The black dragon king only exists in myth, not in reality. There is only a similar black dragon.

Moxianglong, the largest top predator in Mesozoic ocean. The adult body length of Hoffman Dragon can reach 15m, which is recognized as the largest individual, and the body length can reach 17m (individual CCMGE12469, jaw length 1.7 1m), which varies greatly according to the reconstructed weight.

The two mainstream versions are: "lizard type" is about 13- 16 tons, which is similar to Komodo monitor lizard and is also widely used data in China. The robust version is about 17-24 tons, which is the weight calculated according to the newer recycling. Although the history of black dragon is very short (it evolved from the cliff lizard on land, only appeared in the middle and late Cretaceous period and multiplied rapidly, and then died out with dinosaurs), it braved the wind and waves all the way, largely because of the niche vacancy caused by the extinction of Shanglong and ichthyosaurs.