Mamenchixiosaurus, one of the largest sauropod dinosaurs found in China, lived about 0.16 billion years ago in the Late Jurassic. It is famous for its long neck, which can reach 12.1 meters in length, accounting for almost half of its body length. The head is relatively small, the teeth are thin and stick-shaped, suitable for gnawing high plants. The limbs are strong and strong, the forelimbs are short, the hind limbs are long, and the tail is long and strong, which helps to maintain the balance of the body. Living mainly in plains with lush plants and abundant water, they spend most of their time in lakes and marshes, floating their bulky bodies with the help of water. Foods on young leaves of tall trees and low shrubs.

One of the largest sauropod dinosaurs ever discovered in China, Mamenchixiosaurus lived during the Late Jurassic period, about 0.155 billion to 0.16 billion years ago. It is found in Mamen Creek, Yibin, Sichuan, China. The most notable feature is the extremely long neck, accounting for half of the body length, with up to 19 cervical vertebrae, the longest neck of all dinosaurs. The head is small, the teeth are thin and stick-shaped, suitable for nibbling leaves. It mainly lives in plains with luxuriant plants and abundant water, and feeds on the twigs and leaves of tall trees and low shrubs. Most of the time spent in lakes, swamps, with the help of water floating bulky body. The tail is long and strong and can be used to support the body

Pristosaurus is a medium-sized, lightweight terrestrial bipedal animal. The anterior teeth of the upper jaw and the particularly long common rod facing towards the rear demonstrate its originality. Molar teeth have a cutting effect, arranged in a single row, and updated in groups of three. The foot has four toes, with each toe end in the shape of a pointed hoof. Distributed in Asia, Australia, Europe, and North America, it lived from the mid Jurassic to the late Cretaceous period.