bird-footed dinosaur - any of numerous carnivorous dinosaurs of the Triassic to Cretaceous with short forelimbs that walked or ran on strong hind legsceratosaur, ceratosaurus - primitive medium-sized theropod; swift-running bipedal carnivorous dinosaur having grasping hands with sharp claws and a short horn between the nostrils; Jurassic in North America carnosaur - large carnivorous bipedal dinosaur having huge claws tyrannosaur, tyrannosaurus, Tyrannosaurus rex - large carnivorous bipedal dinosaur having enormous teeth with knifelike serrations; may have been a scavenger rather than an active predator; later Cretaceous period in North America allosaur, allosaurus - late Jurassic carnivorous dinosaur; similar to but somewhat smaller than tyrannosaurus compsognathus - very small bipedal carnivorous dinosaur of the late Jurassic in Bavaria eoraptor - a theropod dinosaur of the genus Eoraptor megalosaur, megalosaurus - gigantic carnivorous bipedal dinosaur of the Jurassic or early Cretaceous in Europe ornithomimid - lightly built medium-sized dinosaur having extremely long limbs and necks with small heads and big brains and large eyes |