Ranked by , not size, but deadliness
http://www.ranker.com/list/20-deadliest-dinosaurs/epicman,
Allosaurus
Allosaurus was a dangerous carnivore that succeeded using pack hunting, speed, raw force, and lethalness. It has a large fossil collection and is very well known.
Tarbosaurus
Tarbosaurus was a large tyrannosaur. It was basicly an Asian tyrannosaurus.
Carcharodontosaurus
Carcharodontosaurus was as big as trex and was almost as deadly. It hunted in pairs and took down many of the dinosaurs in north Africa, excluding Paralatitan.
Carnotaurus
When you hear "meat-eating bull" you think of something like a minotaur. Well, thats sort of what Carnotaurus was. A 25 foot minotaur.
Torvosaurus
Torvosaurus was the tiger of the Jurassic, at 39 feet, it could bite through any dinosaurs skin and use its claws to tear them apart.By far the scariest jurassic carnivore.
Spinosaurus
Spinosaurus was all around an amazing predator. It is tied with #1, but famous-ness finds it's way.
Tyrannosaurus
Bone crunching is a helpful skill for destruction. So is a big brain, which is Trex's possession. The king is here, bow down.
Ceratosaurus
This dinosaur, Ceratosaurus, was a very fast dinosaur. It could run 25 k/m an hour. It competed with larger carnivores but still survived.
Giganotosaurus
Giganotosaurus was a huge carnivore. It had giant bone crushing teeth in 5 foot long head!
Rajasaurus
Rajasaurus could crush bones in half with its powerful jaws, and was one of most dangerous animals ever to roam Earth.