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dc.date.accessioned 2012-03-12T15:23:21Z
dc.date.available 2012-03-12T03:00:00Z
dc.date.issued 2007 es
dc.identifier.uri http://sedici.unlp.edu.ar/handle/10915/5368
dc.description.abstract The first record of a Tremarctinae bear in Venezuela was made by Royo y GÓMEZin 1960. Since then, three new specimens from two localities have been collected but not reported. The purpose of this contribution is to discuss the taxonomy, biostratigraphy, and biogeographic implications of these records. The bear genera included in the subfamily Tremarctinae are distributed exclusively in America. In South America only one fossil genus is recorded, Arctotherium, comprising five species: A. angustidens, restricted to the Ensenadan (early - middle Pleistocene) of Argentina and Bolivia; A. vetustum, recorded only in the Bonaerian (middle Pleistocene) of Brazil and Argentina; two Bonaerian and Lujanian (middle Pleistocene - early Holocene) species, A. bonariense (recorded only in Argentina), andA. tarijense (occurring in Argentina, Bolivia, Uruguay and Chile); and A. wingei, recorded with certainty only in the Lujanian (late Pleistocene- early Holocene).After the present study we conclude that (1) A. wingei is the only species recorded in Venezuela, and (2) all known specimens have Lujanian pravenance. Outside Venezuela, this species is recorded from Bolivia and Brazil but without precise stratigraphic data. Although A. wingei is one of the most plesiomorphic Arctotherium species, it has not been recorded in sediments older than late Pleistocene. This could be interpreted as species preference for low latitude tropical or subtropical enviranments, which are poorly represented in early Pleistocene continental sediments. es
dc.format.extent 287-298 es
dc.language en es
dc.subject Ursidae es
dc.subject Venezuela es
dc.subject Tremarctinae; Arctotherium wingei;, Muaco; Guáchara Cave; Pleistocene es
dc.subject Fósiles es
dc.title The fossil record of the short-faced bears (Ursidae, Tremarctinae) from Venezuela. Systematic, biogeographic, and paleoecological implications es
dc.type Articulo es
sedici.creator.person Rincón, Ascanio D. es
sedici.creator.person Soibelzon, Leopoldo Héctor es
sedici.subject.materias Paleontología es
sedici.subject.materias Ciencias Naturales es
sedici.description.fulltext true es
mods.originInfo.place 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.rights.uri http://creativecommons.org/licenses/by-nc/3.0/
sedici.description.peerReview peer-review es
sedici2003.identifier ARG-UNLP-ART-0000007934 es
sedici.relation.journalTitle Neues Jahrbuch fur Geologie und Palaontologie-Abhandlungen es
sedici.relation.journalVolumeAndIssue vol. 244, no. 3 es

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Creative Commons Attribution-NonCommercial 3.0 Unported (CC BY-NC 3.0) Except where otherwise noted, this item's license is described as Creative Commons Attribution-NonCommercial 3.0 Unported (CC BY-NC 3.0)