During the Mesozoic of 250 to 65 million years ago, it was warm and humid, with plentiful precipitation rain fall and lush vegetation, the dinosaurs acquired unprecedented development, and so the Mesozoic was also named “the age of dinosaurs”. However, there were still some other reptiles dominated the ocean and sky, such as fishes, amphibians, early birds, mammals and lots of invertebrates multiplied and lived in their respective ecological fields. The diversity of living things maintained the ecological balance of the Mesozoic, and dinosaurs had dominated the earth for more than 100 million years through depending on other living things.
Here displayed terrestrial amphibians, turtles, mammal-like reptiles and primitive mammals living on the land; fishes, aquatic reptiles (as ichthyosaurs, nothosaurs, plesiosaurs) living in the water; pterosaurs, primitive birds flying in the sky; as well as tall arbors and short pteridophytes of the age of dinosaurs. All of them made the dinosaur world bright-colored and full of vigor.