Fossils of Pleistocene mammals are well-represented in all Northeastern Brazil. In Bahia State these are found in caves and tanks fossiliferous outcrops. This paper focuses on the study of fossil mammals from the tank known as “Sitio Novo”, in the municipality of Matina, Bahia. The research identified seven taxa: Megatheriidae (Megatheriinae, Eremotherium laurillardi), Mylodontidae, Glyptodontidae, Macraucheniidae (Macraucheninae, Xenorhinotherium bahiense), Toxodontidae, Gomphotheriidae (Notiomastodon platensis) e Camelidae. This locality has one of the most diverse records of extinct mammalian fauna until now among the tanks found in Bahia. Based on the studied assemblage and dates of the same taxa from this and others assemblages, we suggest that the local fauna lived during the late Pleistocene.