Thylacosmilus is an extinct marsupial mammal that lived in prehistoric South America. It was a large terrestrial carnivore that once lived and competed with the saber toothed tiger. But the saber toothed tiger is actually a marsupial mammal, not belonging to the feline family, and even not to the carnivorous order. It only resembles the saber toothed tiger in appearance due to convergent evolution. Living in the Quaternary period of the Tertiary period. The body size is not very large, the largest of which is equivalent to the size of a jaguar and four times that of a pack wolf. He was one of the larger meat beasts in the southern cuisine at that time, with developed sword teeth and a strong body.