.000 y 8.500 años AP.

Country
Spain
Keywords

Tafonomía, xenarthra, Pleistoceno, Argentina, Social Sciences, Rodentia, pleistoceno, paleoambientes, rodentia, argentina, QE1-996.5, Paleoambientes, holoceno, Holocene, Human Evolution and Behavioral Modernity, Paleontology, Geology, Evolutionary Dynamics of Mammals and Their Ancestors, Paleoenvirnoment, Xenarthra, tafonomía, Paleoenvironment, FOS: Sociology, Pleistocene, Earth and Planetary Sciences, Taphonomy, Anthropology, Physical Sciences, Medicine, Holoceno, Paleobiology

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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!
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