We report the first radiocarbon datings and carbon (δ13C) oxygen (δ18O) stable isotopes data to reconstruct paleoecology of medium large herbivorous mammals from late Quaternary southwestern Amazon (Acre Rondônia states, Brazil). AMS 14C dates for Neochoerus sp. (29,072 - 27,713 Cal yr BP), Notiomastodon platensis (25,454 24,884 BP) Eremotherium laurillardi (11,320 11,131 support Lujanian ages....

While the North American mylodont sloth, Parmylodon harlani, has been identified in multiple localities Mexico, most of these records are from southern part country. Consequently, there is a large geographic gap between its distribution Mexico and more northern species United States. The recovery remains individuals Paramylodon as late Pleistocene fauna San Clemente de Térapa, Sonora, partially...