Nuevo registro de Equus (Amerhippus) santaeelenae (Mammalia, Perissodactyla) del pozo de asfalto de Inciarte (Pleistoceno Superior), estado Zulia, Venezuela
Abstract
Resumen. Los fósiles de Equidae del pozo de asfalto de Inciarte son descritos y determinados taxonómicamente. Se han comparado los p3-4 inferiores de Inciarte con los de Equus (Amerhippus) andium, Equus (A.) santaeelenae, Equus (A.) insulatus y Equus (A.) neogeus de varias localidades de América del Sur mediante análisis multivariante. Los resultados de este análisis indican que la especie Equus (Amerhippus) santaeelenae (Spillmann) está representada en el yacimiento. Se discuten sus implicaciones paleoecológicas. Algunos autores sugieren que un estrés nutricional, producto de un cambio rápido en las comunidades vegetales, podría ser una de las causas que expliquen la extinción de fines del Pleistoceno. La especialización en la dieta que se atribuye a esta especie es una evidencia en favor de esta teoría. Abstract. NEW RECORDOF EQUUS (AMERHIPPUS) SANTAEELENAE (MAMMALIA, PERISSODACTYLA) FROM THE POZO DE ASFALTO DE INCIARTESITE (LATE PLEISTOCENE), ZULIA STATE, VENEZUELA.Fossil remains of Equidae from the asphaltic well of Inciarte quarry are described and taxonomically determined. We compared the lower p3-4 from Inciarte with Equus (Amerhippus) andium, Equus (A.) santaeelenae, E. (A.) insulatus and Equus (A.) neogeus remains from several localities in South America using multivariate analysis. The results of this analysis indicate that Equus (Amerhippus) santaeelenae (Spillmann) is represented in the quarry. Its paleoecological implications are discussed. The resource partitioning preference of this species supports the several nutritional hypotheses to explain latest Pleistocene extinctions.Downloads
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