65 million years ago, two groups of reptiles, dinosaurs and pterosaurs were believed to have been extinct. However, many reports of dinosaur like creatures, Mokele Mbembe, and giant bat like creatures led cryptozoologists to think dinosaurs and pterosaurs may still be alive.
- Main article: Pterosaurs and Pterodactyls in Cryptozoology
Dinosaurs were prehistoric reptiles that evolved during the Triassic and were believed to have become extinct during the Late Cretaceous. There were two main groups of dinosaurs: Saurichian, or lizard hipped, which included the Tryannosaurs, raptors, other theropods, and birds; while the other group, Ornithischain, the largest group of dinosaurs, included the long-necked sauropods, horned ceratopsians, ankylosaurs, and hadrosaurs or duck-billed dinosaurs. Dinosaurs were believed to be driven to extinction during the Late Cretaceous, due to either climate change, changing ecosystems (evolution of grass), volcanic activity, or meteor impact. The extinction may have lasted for hundreds of years. The last dinosaurs to have been killed due to this extinction (based on fossil evidence) were the hadrosaurs, or duck-billed dinosaurs. However, cryptozoologists have been reporting that other dinosaurs may have survived, like large tyrannosaurs, or even sauropods (Mokele Mbembe) which were mostly killed off (in exception to titanosaurs) during the Late Jurassic. Still, the possibility of dinosaurs still living continues, especially in areas where the ecosystem hasn't changed much over the past 65 million years. The remote and dense jungles of the Congo, the world's most unexplored rainforest, are ideal for a living dinosaurs, because its climate is hot and humid and it is lush in vegetation due to its small population of people. Still, pterosaurs had a higher chance of surviving the extinction because of their temperature regulation abilities. Still, predatory birds would have easily picked off the vulnerable pterosaurs, driving them to extinction.