Dinosaurs are a diverse group of animals of the clade and superorder Dinosauria. They were the dominant terrestrial vertebrates for over 160 million years.Ornthopoda��Stegosauria��Ankylosauria,Ceratopsia,Pachycephalosauria.Asiaceratops,Microceratops,Graciliceratops,Udanoceratops,Bainoceratops,Kulceratops,Ceratops,Chasmosaurus,Polyonax,Kulceratops,etc