What was the largest dinosaur meat eater?

The largest carnivore found so far is a mystery. Although Tyrannosaurus is the smartest, strongest and quickest of all large carnivorous dinosaurs, it wasn't the largest. Some dinosaur experts say Giganotosaurus is the biggest of all flesh-eating dinosaurs. Others think Mapusaurus is the biggest. Recent discoveries show that the North American Saurophagonax is the worlds biggest dinosaurium carnivore. Most people agree that Spinosaurus holds the new record