One of the largest sauropod dinosaurs found in China, its fossil was found at the crossing of MaMingXi in Yibin City. It is identified as sauropod subfamily. The total length of this genus is about 22 meters and the body height is nearly 7 meters. Its neck is very long, equivalent to half of its body length. It not only forms the length of each cervical vertebrae, but also has 19 cervical vertebrae, which is the most common species of sauropods. In addition, the neck is the longest of all dinosaurs (up to 12.1 meters). Compared with the cervical spine, the dorsal, sacral and caudal vertebrae are relatively less.