Geologic Timeline

By Alex Paich

  • Cambrian 570-500 MYA

    Earliest record of marine life with Trilobites being the dominant species.

  • Ordovician 500-435 MYA

    Ordovician 500-435 MYA
    Earliest fishes with invertebrates dominating Earth. Colentrates and mollusks become abundant and echinoderms expand in numbers and kinds.

  • Silurian 435-395 MYA

    Early terrestrial plants and animals peak in development.

  • Devonian 395-345 MYA

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

  • Carboniferous 345-280 MYA

    Carboniferous 345-280 MYA
    Earliest reptiles and coal forming forests. Abundant sharks and amphibians, Large and numerous scale trees and seed ferns.

  • Permian 280-225 MYA

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

  • Triassic 225-195 MYA

    Triassic 225-195 MYA
    Earliest dinosaurs, along with an abundance of cyades and conifers.

  • Jurrasic 195-136 MYA

    Jurrasic 195-136 MYA
    Earliest birds and mammals. Abundance of dinosuars and ammonites.

  • Cretaceous 136-65 MYA

    Cretaceous 136-65 MYA
    Devolopment of flowering plants and climax of dinosaus and ammonites which were soon after extinct. Decline of Brachipods and development of bony fishes.

  • Tertiary 95-0.3 MYA

    Tertiary 95-0.3 MYA
    Earliest placemental mammals with many species similar to those in modern times. Humans, mastadons, mammoths, and large carnivores.

  • Quaternary 0.3-Present Day

    Quaternary 0.3-Present Day
    Present times