Why is it called a Tyrannosaurus rex?

Tyrannosaurus Rex is by far the most popular dinosaur that ever lived, spawning a huge number of books, movies, TV shows, and even video games. What's truly amazing, though, is how much about this carnivore that was once assumed as fact has lately been called into question, and how much is still being discovered. read more

The species Tyrannosaurus rex (rex meaning "king" in Latin) often colloquialy called simply T-Rex is one of the most well-represented of the large theropods. read more

In 1905, Henry Fairfield Osborn, president of the American Museum of Natural History at the time, named Tyrannosaurus rex. T. rex was a member of the Tyrannosauroidea family of huge predatory dinosaurs with small arms and two-fingered hands. read more