Tsingtao spinosaurus is the most famous crested hadrosaur found in China and the first complete dinosaur found in China. It was found in Xigou, Jingankou Village, Laiyang City, near Qingdao, with a prickly nose on its head, hence the name. The age of the strata where sauropod fossils are located in Qingdao is the Late Cretaceous. It is 6.62 meters long and 4.9 meters high, with a foot-shaped sciatic end, a raised upper part of the intestine, an obvious straight edge in the ventral middle part of the sacrum, and a grooved back. The top decoration is actually a strip-shaped spine, with the edge on the rather backward nasal bone, much like the horn of a unicorn, protruding straight forward from between the eyes. It is estimated that it weighed about 6-7 tons when it was alive, but its brain was very small.