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Review of the genus Hippidion Owen, 1869 (Mammalia: Perissodactyla) from the Pleistocene of South America
Authors:MARIA T ALBERDI FLS  JOSÉ L PRADO
Institution:Museo National de Ciencias Naturales, CSIC, JoséGutiérrez Abascal, 2, 28006 Madrid, Spain;Museo da La Plata, Paseo del Basque s/n, 1900-La Plata, Argentina
Abstract:This review of Hippidion is based on a multivariate analysis of the foot, and some morphological characteristics of the skull and dentition. We recognize only one genus ( Hippidion ) including all the hippidiform horses, with three different species: H. principale, H. devillei and H. saldiasi. The latter species is stratigraphically and geographically restricted to the period from 13000 to 8000 years BP in the southern part of South America. Hippidion principale and H. devillei have a large geographical distribution (Argentina, Bolivia, Chile, Perú, Uruguay, Brazil) through the Upper Pliocene-Upper Pleistocene. Both species show some morphometric variations across their geographic range; these features may result from the environmental characteristics.
Keywords:South America  Pliocene  Pleistocene  Hippidion  Taxonomy  Multivariate analysis
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