History Of The Earth

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  • 1. Housekeeping
    • Ms. Gemmell
    • Signout
    • Cellphones
    • Wiki
    Evolution
  • 2. Evolution History of Life on Earth Evolution
  • 3. Simpson’s Clip
    • What scientific theory is being described by this clip?
    • What does evolution mean?
    • What were the earliest organisms on this planet?
    Evolution
  • 4.
    • 4.5 Billion to 650 Million years ago
    • Oldest known rocks = 3.8 Billion years old!
      • Canadian Shield
    • Oldest known fossils = 3.6 Billion years old!
      • Unicellular organisms (Bacteria)
    • Oxygen = 2.3 Bya
    • Oldest fossil multicellular organisms = 700 Mya
    Precambrian Evolution
  • 5. 11/16/09 Evolution
  • 6. Precambrian Evolution
  • 7. 11/16/09 Evolution
  • 8. 11/16/09 Evolution
  • 9. Early Palaeozoic Evolution
    • 540 - 348 Mya
    • Cambrian Explosion
      • Invertebrates (Trilobites, Echinoderms, Molluscs)
    • Primitive Plants
    • First Corals
    • Primitive (jawless) Fishes
  • 10. 11/16/09 Evolution
  • 11.  
  • 12. Early Palaeozoic Evolution
  • 13. Molluscs
  • 14. Evolution Trilobite
  • 15. Middle Palaeozoic Evolution
    • 438 - 360 Mya
    • First Jawed Fishes
    • First Vascular Plants on Land
    • First Insects
    • The Age of Fishes
      • Dunkleostus
      • Many Coral Reefs
  • 16. 11/16/09 Evolution
  • 17. Middle Palaeozoic Evolution Dunkleostus
  • 18. 11/16/09 Evolution
  • 19. 11/16/09 Evolution
  • 20.  
  • 21.  
  • 22.
    • 360 - 248 Mya
    • Coal Swamps Everywhere!
    • Many Amphibians
      • Dimetrodon
    • Gymnosperms dominate
    Late Palaeozoic Evolution
  • 23. 11/16/09 Evolution
  • 24. Late Palaeozoic Evolution Coal Swamp
  • 25. Evolution Dimetrodon
  • 26. 11/16/09 Evolution “ Dinosaur” Comes from the greek “deinos” for “terrible, powerful, and wondrous” and from another greek word “sauros” for “lizard”
  • 27.
    • 248 - 208 Mya
    • Permian / Triassic Extinction
      • 96% Marine animals
      • 70% Terrestrial vertebrates
    • Pangea
    • Dawn of the Dinosaurs!
    Triassic Evolution
  • 28. 11/16/09 Evolution
  • 29. Evolution
  • 30. Jurassic Evolution
    • 208 - 146 Mya
    • Many Marine Reptiles
      • Icthyosaurs
      • Plesiosaurs
    • Belemnites
    • First Sauropods (Giant herbivorous dinos)
    • First Birds
    • First Flowers
  • 31. 11/16/09 Evolution
  • 32. Evolution Plesiosaur Pleiosaur
  • 33.
    • Up to 146 - 65 Mya
    • The Golden Age of Dinosaurs
      • Tyrannosaurus rex
      • Triceratops
      • Stegasaurus
    Cretaceous Evolution
  • 34. 11/16/09 Evolution
  • 35. Evolution Tyrannosaurus rex
  • 36. Compsognathus Triceratops Brachiosaurus Pteranodon
  • 37. Spinosaurus
  • 38. Basilosaurus
  • 39. Alphodon
  • 40. Cretaceous / Tertiary Boundary Evolution
    • 65 Mya
    • Major Extinction event
      • Almost 50% of animal species on planet die
      • Theories?
        • Impact
        • Volcanism
        • Disease
  • 41. 11/16/09 Evolution
  • 42.  
  • 43. Chicxulub Impact Site
  • 44.  
  • 45. Tertiary Evolution
    • 65 – 1.8 Mya
    • Radiaton of Mammals!
    • First Hominds towards end
  • 46. 11/16/09 Evolution
  • 47. Evolution Uintatherium Rhodocetus
  • 48. Evolution
  • 49. Evolution
  • 50. Evolution
  • 51. Most Recent Ice Age Evolution
    • 18, 000 ya
    • Gigantism
    • Evidence of Homo sapiens
      • Bering Land Bridge
  • 52. 11/16/09 Evolution
  • 53. Evolution Mammoth Giant Sloth
  • 54. Evolution
  • 55. Evolution
  • 56. Evolution
  • 57. Plate Tectonics
    • Video Clip
    Evolution
  • 58.
    • Great Resource for studying:
      • http://www.enchantedlearning.com/subjects/Geologictime.html
    11/16/09 Evolution
  • 59. Wrap-up
    • Which organisms retained shape over time?
    • Which changed?
    • Why do you think some changed and some stayed the same?
      • Changing Earth
    Evolution
  • 60. Bibliography
    • http://www.scotese.com/earth.htm
    • www.search4dinosaurs.com/burgess_shale.html
    • http://deepseanews.com/wp-content/uploads/2009/06/Dunkleosteus_BW1.jpg
    • www.karencarr.com/gallery_permian_detail.htm
    • krlphotography.typepad.com/.../trilobite1.htm
    • www.uio.no/forskning/predatorx/english.htm
    • www.arizonaskiesmeteorites.com
    Evolution