Human high technology makes you never imagine. In 1841, British scientist Richard Owen, when studying lizard ossification stones, thought that they were left by some prehistoric animals and named them dinosaurs, which means "horrible lizards". Thus, for the first time, we know that as early as 230 million years ago, there was an animal with a huge body, strong limbs and long tail on the earth. Its name is dinosaur. Unfortunately, in the natural survival law of human survival, this behemoth suddenly disappeared at the end of Cretaceous 65 million years ago, which has become a m......