1. What is this?

2. Dinosaur-like
Has teeth
Has a tail
Lived in the Jurassic Period

3. Bird-like
Feathers (and flight?)
Hollowed bones
Large brain

4. 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)

5. 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

6. Ancient Reptiles Pterosaurs (Flying reptiles)
Mosasaurs (Marine reptiles)