Kronosaurus was a massive marine reptile that lived during the Early Cretaceous period, around 125 to 100 million years ago. Measuring up to 10 meters (33 feet) in length, it was one of the largest pliosaurs. Kronosaurus had a robust, streamlined body with powerful flippers, making it an efficient swimmer. Its large, elongated head was equipped with strong jaws and sharp, conical teeth, adapted for catching and consuming large prey, including fish, other marine reptiles, and possibly cephalopods. Fossils of Kronosaurus have been found in Australia and Colombia, providing valuable insights into the diversity and adaptations of marine predators in the Cretaceous seas.