1. DINOSAURS
WHERE DID THEY GO?

2. Dinosaurs What do we know about them?
Dinosaurs lived on earth more than 215 million years ago
They lived in most parts of the world
They ruled the earth for nearly 150 million years
Dinosaurs have been extinct for 65 million years
Extinct – something that once alive but no longer exist anywhere on the earth

3. How Do We Know About Dinosaurs?
Paleontologist – scientist who studies fossils
Fossil – what is left of a plant or animal that lived long ago
Dinosaur – animal that lived millions of years ago
Dinosaurs were not lizards or reptiles but many did lay eggs. Some had skin like crocodiles while others skin was much smoother.

4. How a Dinosaur Fossil is Made?
Step 1:
A dinosaur lives on Earth and roams the land.
Step 2:
A dinosaur dies and its body lays on the land.
Step 3:
Over time wind and rain help to cover the dinosaurs body with mud, sand, and leaves.
Step 4:
After millions of years the mud, sand, and leaves turn to rock. The bones or shape of the dinosaurs body are left in the rock and create a fossil.

5. How do Scientist Get Fossils?
Paleontologist use special tools and chip fossils carefully from rocks
The fossils are then taken to a museum where they are cleaned, measured, and studied.
Most fossils are found in pieces
Scientist try to put the fossil pieces together.
Reconstruct – to rebuild or put together like puzzle pieces

6. What Have Scientist Learned From Dinosaur Fossils?
There were different types of dinosaurs:
Some were small
Like a chicken
Some were tall
3 story building
Some were plant-eaters
Flat teeth
Some were meat-eaters
Sharp teeth

7. More Dinosaurs Some walked on 4 legs Others walked on 2 legs
Like animals today
Others walked on 2 legs
With 2 short arms
Many could fly like birds
Others swam like alligators

8. Dinosaur Names Paleontologist give each dinosaur a name that best describes it.
STEGASAURUS:
Walked on 4 legs
Plant-eater (flat teeth)
Sharp plates on back
Spikes on tail

9. Tyrannosaurus Rex Tyrannosaurus Rex means “lizard king”
One of the fiercest of all dinosaurs
Meat-eater
About 12ft-16ft. Tall
Walked on 2 legs