Millions of years ago, before there were people, giant reptiles lived on earth.
Some reptiles could fly.
Some reptiles lived in water.
Some lived on land and were called dinosaurs.
D is for diplodocus.
It had a long tail and a long neck.
Its tail was like a whip.
This dinosaur could not chew.
It had small teeth to pull leaves off trees.
The teeth could grind the leaves.