Eric Walker added Ornithischia and Saurischia and a number of links to Dinosauria, and added Dinosauria to Dracohors

Eric Walker added Buriolestes to Sauropodomorpha, and added Sauropodomorpha to Saurischia

Eric Walker added Tyrannosauridae, Aves and Abelisauridae and a number of links to Theropoda, and added Theropoda to Saurischia

Eric Walker added Theropoda and Sauropodomorpha to Saurischia, and added Saurischia to Dinosauria