Geologic Timeline

By tyler5040

  • Cambrian 570-500MYA

    Cambrian 570-500MYA
    Early animals of marine life

  • Ordovician 500-435MYA

    Ordovician 500-435MYA
    Ocean creatures become more dominant

  • Silurian 435-395MYA

    Silurian 435-395MYA
    earliest animal and plant life

  • Devonian 395-345MYA

    Devonian 395-345MYA
    Earliest amphibians and ammonites. Armored fish become extinct

  • Carboniferous 345-280MYA

    Carboniferous 345-280MYA
    Sharks and amphibians become abundant. Swamps and coal forests. Earliest reptiles.

  • Permian 280-225MYA

    Permian 280-225MYA
    Many marine animals become extinct.

  • Triassic 225-195MYA

    Triassic 225-195MYA
    Earliest dinosaurs. Many cycads and conifers.

  • Jurassic 195-136MYA

    Jurassic 195-136MYA
    Abundance of dinosaurs and ammonites. Earliest birds and mammals.

  • Cretaceous 136-35MYA

    Cretaceous 136-35MYA
    Dinosaurs become extinct. Earliest flowering plants. Decline of brachiopods. Many bony fish.

  • Tertiary 65-1.8MYA

    Tertiary 65-1.8MYA
    Earliest placental mammals. Modern mammals. Large running mammals.

  • Quaternary 1.8MYA-Present

    Quaternary 1.8MYA-Present
    Large carnivores, humans, and mastadons.