Tyrannosaurus was a large predator that lived in the Upper Cretaceous 65 million years ago. They lived in the North American continent. Adult Tyrannosaurus was up to 42 feet long, 20 feet tall at the hip, and weighed about 6 tons. The teeth of the Tyrannosaurus were up to 12 inches long.
The Tyrannosaurus or T-Rex was a meat eater. The T-Rex was probably both a hunter an a scavenger. It had a very strong jaw, and its bite power could snap the bones of other dinosaurs.
The T-Rex had teeth of different shapes. The teeth at the front of the upper jaw were closely packed, D-shaped in cross-section. They had reinforcing ridges on the rear surface that were chisel-like and curved backwards. Those features reduced the risk that the teeth would snap when the T-Rex bit and pulled. The remaining teeth were robust, like "lethal bananas" rather than daggers, more widely spaced and also had reinforcing ridges. Those in the upper jaw were larger than those in all but the rear of the lower jaw. The largest found so far is estimated to have been 12 inches long including the root when the animal was alive, making it the largest tooth of any carnivorous dinosaur yet found.
This natural history set includes a 5 3/4 inch conical tooth. The T-Rex had 50 to 60 conical teeth from 1 to 9 inches in length. These conical teeth were made to sustain great impact force of hitting the body of its prey when attacking and holding prior to the kill.