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Fossils

We learn about dinosaurs from their

fossils. We·ve all heard of fossilsand know a little about them. But

what do we really know?

Fossils are the ancient remains of plants

and animals.Some plant and animals remains are

preserved by nature. They petrify to

become fossils.

Dinosaur fossils have been found all over the world.

Scientists can measure the age of most

fossils through a process called

radiocarbon dating.



Fossil Facts Continued«

Animal fossils are often teeth, bones,

or shells. Rarely, whole bodies of

animals may be preserved.Why do you think this is?

Dinosaur remains are millions of years old.Do you remember the name of the process

that tells scientists how old fossils are?



Carnivore ± Dinosaurs who were carnivoresate meat only .

Herbivore ± Dinosaurs who were herbivores

ate plants only .

Omnivore ± Dinosaurs who were omnivoresate both plants and meat.

What are you?

There were three types of dietsfor dinosaurs. These are:



I WANT TO KNOW ABOUT

DINOSAURS!!!

o How many kinds were there?Scientists have found more than 300 kinds of dinosaur fossils. It is likely that there aremore dinosaurs awaiting discovery.

o Where in the world are they from?They have been found all over the world on allof our 7 continents. In our country, USA, they have been found in many of our 50 states.

Do you know the names of all 7 continents?Click HERE to find out!

To learn more about dinosaur fossils and wherethey were found, click on the following link:

http://www.zoomdinosaurs.com



Height ± 18 feet

Weight ± 7 tons

Length ± 40 feet

Diet ± carnivore

Top running speed ± about 20 mph

The Tyrannosaurus Re , or T-R ex , is probably

the most popular and vicious of all prehistoric animals



The T-Re jaws were 3 feet around. Each

of its 60 teeth were shaped like daggers andwere 6 inches long.

The T-Re had giant muscular legs and

small front arms.

How do you think it caught prey?



Learn about T-Rex fossil discoveries at:

http://www.fieldmuseum.org/



BrachiosaurusBrachiosaurus

±

Brachiosaurus is one of the biggest dinosaurs ever found.

They roamed the Earth over 130 million years ago!

Height ± about 40 feet

Weight ± 80 ± 100 tons(this is more than 20 elephants!)

Length ± 70-90 feet

Diet - herbivore



Brachiosaurus means ³arm lizard´

The first rachiosaurus was discovered over 100 years ago in Colorado.

It could have looked over the top of a three-

story building.

Some scientists believe it lived in the water,

using its long neck to keep its head above

the surface.



Use this diagram to see how big

the Brachiosaurus really was!



Weight ± 6 tons

Length ± 30 feet

Diet ± omnivore

Fossils found ± US A and Canada

Along with the T-Rex, Triceratops is probably

one of the most famous dinosaurs ever found.



Triceratops

The Three-Horned Beast



The triceratops has three horns on its head.

The two main horns on the forehead area

are each more than 3 feet long! The horns were used for wrestling and

charging the enemy.

The ³frill´ is the part of the head that

e pands out beyond the neck and back.

The head and frill together were more than

6 feet long!



Stegosaurus The Stegosaurus had bony plates down its back.

Some scientists believe these were used for protectionfrom flesh-eating dinosaurs.

Weight ± 2 tons

Length ± 30 feetDiet ± omnivore

Fossils found ± USA, Europe, Africa,

India, and China



Stegosaurus was first discovered in 1877 in

Colorado. S tegosaurus means ³plated lizard´.

It had a small tube-like head, small teeth,

and the brain the size of a walnut.

Check out more Stegosaurus facts on the

following link:

http://www.stegosaurus.org/



We have learned about four famous dinosaurs.

These are:

Tyrannosaurus Rex,

Brachiosaurus,Triceratops, and

Stegosaurus

But when did they exist?Let¶s look at the following page

to compare them«



Exactly how old are dinosaurs?

Let·s compare them to other

animals we know«The ge of the Dinosaurs

050

100150200

250

F i s h

S t e g

o s a u r u s

R e p

t i l e s

B r a c h i o s a

u r u s

T - R e x

B

i r d s

M a m m

a l s

animal types

y e a r s b e f o r e t h e

p r e s e n t

( m i l l i o n s

)

Examine a Geologic Time chart HERE



What happened to the

Dinosaurs?There are many different ideas that scientists have abouthow the dinosaurs became e tinct. Some scientistsbelieve the dinosaurs caught an infectious disease.Some say the volcanoes erupted all over the world.

We don¶t really know for sure.Check this link to find out other theories on e tinction.

But what does extinct mean?

Extinct ± Animal breeds that have completely died out.They do not e ist anymore.

Endangered ± Animal breeds that there are very lownumbers of. They are in danger of dying out

completely.



What other animals are extinct

or endangered? Some examples

are:Extinct

Caribbean monk Seal

Dodo ird

Heath Hen

Dire Wolf

Stag-moose

American Mastodon

Mammoths

Endangered

Puma

Jaguar

Hawaiian monk Seal

lue Whale

Humpback Whale

rown Pelican

American Crocodile

Learn more about endangered and extinct animals at:

http://www.kids.msn.com/kidz/endangeredspecies.asp



You have learned about many dinosaur

breeds and fun facts. Use the followinglinks to continue your discoveries«

Dinosaur Dig-Kid¶s Habitat

http://www.sdnhm.org/kids/dinosaur/

Children¶s Stomping Ground

http://www.oink.demon.co.uk/topics/dinosaur.htm



Resources

http://www.zoomdinosaurs.com

http://www.ucmp.berkeley.edu/trex/trexpo.htm/

http://www.stegosaurus.org

http://www.kids.msn.com/kidz/endangeredspecies.asphttp://www.sdnhm.org/kids/dinosaur/

http://www.oink.demon.co.uk/topics/dinosaur.htm

Lambert, D. (1983). A Field Guide to Dinosaurs.

Avon Books. New York, New York

Hincks, J. (1990). The Rourke Dinosaur Dictionary.

Rourke Enterprises, Inc.

Russell, W. (1994). Fossils. The Rourke Corporation, Inc.



THE END

You are official

´dino discoverers!µ

Kelli Plumeri

EDU6302

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