Successfully reported this slideshow.
We use your LinkedIn profile and activity data to personalize ads and to show you more relevant ads. You can change your ad preferences anytime.

Mesozoic era

3,753 views

Published on

This presentation give a brief overview of mesozoic era; its dominant and extincted animals, its plantation and climate.

Published in: Education, Technology
  • Be the first to comment

Mesozoic era

  1. 1. The Mesozoic Era When dinosaurs ruled the earth Presented by: Sana Ahmed Roll no. 22
  2. 2. • Began approximately 245 million years ago • Subdivided into 3 periods • Ended about 66 million years ago with a major mass extinction
  3. 3. Mesozoic Reptiles Alligator Lizard
  4. 4. rs rosau Pte Ichthyosau Dinosaurs Crocodile rus
  5. 5. Triassic Period 245 - 206 million years ago • Immediately after the Permian Mass Extinction • Lots of new area is open for animals to live • Reptiles are really successful here • Triassic climate is relatively cool
  6. 6. Triassic Fauna • Earliest dinosaurs Eoraptor
  7. 7. Lesothosaurus Pisanosaurus
  8. 8. Triassic Flora • Mosses, scale trees, ginkgo trees etc Mosses
  9. 9. Scale trees (palm trees etc) Ginkgo trees
  10. 10. The Jurassic Period 206 - 144 Million Years Ago • 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
  11. 11. Jurassic Fauna
  12. 12. Ankylosaurus
  13. 13. Triceratops Pterosaurs Ichthyosaurus
  14. 14. Jurassic Flora • Lush forest developed • Conifers dominated
  15. 15. The Cretaceous Period 144 - 66 million years ago • The last period when Dinosaurs lived • Ends with a mass extinction around 66 million years ago • First flowering plant appeared
  16. 16. Cretaceous Flora
  17. 17. Cretaceous fauna Survived Became extinct • • • • Marine animals Dinosaurs Pterosaurs Ichthyosaurus • • • • Many birds Fish, squid, sharks Many reptiles Some mammals
  18. 18. Summary Mesozoic era • Witnesses gradual rifting of Pangaea • Climate varied from hot and humid to cold one • Evolution, dominance and extinction of non-avian dinosaurs • Appearance of first bird • Appearance of mammals

×