Tyrannosaurus

Tyrannosaurus is a genus of meat-eating theropod that lived about 66 miljion years ago. It is also one of the most famous dinosaurs. It was long believed to be the biggest theropod ever. In past years, a couple of theropods (like Giganotosaurus and Spinosaurus) have been found that are bigger than Tyrannosaurus.

First finds
Specimen YPM 4192, the first remains ever found, were probably discovered in 1874 by Arthur Lakes near Golden in Colorado. However, it was just a tooth and it was mistaken for the tooth of Deinodon. In 1892, Edward Drinker Cope discovered AMNH 3982: the first certain skeleton parts (2 vertebrae) in South Dakota. He named it Manospondylus and believed it to be a herbivorous ceratopsid.