geology thing

By perezman
  • 543 BCE

    Cambrian Period: 543-488MYA

    A large number of new animal species appear in a relatively short time. First fish appear; no sign of life on land yet.
  • Period: 541 BCE to 500 BCE

    Paleozoic era - 541MYA

  • 488 BCE

    Ordovician Period: 488-443MYA

    First land plants appear. Primitive fungi and sea weed appears. The oceans are full of coral, mollusks, worms, primitive fish, and echinoderms such as starfish.
  • 443 BCE

    Silurian Period: 443-417MYA

    Spiders, scorpions, insects, complex plants, and fish with bony jaws appear. Fish have now adapted to living in rivers and fresh water.
  • 417 BCE

    Devonian Period: 417-354MYA

    Fish spread across the oceans. Amphibians appear. The first trees spread across the land with other plants; creating the first forests.
  • 354 BCE

    Carboniferous Period: 354-299

    Many swamps appear on land and sponge reefs in the oceans. Reptiles, early winged insects, and cockroaches appear.
  • 299 BCE

    Permian: 299-251MYA

    Amphibians dominate the land. Early cone-bearing plants appear. Period ends with the largest mass extinction known with 95% of all marine life and 50% of all animals extinct.
  • 251 BCE

    Triassic Period: 251-200MYA

    The few survivors of the Permian extinction go on to populate the land and oceans. new species like mammals, dinosaurs, and crocodiles appear.
  • Period: 251 BCE to 65 BCE

    Mesozoic Era: 251-65MYA

  • 200 BCE

    Jurassic Period: 200-145MYA

    Dinosaurs dominate the land. Mammals are common but small. Feathered dinosaurs and birds appear. Ferns, cycads, and grass are now the most common plants.
  • 145 BCE

    Cretaceous Period: 145-65MYA

    Marsupials, modern sharks, bees and butterflies appear. Flowering plants appear. Period ends with mass extinction of all dinosaurs and many plants.
  • 65 BCE

    Paleogene Period: 65-23MYA

    Rise of mammals and birds. Rodents, primates, pigs, cats, dogs, bears, and whales appear. Flowering plants spread across the globe.
  • Period: 65 BCE to

    Cenozoic Era: 65MYA-present day

  • 23 BCE

    Neogene Period: 23MYA-present day

    First hominids/early humans appear, evovled into modern humans and developed civilization by the end of this period. Mammoths, sabre-toothed cats, and giant camels become extinct approximately 10,000 years before present day.