摘要

El presente trabajo discute el estatus taxon車mico de la especie Antifer niemeyeri Casamiquela, 1984, definida a partir de astas completas procedentes de la laguna Taguatagua y la quebrada de Quereo (Pleistoceno tard赤o-Holoceno temprano), en Chile central (30-35~S). Se concluye, a partir de un estudio morfol車gico y morfom谷trico detallado, que Antifer niemeyeri debe ser considerado sin車nimo de Antifer ultra Ameghino, 1889 dados los caracteres anat車micos compartidos con esta especie. Los resultados ampl赤an la distribuci車n geogr芍fica del tax車n, que previamente se registraba en Argentina, Uruguay y sur de Brasil, y confirman su biocr車n para el Pleistoceno tard赤o-Holoceno temprano (edad Lu-janense), aun cuando las fechas radiocarb車nicas de Chile central (ca. 9.900 a os 14C AP) corresponden a las m芍s tard赤as para la especie. A la luz de la evidencia paleoclim芍tica disponible, se vincula A ultra durante el Pleistoceno de Chile central a ambientes c芍lidos y abiertos. Considerando estos requerimientos, se discute su posible v赤a de ingreso al actual territorio chileno a trav谷s de corredores ubicados hacia el sur del macizo andino, y su coexistencia con Hippocamelus bisulcus Molina, 1782. De acuerdo a la informaci車n estratigr芍fica y paleoambiental, se postula que ambas especies habr赤an sido alop芍tridas, por lo menos en el 芍rea de estudio. This paper discusses the taxonomic status of Antifer niemeyeri Casamiquela, 1984, defined from complete antlers from Taguatagua lake and Quereo canyon, both located in central Chile (30-35~S). From a detailed morphological and moiphometrical study, it is concluded that Antifer niemeyeri should be considered synonymous with Antifer ultra Ameghino, 1889, due to the anatomical characters shared between both forms. These results expand the geographical distribution of this taxa previously recorded in Argentina, Uruguay and southern Brazil, confirming their late Pleistocene-early Holocene biochron, in spite the fact that radiocarbon dates obtained in central Chile (ca. 9.900 14C yr BP) imply the youngest age for the species. According to the available paleoclimate evidence, A. ultra is linked to warm climate and an open landscape during the late Pleistocene of central Chile. Its possible routes of entry to central Chile through corridors located at the south of the Andean range and its coexistence with Hippocamelus bisulcus Molina, 1782, are also discussed. According to the stratigraphic and paleoenvironmental data we suggest that both species have been allopatric, at least in the study area.

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