Age of Dinosaurs

8/14/2019 Age of Dinosaurs

1/31


2/31

Millions of

years ago,Great beasts called"dinosaurs" thundered

over the earth.

Yet up until the last

century, when the

first dinosaur fossils

were discovered, no

one even imaginedsuch animals existed.


3/31

Dinosaurs

Before there were any people there

were dinosaurs.

Dinosaurs were one of several kinds

of prehistoric reptiles that lived during

the Mesozoic Era the Age of the

Reptiles


4/31

The name dinosaur comes from the

term Dinosauria, which means

terrible lizards.


5/31

Dinosauris the name of a group of

prehistoric reptiles that ruled the earth

about 160 million years ago. These animals died out millions of

years ago, but they have fascinated

people ever since they were firstdescribed in the early 1800s.


6/31

Kinds of

Dinosaurs


7/31

Allosaurus

Do you knowwhat theUtah State

Fossil is?


8/31

The Utah State Fossil:The Allosaurus

The allosaurus wasdesignatedthe State Fossil in 1988.More allosaurus specimenshave been found in two ofUtah's quarries than any

other dinosaur. Sixty


9/31

Big Al

Nickname: Different Lizard Age: 160-145 million years ago during the

late Jurassic Period Size: 35-40 feet long (as long as two big

Python snakes!) Weight: Anywhere from 2 tons to over 5

tons

Characteristics: Sharp claws up to 6 incheslong. Teeth up to almost 4 inches long Special Talents: Super smart compared to

other dinosaurs. Extremely fierce. Known

to attack other dinos twice his size.


10/31

Where Dinosaurs Lived

e the world as it looked duringJurassic Period!


11/31

The Jurassic climate was warmThe Air was damp, like a tropical fores


12/31

Paleontology

Paleontology (PAY lee ahn TAHL uh jee), isthe study of animals, plants, and otherorganisms that lived in prehistoric times(more than 5,500 years ago). Fossil remainsof organisms occur in layers of sedimentaryrocks (rocks formed when mineral mattersettled out of air, ice, or water). The

organisms that are now fossils were alivewhen the rocks were being formed. Theywere buried and preserved as the layers ofrock piled up.


13/31

So what do you think

a Paleontologist is?A paleontologistis a scientist

who studiespaleontology,learning aboutthe forms of lifethat existed informer geologicperiods, chiefly by

studying fossils.


14/31

Fossils are the reason wehave most of thisinformation. For almost 200

years, paleontologists havebeen discovering fossils allover the world. Theyve

identified more than 330different kinds of dinosaurfossils. And every year, they

find new fossils. These fossils
http://kids.discovery.com/dinos/sources/dictionary.htmlhttp://kids.discovery.com/dinos/sources/dictionary.html


15/31

A stony frieze at one of the continents largestand richest dinosaur quarries holds the bones ofbeasts that ruled the Jurassic: stegosaurs,

allosaurs, apatosaurs and many more.

Dinosaur National MonumentUtah/Colorado


16/31

The first dinosaur to be described

scientifically was Megalosaurus

in 1824, by William Buckland.

Buckland (1784-1856) was aBritishfossil hunterand

clergyman who discovered

some Megalosaurus fossils in

1819 and named the reptilein 1824. It was the first dinosaur

ever described scientifically and

first theropod dinosaur discovered

(this is all in hindsight, because the dinosaurs had not yet been

recognized as a separate taxonomic group - the word dinosaur

hadn't even been invented yet).
http://www.enchantedlearning.com/subjects/dinosaurs/dinos/Megalosaurus.shtmlhttp://www.enchantedlearning.com/subjects/dinosaurs/glossary/Paleontologists.shtmlhttp://www.enchantedlearning.com/subjects/dinosaurs/glossary/Theropod.shtmlhttp://www.enchantedlearning.com/subjects/dinosaurs/glossary/Theropod.shtmlhttp://www.enchantedlearning.com/subjects/dinosaurs/glossary/Paleontologists.shtmlhttp://www.enchantedlearning.com/subjects/dinosaurs/dinos/Megalosaurus.shtml


17/31

Megalosaurus


18/31

Did They Have Colors? It is very difficult to figure out how the

dinosaurs sounded, how they

behaved, or what color they were.


19/31

Plant-Eaters

Most dinosaurs were plant-eaters like:

Triceratops

What do we call plant-eaters?

Herbivores


20/31

Meat-Eaters Some were meat-eaters like:

T-Rex What do we call meat-eaters?

Carnivores


21/31


22/31


23/31

Meat-eating animals (carnivores like Tyrannosaurus rex)

get their energy by eating other animals, mostly plant-eatinganimals (herbivores like Triceratops). The herbivores

get their energy by eating plants (like cycads).

The Food Chain

h id b d


24/31

Where Did Everybody Go?

You may havenoticed that thereare no dinosaursaround these days.

In fact, there haven'been any around forabout 66 million

years.


25/31


26/31


27/31


28/31


29/31

W ll d t k


30/31

Well, we dont know

the real absolute

theory of how theybecame extinct, but----

One thing for sure is.

We will have an incredible time going

back in time to learn about thesemarvelous creatures.


31/31

Documents

Age of Dinosaurs