Stegosaurus is an animal of the genus Stegosaurus, also known as bone plate dragon. The head is small, and the front end of the mouth has a bird-like pointed beak. There are no teeth on the beak. The teeth are distributed on both sides of the mouth and are very small. The shape is strong, weighing up to 4 tons, with 5 toes on the forelegs and 3 toes on the hind legs. The front legs of the stegosaurus are slightly shorter, and the hind legs are longer and stronger. Stegosaurus is named for its large saber and pointed thorn on its tail.

Swordtail, also known as Cocktail, is a genus of herbivorous dinosaur, living in North America in the Late Cretaceous, with a body length of about 2 meters. Its most prominent feature is the hemispherical thickening of the skull, composed of a number of small bones, covering the eyes and back of the neck, male skull thickness of up to 6cm. The genus was named by Lawrence Reibo in 1902. Swordhoratosaurus fossils are mainly distributed in Canada, using two-legged walking. There is controversy in the academic community about its thickening craniocerical function, which may be used for intrassic collisions or to ward off predators. Early studies have classified it as a close relative of the wounded tooth dragon. After the discovery of the skull in 1945, it was confirmed to belong to the thick head dragon.