What is the size of a Tyrannosaurus rex?

Tyrannosaurus rex, one of the largest land predators that ever lived, was even bigger than previously thought, according to a new study. Scientists used computer modeling to virtually weigh the dinosaur king, which went extinct 65 million years ago. read more

A Tyrannosaurus rex growth curve is S-shaped, with juveniles remaining under 1,800 kg (4,000 lb) until approximately 14 years of age, when body size began to increase dramatically. During this rapid growth phase, a young Tyrannosaurus rex would gain an average of 600 kg (1,300 lb) a year for the next four years. read more

Tyrannosaurus rex, one of the largest land predators that ever lived, was even bigger than previously thought, according to a new study. Tyrannosaurus rex, one of the largest land predators that ever lived, was even bigger than previously thought, according to a new study. read more

Well, the average size for Tyrannosaurus seems to be about what you see in the holotype (CM 9380), the New York specimen (AMNH 5027), Stan (BHI 3033), and the Wankel Rex (MOR 555). read more