El significado paleobiogeográfico de Quebrada Fiera (Mendoza) en el Oligoceno tardío sudamericano

ESPERANZA, CERDEÑO; BARBARA, VERA; A. M., COMBINA; FRANÇOIS, PUJOS

Sabadell

Congreso; XXVII Jornadas de la Sociedad Española de Paleontología; 2011

Sociedad Española de Paleontología

The late Oligocene fauna from Quebrada Fiera (Mendoza, Argentina) is providing new data on the distribution and evolution of South American Deseadan mammals. Descriptions of notoungulate Notohippidae and Archaeohyracidae have been recently published. Studies in progress on other native ungulates (Hegetotheriidae, Interatheriidae, Leontinidae, Homalodotheriidae, Toxodontidae, and Pyrotheriidae), metatheria, xenarthra, and rodents from Quebrada Fiera will increase the knowledge of this fauna. Preliminarily, the faunal association appears as a mix of taxa. On the one hand, with Patagonian affinities; on the other hand, related to species known from lower latitudes (Bolivia), together with exclusive taxa such as Mendozahippus (Notohippidae). The ongoing research will allow a better understanding of the role of Mendoza area in the paleobiogeographic and biostratigraphic context of the South American Oligocene mammals.