Phytodinosauria is a group of dinosaurs proposed in 1986, combining the Sauropodomorpha and Ornithischia as sister groups, conceptualized as a superorder of herbivorous dinosaurs excluding the carnivorous Theropoda. This hypothesis has been weakly or not replicated in most subsequent research, in which studies either combine Theropoda and Sauropodomorpha within Saurischia or Theropoda and Ornithischia within Ornithoscelida.
