Thylacosmilus

Thylacosmilus atrox is an extinct species of saber-toothed metatherian that inhabited South America from the late Miocene to late Pliocene epochs. Remains of this animal have been found primarily in the provinces of Catamarca, Entre Ríos, and La Pampa in northern Argentina.[2] ThoughThylacosmilus is one of several predatory mammal genera typically called "sabre-toothed cats", it was not a felid but a sparassodont, a group closely related to marsupials, and only superficially resembled other sabre-toothed mammals due to convergent evolution.