Geological time

By Lucia Socas
  • Period: 541 BCE to 485 BCE

    Cambrian

  • Period: 541 BCE to 252 BCE

    Palaeozoic (ERA)

    In this Era the Pangea was formed, a great number of living things appeared and then became extinct quickly and evolution and development of amphibians, reptiles, fish, arthropodos and plants happened
  • 530 BCE

    Cambrian explosion

    Cambrian explosion
    It was the sudden emergence of diversification of macroscopic multicellular organisms
  • Period: 485 BCE to 444 BCE

    Ordovician

  • 483 BCE

    Invertebrate diversification

    Invertebrate diversification
    The first invertebrate appears
  • Period: 444 BCE to 419 BCE

    Silurian

  • 442 BCE

    Appearance of more animals and plants

    Appearance of more animals and plants
    Vascular plants, fish, trilobite, mollusk diversification
  • Period: 419 BCE to 359 BCE

    Devonian

  • 417 BCE

    New animals and plants

    New animals and plants
    New plants; wingless insects; trilobites decline,early sharks
  • Period: 359 BCE to 299 BCE

    Carboniferous

  • 356 BCE

    Appereance of the first extensive forest

    Appereance of the first extensive forest
    The growth of these forests removed huge amounts of carbon dioxide from the atmosphere, leading to a surplus of oxygen
  • Period: 299 BCE to 252 BCE

    Permian

  • 290 BCE

    The Pangea was formed

    The Pangea was formed
  • Period: 252 BCE to 66 BCE

    Mesozoic (ERA)

    In this Era dinosaurs appear, diversified and then became extinct. The fauna changed, the teectonic plates moved to present location, The climate was very dry
  • Period: 252 BCE to 201 BCE

    Triassic

  • 248 BCE

    First mammals

    First mammals
    The first rodent like mammals appear
  • Period: 201 BCE to 145 BCE

    Jurassic

  • 198 BCE

    Dinosaurs dominate

    Dinosaurs dominate
    Fist birds and lizards. Pangea breaks into Gondwana and Laurasia
  • Period: 145 BCE to 66 BCE

    Cretaceous

  • 140 BCE

    The Pangea breaks and new animals and plants appear. The exticion of the dinosaurs

    The Pangea breaks and new animals and plants appear. The exticion of the dinosaurs
    Pangea break up into recognizable modern continets, flowering plants; T-rex; modern sharks. The extinction of the dinosaurs is caused by a great meteorite
  • Period: 66 BCE to 50

    Cenozoic (ERA)

    In this mammals and flowering plants replaced reptiles and gymnosperms as he dominant life forms, Mammals colonised land and water, and birds did it with the air. Humans are thought to have appeared around 3.5 mllion years ago.
  • Period: 66 BCE to 2 BCE

    Tertiary

  • 60 BCE

    Pangea breaks entirely

    Pangea breaks entirely
    The Pangea breaks into present position. Also the mammals diversified quicky
  • Period: 2 BCE to 50

    Quaternary

  • 5

    Our time

    Our time