SISTEMÁTICA DE LOS GRANDES CÁNIDOS (MAMMALIA, CARNIVORA, CANIDAE) FÓSILES DE AMÉRICA DEL SUR

During the Pleistocene, South America had several genera and species of large hypercarnivorous canids, which became completely extinct at end this epoch. This paper presents a comprehensive systematic review group (four genera, seven species) based on new cladistic analyses that include genomic information study intraspecific variation in canids. The results generated are discussed context knowledge phylogeny, systematics, biostratigraphy, paleoecology, biogeography American Protocyon orcesi was synonymized with troglodytes, Canis nehringi Aenocyon dirus. genus Theriodictis would be paraphyletic, so T. tarijensis transferred to Protocyon. “Canis” gezi does not belong Canis. distribution A. dirus P. troglodytes reach Pampean Region latter as far Mexico. On other hand, restricted Region. fragmentary nature taxa from North complicates their phylogenetic location biogeographical evolutionary interpretations. However, immigration events Central America, some later ones opposite direction, can inferred, diversification America. New specimens good preservation needed evaluate presence Chrysocyon outside assignment canids Orocual sites (Venezuela). available evidence allow us corroborate prior Ensenadense (>1.8 Ma).