Dinosaurs lived over 230 million years ago.

Some dinosaurs were as small as chickens.

The largest dinosaur was Argentinosaurus, over 100 feet long.

Birds are modern descendants of theropod dinosaurs.

Dinosaurs dominated the Earth for about 165 million years.

The word ‘dinosaur’ means ‘terrible lizard.’

Some dinosaurs had feathers for insulation.

Tyrannosaurus rex had the strongest bite force of any land animal.

Fossils help scientists learn about extinct species.

The asteroid impact likely caused dinosaur extinction.