Where are the giant sauropods? The brachiosaurs, ultrasaurs, and diplodocus?
The tyrannosaur is currently being theorized to be a scavenger by paleontologists like Dr. Jack Horner of the Museum of the Rockies. He theorizes that the eyes are too small (to see prey), the arms are too small (to grab the prey), the olfactory (smell) sections of the skull are too large (it operates on smell), and the legs are built for walking - not running (the calf-bones are the same length as the thigh-bone). The tyrannosaurs are not fighters, they're giant vultures.
The velociraptors are a group (which disqualifies them instantly). They are also about three and a half feet tall (6 feet from snout to tail-tip). They don't deserve to be on this list, they're only here for the ignoramuses who've only heard of them from Jurassic Park.
Pterodactylus isn't a species, it's an entire genus. Certain large species of pterodactyl have wingspans of 1.5 meters; ooooh... scary pelican!
Allosaurs have the best of all traits: decent size (30+ feet in length), good bone structure, long arms, sharp teeth.