Tyrannosaurus rex main content.

Tyrannosaurus rex

Part of Hall of Saurischian Dinosaurs.

T. Rex fossil mount in the Museum's Hall of Saurischian Dinosaurs. D. Finnin/© AMNH
The 4-foot-long jaw. The 6-inch-long teeth. The tiny arms. 

Almost everything about Tyrannosaurus rex indicates the enormous power of one of the largest theropod dinosaurs that ever existed.

The first skeleton of Tyrannosaurus rex was discovered in 1902 in Hell Creek, Montana, by the Museum's famous fossil hunter