%0 artículo original %A Laurito Mora, César %D 2011 %G spa %T ROEDORES FÓSILES DEL PLEISTOCENO SUPERIOR DE LA LOCALIDAD LA PALMERA DE SAN CARLOS, PROVINCIA DE ALAJUELA, COSTA RICA %U https://revistas.ucr.ac.cr/index.php/geologica/article/view/7774 %X A rodent fossil fauna from La Palmera locality at San Carlos area is described. Four new species Tylomys watsoni, Reithrodontomys mexicanus, Sigmodon hispidus and Proechimys semispinosus are reported. Aprobably Upper Pleistocene age is assigned to this assemblage, because of the paleoflora associated with therodents, which suggests a more temperate weather, probably a glacial age.