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First record of Chaetophractus villosus (Mammalia, Dasypodidae) in the late Pleistocene of Corrientes Province (Argentina)

Authors: Francia , A.; Ciancio, M. R.;

First record of Chaetophractus villosus (Mammalia, Dasypodidae) in the late Pleistocene of Corrientes Province (Argentina)

Abstract

Chaetophractus villosus se registra desde el Chapadmalalense (Plioceno medio) a la actualidad. Esta especie muestra una de las distribuciones más amplias entre los dasipódidos vivientes, pero sus rangos de distribución actuales y pasados no incluyen a las provincias de la Mesopotamia argentina (Entre Ríos, Corrientes y Misiones). En la presente contribución damos a conocer el primer registro de Chaetophractus villosus en el Cuaternario de la provincia de Corrientes. Estos depósitos cuaternarios están expuestos a lo largo de las orillas del río Paraná y están representados por dos formaciones sucesivas asignadas al Pleistoceno superior: la Formación Toropí y la Formación Yupoí. Durante el Pleistoceno el extremo sur de América del Sur ha experimentado fluctuaciones climáticas, con la alternancia de cortos períodos húmedos y cálidos y periodos áridos/semiáridos y fríos, lo que llevó a la retracción o expansión de las biotas de áreas vecinas. La presencia de Chaetophractus villosus en el Pleistoceno tardío de la Mesopotamia argentina proporciona una nueva evidencia de la existencia de periodos con condiciones climáticas más áridas y frías que en la actualidad.

Chaetophractus villosus is recorded from the Chapadmalalian (middle Pliocene) to present. This species shows one of the widest distributions of living dasypodids, but its current and past ranges do not include the provinces of the argentinean Mesopotamia (Entre Ríos, Corrientes and Misiones Provinces). We report the first record of Chaetophractus villosus in the Quaternary of Corrientes Province. These Quaternary deposits are exposed along the banks of the Paraná River and are represented by two successive upper Pleistocene formations: the Toropí Formation and Yupoí Formation. During the Pleistocene the southern end of South America has experienced climatic fluctuations, with alternations of short humid and warm periods and arid/semiarid and cold periods, leading to contraction or expansion of the biota from neighboring areas. The presence of Chaetophractus villosus in the late Pleistocene of argentinean Mesopotamia provides new evidence of periods with more arid and colder climatic conditions than the present.

Fil: Ciancio, Martin Ricardo. Universidad Nacional de la Plata. Facultad de Ciencias Naturales y Museo. División Paleontología Vertebrados; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina

Fil: Francia, Analia. Universidad Nacional de la Plata. Facultad de Ciencias Naturales y Museo. División Paleontología Vertebrados; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina

Country
Argentina
Keywords

Armadillos, 590, Xenarthra, GN1-890, Paleontología, paleoclimas, Quaternary, armadillos, Mesopotamian region, https://purl.org/becyt/ford/1.5, Anthropology, paleoclimates, Cuaternario, Paleoclimates, QH1-278.5, https://purl.org/becyt/ford/1, Natural history (General), región Mesopotámica

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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.
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