Did you know? Henry Fairfield Osborn president of the American Museum of Natural History named Tyrannosaurus rex in 1905. The generic name is derived from the Greek words τυράννος (tyrannos meaning "tyrant") and σαύρος (sauros meaning "lizard"). Osborn used the Latin word rex meaning "king" for the specific name. The full binomial therefore translates to "tyrant lizard the king" or "King Tyrant Lizard"[44] emphasizing the animal's size and perceived dominance over other species of the time. #dotdotsmile #ddsjanuarychallange #dinosuarprint Latin Words, Greek Words, Dot Dot Smile, Osborn, Tyrannosaurus Rex, Fairfield, Natural History, Generic, Lizard