Mamenchisaurus hochuanensis Young et Zhao  合川馬門(mén)溪龍

Mamenchisaurus is China's largest Sauropod dinosaur unearthed in Mamenxi, Hechuan District of Chongqing, in 1957. The giant dinosaur is between 16 and 30 meters long, with its neck accounting for half of its full body length. This herbivore walked the Earth during the Late Jurassic Period, weighing in at about 20 to 30 tons. Mamenchisaurus, studied and named by Dr. C. C. Young, is the longest dinosaur ever discovered in Asia.