What is this?
Dinosaur-like Has teeth Has a tail Lived in the Jurassic Period
Bird-like Feathers (and flight?) Hollowed bones Large brain
What makes and animal a dinosaur? underslung legs that gave dinosaurs an erect posture a large hole in the bottom of their basin-shaped hip-socket a secondary palate (uncharacteristic of reptiles) that permits dinosaurs to eat and breathe at the same time a fairly straight thigh bone with an in-turned head two pairs of holes in the temporal region of the skull (diapsid skull)
Continued… backward-pointing knees (or elbows) of the front legs forward-pointing knees of the rear legs (rather than pointing sideways) front legs shorter and lighter than the rear legs (in almost every case) a special bone (predentary) at the chin that capped the front of the bottom jaw in some dinosaurs (the ornithischians) land-dwelling creature, rather than marine or airborne
Ancient Reptiles Pterosaurs (Flying reptiles) Mosasaurs (Marine reptiles)