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Geobios
Volume 37, n° 4
pages 516-535 (juillet-août 2004)
Doi : 10.1016/j.geobios.2003.04.006
Received : 27 July 2002 ;  accepted : 8 April 2003
Macrauchenia patachonica Owen (Mammalia, Litopterna) de la région de São Raimundo Nonato (Piauí, Nordeste brésilien) et la diversité des Macraucheniidae pléistocènes
Macrauchenia patachonica Owen (Mammalia, Litopterna) from the São Raimundo Nonato Archaeological Area (Piauí, North Eastern Brazil) and the diversity of the Pleistocene MacraucheniidaeMacrauchenia patachonica Owen (Mammalia, Litopterna) da Área arqueológica de São Raimundo Nonato (Piauí, Nordeste do Brasil) e a diversidade das Macraucheniidae pleistocênicas
 

Claude Guérin a, , c , Martine Faure b, c
a UMR 5125 du CNRS « paléoenvironnements et paléobiosphère », UFR des sciences de la terre, université Claude-Bernard Lyon-I, 43, boulevard du 11-Novembre, 69622 Villeurbanne cedex, France 
b Université Lumière Lyon-2, 7, rue Raulin, 69007 Lyon, France 
c Fundação Museu do Homem Americano, Centro Cultural Sérgio Motta, São Raimundo Nonato, Piauí, Brésil 

*Auteur correspondant.
Résumé

La région de São Raimundo Nonato (Piauí, Nordeste Brésilien) a livré une cinquantaine de restes de Macraucheniidae. L'étude de ce matériel et d'autres fossiles provenant également du Nordeste brésilien (Paraíba, Pernambuco, Rio Grande do Norte) montre que cet animal est très semblable à Macrauchenia patachonica défini en Argentine. Le binôme Xenorhinotherium bahiense créé en 1988 par Cartelle et Lessa à partir de matériel du Bahia, et proposé pour désigner tous les Litopternes quaternaires du Brésil tropical, n'en est donc qu'un synonyme récent. M. patachonica , la mieux représentée des trois espèces du genre, semble avoir eu des biotopes très variés. Elle a peuplé la plus grande partie de l'Amérique du Sud du Pléistocène moyen jusqu'au début de l'Holocène.

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Abstract

The São Raimundo Nonato (Piauí, Northeastern Brazil) area yielded about 50 Macraucheniidae remains. The study of this material and of other fossils from Northeastern Brazil (Paraíba, Pernambuco, Rio Grande do Norte) shows a great similarity to Macrauchenia patachonica as it was defined in Argentina, which is the most abundant of the three species pertaining to the genus. Thus the taxon Xenorhinotherium bahiense created in 1988 by Cartelle et Lessa for a material discovered in the Bahia State and assigned to use for all the Quaternary Litopterns from tropical Brazil appears to be no more than a junior synonym of it. M. patachonica seems to have occupied very varied biotopes from sea level up to a high of 4000 m, and from the cold Southern Patagonia to the Equatorial Venezuela. The species lived from the Middle Pleistocene up to the beginning of the Holocene.

The full text of this article is available in PDF format.
Resumen

A Área de São Raimundo Nonato (Piauí, Nordeste do Brasil) forneceu cerca de ciqüenta vestígios de Macraucheniidae. O estudo deste material e de outros restos, igualmente provindos do Nordeste brasileiro (Paraíba, Pernambuco, Rio Grande do Norte) demonstra que este animal é muito semelhante à Macrauchenia patachonica definida na Argentina. O binômio Xenorhinotherium bahiense criado em 1988 por Cartelle et Lessa, a partir do material da Bahia, e proposto para designar todos os Litopternes quaternários do Brasil tropical, é portanto um sinônimo recente. M. patachonica parece ter tido biótopos muito variados. Ele povoou a maior parte da América do Sul do Pleistoceno médio até o início do Holoceno.

The full text of this article is available in PDF format.

Mots-clé : Mammalia, Litopterna, Macraucheniidae, Pléistocène, Brésil, Taxonomie

Keywords : Mammalia, Litopterna, Macraucheniidae, Pleistocene, Brazil, Taxonomy

Palabras Clave : Mammalia, Litopterna, Macraucheniidae, Pleistoceno, Brasil, Taxonomia




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