Mesozoic era

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

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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

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