Publication: La Familia Gomphotheriidae en América del Sur: evidencia
de molares al norte de la Patagonia chilena
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2014
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Consejo Superior de Investigaciones Científicas, Museo Nacional de Ciencias Naturales
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Abstract
Damos a conocer los estudios estadísticos hechos con diez molares M3 y m3 del centro-sur de Chile, comparados con material de gonfoterios Stegomastodon platensis, Stegomastodon waringi y Cuvieronius hyodon de América del Sur. Además se analizan tres fragmentos de defensa provenientes de los sitios chilenos de Monte Verde, Mulpulmo y Nochaco. En el análisis estadístico es claro que los molares son muy variables en forma, así como en tamaño y presentan una gran dispersión, sin embargo en los diagramas bivariantes la mayoría de los molares de Chile se agrupan con los molares de talla grande (del género Stegomastodon). Los análisis discriminantes indican que de los siete m3, cinco se asocian a Stegomastodon platensis y dos a Cuvieronius hyodon. De los tres M3, dos se asocian con la especie Stegomastodon platensis y uno con Stegomastodon waringi. Se discute la probable simpatría de las especies S. platensis y C. hyodon en el sur de Chile.
We present statistical studies made with ten molars M3 and m3 of south-central Chile, we compared material of gomphotheres Stegomastodon platensis, Stegomastodon waringi and Cuvieronius hyodon of South America. Also we analyze three fragments defense of the Chilean sites of Monte Verde, Mulpulmo and Nochaco. In the statistical analysis it is clear that the molars are very variable in shape, also in size and have a great dispersion, however in bivariate diagrams the molars of Chile were grouped with the molars large (genus Stegomastodon). The discriminant analysis indicates that five m3 are associated with Stegomastodon platensis and two with Cuvieronius hyodon, two M3 are associated with Stegomastodon platensis and one with Stegomastodon waringi. We discuss the sympatric between species S. platensis and C. hyodon in southern Chile.
We present statistical studies made with ten molars M3 and m3 of south-central Chile, we compared material of gomphotheres Stegomastodon platensis, Stegomastodon waringi and Cuvieronius hyodon of South America. Also we analyze three fragments defense of the Chilean sites of Monte Verde, Mulpulmo and Nochaco. In the statistical analysis it is clear that the molars are very variable in shape, also in size and have a great dispersion, however in bivariate diagrams the molars of Chile were grouped with the molars large (genus Stegomastodon). The discriminant analysis indicates that five m3 are associated with Stegomastodon platensis and two with Cuvieronius hyodon, two M3 are associated with Stegomastodon platensis and one with Stegomastodon waringi. We discuss the sympatric between species S. platensis and C. hyodon in southern Chile.