Introduction to prehistoric animal skeletons: During the Mesozoic Era from 225 million to 65 million years ago, Inner Mongolia was once a paradise for reptiles to thrive, and it was also home to the famous dinosaur fossils today. production area. In the "Ancient World" exhibition hall, there are fossil skeletons of duck-billed dinosaurs, Protoceratops, Psittacosaurus and other animals with different shapes on display, allowing visitors to travel in the kingdom of ancient creatures more intuitively.