1) Dinosaur 2) Saurischian dinosaur 1) Sauropod 2) Theropod 
any member of one of the two major lineages of dinosaurs, including birds and all dinosaurs more closely related to birds than to Triceratops. In ... [5 related articles]
[n] - herbivorous or carnivorous dinosaur having a three-pronged pelvis like that of a crocodile
Saurischian Order of dinosaurs, “lizard hipped”, characterized by the lizard-type hip; includes large bipedal carnivores and large quadripedal herbivores. This major groupng of dinosaurs consists of theoropods and sauropods.
saurischian dinosaur noun herbivorous or carnivorous dinosaur having a three-pronged pelvis like that of a crocodile