Purussaurus brasiliensis was a colossal prehistoric caiman that lived during the Miocene epoch in South America. It was known for its enormous size, reaching up to 12.5 meters in length. This apex predator had a robust skull and powerful jaws, suitable for hunting large prey in swampy habitats.

Purussaurus brasiliensis was native to tropical regions of South America during the Miocene epoch. It primarily inhabited areas that are now part of modern-day Brazil, Peru, and Colombia.

Purussaurus brasiliensis lived in warm, humid environments typical of tropical climates. These regions were characterized by extensive river systems and floodplains, which provided abundant aquatic habitats.

As a large carnivorous reptile, Purussaurus brasiliensis occupied the ecological niche of an apex predator in its aquatic environment. It likely preyed on a variety of animals, including fish, turtles, and possibly other large vertebrates. The presence of lush vegetation and abundant waterways supported a diverse ecosystem in which Purussaurus thrived.