Geologic Timeline

By spikedil

  • Cambrian 570-500 MYA

    Earliest record of marine life

  • Ordovician 500-435 MYA

    Earliest fish that are jawless and later, jawed and armored fish

  • Silurian 435-395 MYA

    Tiktaalik Eurypterids develop

  • Devonian 395-345 MYA

    Devonian 395-345 MYA
    Armored fish go extinct but abundance of several species of fish

  • Carboniferous 345-280 MYA

    Earliest reptiles, scale trees and seed ferns

  • Permian 280-225 MYA

    Permian 280-225 MYA
    Extinction of many types of marine animals including trilobites

  • Triassic 225-195 MYA

    Triassic 225-195 MYA
    Earliest dinosaurs, abundant cycads and conifers

  • Jurassic 195-136 MYA

    Jurassic 195-136 MYA
    Earliest birds and mammals abundant dinosaurs and ammonites

  • Cretaceous 136-65 MYA

    Cretaceous 136-65 MYA
    Earliest flowering plants, climax of dinosaurs following by their extinction

  • Tertiary 65-1.8 MYA

    Tertiary 65-1.8 MYA
    Earliest placental mammals, modern mammals and large running mammals

  • Quaternary 1.8 MYA-present

    Large carnivores, Neanderthals, humans and mastodons