Tyrannosaurus is a genus of coelurosaurian theropod dinosaur. The species
Tyrannosaurus rex (
rex meaning "king" in Latin), is one of the most well-represented of the large theropods.
Tyrannosaurus lived throughout what is now western North America, on what was then an island continent known as Laramidia.
Tyrannosaurus had a much wider range than other tyrannosaurids. Fossils are found in a variety of rock formations dating to the Maastrichtian age
(Wikipedia)