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The Mesozoic Era. Dinosaurs By: Mr. Litaker. The Age of The Dinosaurs. 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

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The mesozoic era

The Mesozoic Era

Dinosaurs

By: Mr. Litaker


The Age of

The Dinosaurs


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
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”


Mesozoic Era

  • The Mesozoic Era began about 245 mya and ended 66 mya

  • The were 3 Periods including

    • - Triassic Jurassic Cretaceous

  • At the beginning of the Mesozoic, Pangaea had formed

  • Breakup of Pangaea, a major geologic event, began in the late TRIASSIC and continued thru the CRETACEOUS.

  • Tethys Sea was a shallow embayment that separated India and Asia.



  • Dinosaur means terrible lizards 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.


The means terrible lizardsCoelophysis (below), a small meat eater that also walked on three toes and possessed hollow bones much like those found in birds.

The Dilophosaurus (above), a large carnivore that walked on three toes.



Brachiosaurus means terrible lizards is one of the better known sauropods




Kinds of dinosaurs
Kinds of means terrible lizardsDinosaurs


Allosaurus
Allosaurus means terrible lizards

Do you know

what the

Utah State

Fossil is?


Big al
Big Al means terrible lizards

  • 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 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.


The means terrible lizardsUtah 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 inUtah.


Where dinosaurs lived
Where Dinosaurs Lived means terrible lizards

  • See the world as it looked during

  • the Jurassic Period!



Paleontology
Paleontology means terrible lizards

  • 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
So what do you think means terrible lizardsa 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 almost 200 years,

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.


The almost 200 years, first dinosaur to be described

scientifically was Megalosaurus

in 1824, by William Buckland.

Buckland (1784-1856) was a

British fossil 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
Megalosaurus almost 200 years,


Did they have colors
Did They Have Colors? almost 200 years,

  • It is very difficult to figure out how the dinosaurs sounded, how they behaved, or what color they were.


Plant eaters
Plant-Eaters almost 200 years,

  • Most dinosaurs were plant-eaters like:

  • Triceratops

  • What do we call plant-eaters?

  • Herbivores


Meat eaters
Meat-Eaters almost 200 years,

  • Some were meat-eaters like:

  • T-Rex

  • What do we call meat-eaters?

  • Carnivores


The food chain
The Food Chain almost 200 years,

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? almost 200 years,

You may have

noticed that there

are no dinosaurs

around these days.

In fact, there haven't

been any around for

about 66 million

years.


What is the most likely held theory as to the demise disappearance of the dinosaurs
What is the most likely held almost 200 years, theory as to the Demise (Disappearance of) the Dinosaurs?


Well we don t know the real absolute theory of how they became extinct but
Well, we don’t know the real absolute theory of how they became extinct, but----

  • One thing for sure is……….

  • We will have an incredible time going back in time to learn about these marvelous creatures.


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