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Close your eyes. Imagine the Earth millions of years ago. Giant reptiles ruled the planet. Now join TFK as we travel back in time. Let’s explore the world of dinosaurs!
![](https://www.timeforkids.com/wp-content/uploads/2019/01/lotsofdinosaurs.jpg?w=1024)
This is a Tyrannosaurus rex. It was one of the largest dinosaurs. It was a meat eater. It had sharp claws and teeth. It preyed
prey
PETER LILLIE/GETTY IMAGES
to hunt and kill for food
(verb)
The birds preyed on small insects.
on other animals.
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Diplodocus
The Diplodocus was long. It was about the length of two school buses. It ate plants. Its long neck helped it reach leaves.
![](https://www.timeforkids.com/wp-content/uploads/2019/01/longdino.jpg?w=1024)
Heterodontosaurus
Other plant-eating dinos stood tall on two feet. This dino’s fingers helped it grasp
grasp
BALLYSCANLON/GETTY IMAGES
to take and hold
(verb)
The mother grasped her child's hand.
food. It ate from treetops. It may have eaten small animals too.
![](https://www.timeforkids.com/wp-content/uploads/2019/01/dinosaursmall.jpg?w=1024)
Triceratops
The Triceratops traveled in herds
herd
CHARLIE SUMMERS—MINDEN PICTURES
a large group of animals
(noun)
Buffalo migrate in herds.
. The dinosaur looked for plants to eat. Triceratops had three horns. (Tri means “three.”) Horns helped it defend itself from predators
predator
ANDREY NEKRASOV/BARCROFT MEDIA/BARCROFT MEDIA—GETTY IMAGES
an animal that kills and eats other animals to survive
(noun)
The great white shark is a fierce predator.
.
![](https://www.timeforkids.com/wp-content/uploads/2019/01/orangedinos.jpg?w=1024)
These are paleontologists. They are scientists. They help us learn about life long ago. They study the fossils of dinosaurs and plants.
![](https://www.timeforkids.com/wp-content/uploads/2019/01/paleontologists.jpg?w=1024)
Did You Know?
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The word dinosaur means “terrible lizard.” It comes from the Greek language.