Megalosaurus lived 170 million years ago in Europe. Little is known about this dinosaur since no complete skeletons have been found. It's believed to have been a scavenger rather then a hunter.
Coelophysis was a meat eater with dagger like teeth. He stood about 6 feet tall and could run very fast.
T-Rex and Apatosaurus - apatosaurus was a huge plant eating dinosaur believed to have been 70 feet long. Fossils of the feet of this dinosaur showed they lived in herds.