The stegosaur is an animal belonging to the family Stegosauridae in the suborder Stegosauria of the order Ornithischia, also known as the Bone Plate Dragon. The head is small, and the tip of the mouth has a bird like pointed beak without teeth. The teeth are distributed on both sides of the mouth and are very small. Strong and robust in appearance, weighing up to 4 tons, with 5 toes on the front legs and 3 toes on the back legs; The front legs of the stegosaur are slightly shorter, while the hind legs are longer and more robust. Jianlong is named after its large sword board and sharp tail spikes on its tail. Living in the late Jurassic to early Cretaceous period. The diet is herbivorous. Due to their small teeth, they cannot grind plants and can only eat some low moss or fern plants.