First report of a South American short-faced bears' den (Arctotherium angustidens): palaeobiological and palaeoecological implications

@article{Soibelzon2009FirstRO,
  title={First report of a South American short-faced bears' den (Arctotherium angustidens): palaeobiological and palaeoecological implications},
  author={Leopoldo Soibelzon and Lucas H. Pomi and Eduardo P. Tonni and Sergio Rodr{\'i}guez and Alejandro Dondas},
  journal={Alcheringa: An Australasian Journal of Palaeontology},
  year={2009},
  volume={33},
  pages={211 - 222}
}
  • L. Soibelzon, L. Pomi, A. Dondas
  • Published 12 August 2009
  • Environmental Science, Geography
  • Alcheringa: An Australasian Journal of Palaeontology
Here we report the first example of associated short-faced bear fossils from South America. The specimens represent three individuals referable to the Ensenadan (early to middle Pleistocene) species Arctotherium angustidens (Ursidae, Tremarctinae), the giant South American short-faced bear. Although the fossil record of short-faced bears in South America is very rich, they have not previously been recorded in association. These three individuals were found in a cave during quarry exploitation… 
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The Largest Known Bear, Arctotherium angustidens, from the Early Pleistocene Pampean Region of Argentina: With a Discussion of Size and Diet Trends in Bears
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It is suggested that the larger size and more carnivorous nature of A. angustidens, compared to later members of the genus, may reflect the relative lack of other large carnivores and abundance of herbivores in South America just after the Great American Biotic Interchange.
South American giant short-faced bear (Arctotherium angustidens) diet: evidence from pathology, morphology, stable isotopes, and biomechanics.
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The diet of the South American giant short-faced bear is assessed from multiple proxies: morphology, biomechanics, dental pathology, stable isotopes and a previous study using geometric morphometric methodology, which favors the idea of animal matter consumption.
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First Description of the Auditory Region of a Tremarctinae (Ursidae, Mammalia) Bear: The Case of Arctotherium angustidens
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The first detailed morphological study of the auditory region of a tremarctine bear, the South American giant short-faced bear Arctotherium angustidens, confirmed the presence of a recesus epitympanicus and an anterior incomplete septum of uncertain homology and identified interspecific variation in the external auditory region among Tremarctinae and Ursidae.
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