Transcript dinosaurs - lakshya education hub

CONTENTS
SL.NO. PARTICULARS
1
Introduction
2
History
3
How come to this name?
4
Kinds of Dinosaurs
5
Characterizes of Dinosaurs
6
Paleontology
7
Photos
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 imagined
such animals existed.
Dinosaurs
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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”
How comes to this name?

The name dinosaur comes from the term
Dinosauria, which means terrible lizards.

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Dinosaur is 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 first described in the early 1800’s.
Kinds of
Dinosaurs
Allosaurus
Do you know what the
Utah State Fossil is?
The Utah State Fossil:
The Allosaurus
The allosaurus was designated
the State Fossil in 1988. More allosaurus
specimens have been found in two of Utah's
quarries than any other dinosaur.
Sixty
individuals, from juveniles to adults, were
found at one site in Utah.
Big Al
Nickname
Age
: Different Lizard
: 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
inches long. 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.
Where Dinosaurs
Lived
•See the world as it looked during
the Jurassic Period!
•The Jurassic climate was warm
•The Air was damp, like a tropical forest
Paleontology

Paleontology (PAY lee ahn TAHL uh jee), is
the study of animals, plants, and other
organisms that lived in prehistoric times
(more than 5,500 years ago). Fossil remains
of organisms occur in layers of sedimentary
rocks (rocks formed when mineral matter
settled out of air, ice, or water). The
organisms that are now fossils were alive
when the rocks were being formed. They
were buried and preserved as the layers of
rock
piled
up.
So what do you think
a Paleontologist is?
A paleontologist
is a scientist who studies
paleontology,
learning
about
the forms of life that
existed in former geologic
periods,
chiefly
by
studying fossils.
Fossils are the reason we have most of this information.
For almost 200 years, paleontologists have been
discovering fossils all over the world. They’ve identified
more than 330 different kinds of dinosaur fossils. And
every year, they find new fossils. These fossils can tell us
how big an animal grew, what it ate, even how it died.
Dinosaur National Monument
Utah/Colorado
A stony frieze at one of the continent’s largest
and richest dinosaur quarries holds the bones of
beasts that ruled the Jurassic: stegosaurs,
allosaurs, apatosaurs and many more.
First Described Dinasaures
The first dinosaur to be described
scientifically was Megalosaurus
in 1824, by William Buckland.
Buckland (1784-1856) was a
Britishfossil hunter and
clergyman who discovered
some Megalosaurus fossils in
1819 and named the reptile
in 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).
Megalosaurus
Did They Have Colors?
It is very difficult to figure out how the
dinosaurs sounded, how they behaved, or what
color they were.
Plant-Eaters
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Most dinosaurs were plant-eaters like:
Triceratops
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What do we call plant-eaters?
Herbivores
Meat-Eaters
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Some were meat-eaters like:
T-Rex
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What do we call meat-eaters?
Carnivores
The Food Chain
Meat-eating animals (carnivores like Tyrannosaurus rex)
get their energy by eating other animals, mostly plant-eating
animals (herbivores like Triceratops). The herbivores
get their energy by eating plants (like cycads).
Where Did Everybody Go?
You may have noticed that
there
are no dinosaurs around these
days.In fact, there haven't
been any around forabout 66
million years.
Well, we don’t know the real absolute theory of how
they became extinct, but----
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One thing for sure is……….
We will have an incredible time going back in time to
learn about these marvelous creatures.