Dinosaurs By The Decades: A Chronology Of The D... -

The discovery of Deinonychus suggests dinosaurs were active, warm-blooded, and related to birds .

Megalosaurus becomes the first dinosaur officially named by William Buckland . 1842: Sir Richard Owen coins the term " Dinosauria Dinosaurs by the Decades: A Chronology of the D...

Rivals Edward Drinker Cope and Othniel Charles Marsh discover hundreds of species in the American West, including iconic giants like Triceratops , Stegosaurus , and Brontosaurus . The discovery of Deinonychus suggests dinosaurs were active,

Dinosaur research slows during WWII, but they remain fixtures in film and children's literature. including iconic giants like Triceratops

" ("fearfully great lizards") to describe the unique group of reptiles.

Scientists propose that an asteroid impact caused the mass extinction 66 million years ago.

The American Museum of Natural History puts Tyrannosaurus rex on display, making it the most famous predator in history.