Introduction to Hezheng Sheep: Hezheng Sheep lived in the late Miocene. Although it is very close to living sheep in terms of individual size and body shape, its skull structure, horn shape and neck characteristics But the muskoxen, which only lives in Alaska in North America today, is closer and is the early ancestral type of muskoxen. It is one of the most representative animals of the three-toed horse fauna in the Hezheng area and is very abundant.