Abstract
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.
Highlights
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
A Osborn, 1936) a nivel de especie, parecería indicar que los restos chilenos son más próximos a los restos de C. hyodon que con S. platensis, mientras el mismo análisis hecho con los m3, englobarían todos los restos de América del Sur incluidos en este estudio (Fig. 5)
Dispersal, and extinction of South American Pleistocene gomphotheres (Gomphotheriidae, Proboscidea)
Summary
Frassinetti & Alberdi (2000) indican que los fósiles de gonfoterio en Chile se registran desde el Pleistoceno superior al Holoceno temprano (Edad Mamífero Lujanense). También señalan que la distribución geográfica de los fósiles de gonfoterio se encuentran en los llanos centrales de Chile, cordillera de la costa y zonas costeras. Labarca & Alberdi (2011) destacan que los datos geológicos de los sitios con fósiles de gonfoterio han sido descritos en distintos hallazgos arqueológicos. Finalmente sella el sitio la capa PB-9, compuesta por una turba pura. Monte Verde II (41° 30' S; 73° 15' W) se encuentra en las terrazas de un pequeño arroyo en la cuenca del río Maullín, situada a medio camino entre la costa del Pacífico y la cordillera de los Andes.
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