History Of The Earth

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History Of The Earth

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

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