Dinosaur?

Dinosaur, one of a group of extinct reptiles that lived from about 230 million to about 65 million years ago. The word dinosaur was coined in 1842 by British anatomist Sir Richard Owen, derived from the Greek words deinos, meaning “marvelous” or “terrible,” and sauros, meaning “lizard.” For more than 140 million years, dinosaurs reigned as the dominant animals on land.