Introduction to paleontological fossils in Gansu: The exhibition hall focuses on the evolution of life on earth and displays a large number of paleontological fossil specimens found in Gansu, including four sub-exhibition halls: the Earth Hall, the Marine Animal Hall, the Dinosaur Hall, and the Yellow River Ancient Elephant Hall. It introduces the evolution of the earth and life and various types of paleontological fossils discovered in the Paleozoic, Mesozoic and Cenozoic geological periods, as well as their living environment and related knowledge.