Skylar's Geologic timeline

By skybot3000
  • 65

    Tertiary

    Tertiary
    Earliest placental mammals, modern mammals, large roaming mammals.
  • 136

    Cretaceous

    Cretaceous
    Early flowering plants, climax of dinosaurs, followed by their extinction. Great extinction. Great decline of brachiopods. Abundance of bony fish.
  • 195

    Jurassic

    Jurassic
    Earliest birds and mammals. Abundance of dinosaurs and ammonites.
  • 225

    Triassic

    Triassic
    Earliest dinosaurs, abundance of cycads and conifers.
  • 280

    Permian

    Permian
    Extinction of many types of marine animals.
  • 345

    Carboniferous

    Carboniferous
    Abundant shark and amphibians. Large swamps and coal forming forest. Earliest reptiles. Scale trees and seed ferns.
  • 395

    Devonian

    Devonian
    Armored fish go extinct, but abundance of several species of fish exist. Earliest amphibians and ammonites.
  • 435

    Silurian

    Silurian
    Earliest terrestrial plants and animals, tiktaalik eurypterids develop.
  • 500

    Ordovician

    Ordovician
    Invertebrates are dominant, mollusks become abundant, earliest fish that are jawless and later jawed and armored fish.
  • 570

    Cambrian

    Cambrian
    Earliest record of marine life trilobites are dominant.

  • Quaternary

    Quaternary
    Large carnivores/ neanderthals, mastodons.

  • Present

    Present
    Humans, mass technology, education, ability to travel to space, cheeto for president.