Purussaurus was a giant prehistoric caiman that lived during the Miocene epoch, around 8 million years ago, in the tropical wetlands of South America. It was one of the largest known crocodilians, reaching lengths of up to 12 meters (39 feet) and weighing an estimated 8 tons. With its massive, powerful jaws and conical teeth, Purussaurus was a formidable predator, likely preying on large mammals, fish, and other reptiles in its riverine habitat. Fossils of Purussaurus have been found in regions of modern-day Brazil, Peru, and Colombia, shedding light on the diverse megafauna of ancient South America.