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Geologic Column

By abriles11
  • Triassic
    251,000 BCE

    Triassic

    first dinosaurs; rise of mammal-like reptiles
  • Jurassic
    199,600 BCE

    Jurassic

    giant dinosaurs; early birds;first mammals
  • Creataceous
    145,500 BCE

    Creataceous

    mass extinctions(including dinosaurs); flowering plants appear
  • Mississippian
    35,920 BCE

    Mississippian

    amphibians spread;sharks and bony fish;winged insects
  • Pennsylvanian
    31,810 BCE

    Pennsylvanian

    giant insects;first reptiles
  • Permian
    29,900 BCE

    Permian

    moder insects;reptiles spread;evergreens;extinction of trilobites
  • Recent (Holocene)
    11,477 BCE

    Recent (Holocene)

    end of last Ice Age, rise of human civilization
  • Tertiary
    1800 BCE

    Tertiary

    Pliocene, peak of mammals; modern invertebrates, rize of grazing mammals,primitive apes;whales;first modern mammals