Fig. 6From: Evolutionary Transitions Among Dinosaurs: Examples from the Jurassic of ChinaPachycephalosaurs. a Skull of the domed pachycephalosaur Prenocephale prenes; b skull of the domed pachycephalosaur Stegoceras validum; c skull of the domeless pachycephalosaur Homalocephale calathocercos from the left side (left) and above (right)Back to article page