Pterosaurs are a collective term for reptiles in the order Pterosauriformes, which are closely related to dinosaurs and crocodiles. Their name means winged lizards. Pterosaurs are extinct reptiles and vertebrates capable of flight. Pterosaur fossils have been found in Xinjiang, Inner Mongolia, Liaoning, Hebei, Gansu, Sichuan, Shandong, Zhejiang and other places in China, while pterosaur fossils have been found on various continents worldwide, including Antarctica. The pterosaurs lived from the late Triassic to the late Cretaceous, almost spanning the entire Mesozoic era.

The true lizard crocodile existed as an animal in the early Jurassic period. Living in the sea. It has an extremely narrow and long mouth lined with many sharp teeth. The body length is about 3 meters. It closes its mouth, and these teeth interlock thousands of times, forming an ideal clamp that can catch smooth fish or squid. It may swim by twisting its slender body and tail, with its short forelimbs tightly attached to its body while swimming.

Triceratops is a herbivorous dinosaur belonging to the family Triceratops in the order Ornithischia. Ceratopsians are mostly distributed in North America and lived in the late Cretaceous period, approximately 68 to 65 million years ago. Triceratops is a herbivorous dinosaur that mainly feeds on plant branches, leaves, fruits, etc. Paleontologists have discovered a large number of Triceratops fossils, and 'Big John' is one of the most famous among them. Through the study of this ancient dinosaur fossil, scientists have uncovered a glimpse into the prehistoric world. Due to its unique appearance, this image often appears in movies, computer games, and television programs, such as Jurassic Park and Son of King Kong

It is a large marine reptile similar to fish and dolphins. They lived during most of the Mesozoic era and first appeared about 250 million years ago, slightly earlier than dinosaurs (230 million years ago). They disappeared about 90 million years ago, about 25 million years before the extinction of dinosaurs. In the mid Triassic period, terrestrial reptiles that have not yet been determined gradually returned to the ocean and evolved into ichthyosaurs, similar to the evolution of dolphins and whales today. They were particularly widely distributed during the Jurassic period. During the Cretaceous period, they were replaced by plesiosaurs as the tallest aquatic carnivores.