The Mesozoic Era

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The Mesozoic Era

• The Age of the Dinosaurs

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The Triassic Period

• This is the first Period in the Mesozoic Era.
• This is a geological period that extended from
  about 250 to 200 Mya.
• The end and the beginning of this period are
  marked by major extinction events.
• Both marine and continental life show an adaptive
  radiation.
• Reptiles were really successful during this time.

3
The Jurassic Period

• This is the second Period in the Mesozoic Era.
• In the beginning of this period the continents
  were still together forming Pangaea but they were
  starting to drift apart.
• The minor extinction at the end of the Triassic
  Period made dinosaurs abundant during this time.
• The climate here was very hot and dry which made
  new groups of dinosaurs appear.

4
The Cretaceous Period

• Although dinosaurs ruled all through the
  Cretaceous Period the dominant dinosaurs changed
  and many new ones evolved.
• Frogs, turtles, salamanders, snakes and
  crocodiles were also present during this time.
• But the only mammals that existed here were shrew
  like mammals.
• But all this life was lost when a meteor crashed
  to Earth killing all dinosaurs.
• The land, skies and seas would never be the same
  after the Mesozoic Era ended.

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Websites I Used

• http//en.wikipedia.org/wiki/triassic
• http//en.wikipedia.org/wiki/mesozoic
• http//www.enchantedlearning.com/subjects/dinosaur
  s/mesozoic/jurassic
• http//science.nationalgeographic.com/science/preh
  istoric-world/cretaceous.html