What was the size of the T Rex?

The T-rex was one of the largest land predators during its time, which grew at an average length of 43 feet or 13 meters. Although some dinosaurs exceeded or even competed with its size, it was still considered the biggest carnivore in that period. read more

T. rex had strong thighs and a powerful tail, which counterbalanced its large head (Sue's skull is 5 feet, or 1.5 m, long) and allowed it to move quickly. The 2011 study, which also modeled T. rex's muscle distribution and center of mass, suggests the giant could run 10 to 25 mph (17 to 40 km/h), as previous studies had estimated. read more

Most people reflexively assume that the North American Tyrannosaurus Rex--at 40 feet from head to tail and seven to nine tons--was the biggest carnivorous dinosaur that ever lived, The fact is, though, that T. Rex was outclassed by not one, but two, dinosaurs--the South American Giganotosaurus, which weighed about nine tons, and the northern African Spinosaurus, which tipped the scales at 10 tons. read more