What does a velociraptor diplodocus and megalosaurus classify as?

Velociraptor, Diplodocus, and Megalosaurus all belong to the order Saurischia. Saurischia is the lizard hipped dinosaur group, and it includes the four legged, long necked, giant suaropods like Diplodocus and the bipedal, predatory theropods like Velociraptor and Megalosaurus.