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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.
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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?
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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:
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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
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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
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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?
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Learn about T-Rex fossil discoveries at:
http://www.fieldmuseum.org/
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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
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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.
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Use this diagram to see how big
the Brachiosaurus really was!
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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.
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Triceratops
The Three-Horned Beast
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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!
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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
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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/
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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«
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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
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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.
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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
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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
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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.
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THE END
You are official
´dino discoverers!µ
Kelli Plumeri
EDU6302