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dc.coverage.spatial Ensenada, Argentina es 2012-03-09T18:21:12Z 2012-03-09T03:00:00Z 2011 es
dc.description.abstract The South American giant short-faced bear (Arctotherium angustidens Gervais and Ameghino, 1880) is one of five described Arctotherium species endemic to South America and it is known for being the earliest, largest, and most carnivorous member of the genus. Here we report an extraordinarily large A. angustidens individual exhumed from Ensenadan sediments (early to middle Pleistocene) at Buenos Aires Province, Argentina. Based on overall size, degree of epiphyseal fusion, and pathologies, this bear was an old-aged male that sustained serious injuries during life. Body mass of the bear is estimated and compared to other ursid species based on a series of allometric equations. To our knowledge, this specimen now represents the largest bear ever recorded. In light of this discovery, we discuss the evolution of body size in Arctotherium (from large-to-small) and compare this to bears that exhibited different evolutionary trajectories. We suggest 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 es
dc.format.extent p. 69-75 es
dc.language en es
dc.title The largest known bear, Arctotherium angustidens, from the early Pleistocene pampeam region of Argentina: with a discussion of size and diet trends in bears es
dc.type Articulo es
sedici.creator.person Schubert, Blaine W. es
sedici.creator.person Soibelzon, Leopoldo Héctor es
sedici.subject.materias Paleontología es
sedici.subject.materias Ciencias Naturales es
sedici.subject.decs Tamaño Corporal es
sedici.subject.decs Carnívoros es
sedici.subject.eurovoc oso es
sedici.subject.keyword early Pleistocene es
sedici.subject.keyword Arctotherium angustidens es
sedici.description.fulltext true es Museo de La Plata es
sedici.subtype Articulo es
sedici.rights.license Creative Commons Attribution-NonCommercial 3.0 Unported (CC BY-NC 3.0)
sedici.description.peerReview peer-review es
sedici2003.identifier ARG-UNLP-ART-0000007923 es
sedici.relation.journalTitle Journal of Paleontology es
sedici.relation.journalVolumeAndIssue vol. 85, no. 1 es

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Creative Commons Attribution-NonCommercial 3.0 Unported (CC BY-NC 3.0) Excepto donde se diga explícitamente, este item se publica bajo la siguiente licencia Creative Commons Attribution-NonCommercial 3.0 Unported (CC BY-NC 3.0)