period 5 rivera hist. timeline

By riveraje
  • birth of the solar system (5 billion years ago)

    birth of the solar system (5 billion years ago)

    10 billion years ago
  • eath began to form (4.6 bya)

    eath began to form (4.6 bya)

  • bacteria diversify (3.8 bya)

    bacteria diversify (3.8 bya)

    oldest organisms
  • photosynthesizing bacteria (3.7 bya)

    photosynthesizing bacteria (3.7 bya)

    grew faster
  • oldest fossil (3.5 bya)

    oldest fossil (3.5 bya)

    washed up on shore
  • oxygen appears (2.2 bya)

    oxygen appears (2.2 bya)

    appears in the enviorment, causing damage to living tissues
  • oldest eukaryote fossil (1.8 bya)

    oldest eukaryote fossil (1.8 bya)

    oldest definstive fossil
  • major glaciation period began (800 mya)

    major glaciation period began (800 mya)

    first 4 global ice ages set
  • fishes (480 mya)

    fishes (480 mya)

    diffrent from today
  • oxygen nears present day levels (400 mya)

    oxygen nears present day levels (400 mya)

    21%
  • protective ozone layer in place (600 mya)

    protective ozone layer in place (600 mya)

    all was water till then
  • reptiles (350 mya)

    reptiles (350 mya)

    diffrent from now
  • late tarassic (250 mya)

    late tarassic (250 mya)

    50%
  • dinosaur (220 mya)

    dinosaur (220 mya)

    emerged
  • pangea starts to brake apart (200 mya)

    pangea starts to brake apart (200 mya)

    due to heat
  • end cretaceous (65 mya)

    end cretaceous (65 mya)

    60-80% animals were extinct
  • primates(60 mya)

    primates(60 mya)

    oldest fossil
  • homeids (5.2 mya)

    homeids (5.2 mya)

    first known
  • modern humans (1000 years ago)

    modern humans (1000 years ago)

    throught out africe and europe
  • late plastocene (100000 years ago)

    late plastocene (100000 years ago)

    all animals over 45 lbs go extinct