Gt

geologic timeline/koby

By cornekob
  • cambrian 570-500 mya
    570 BCE

    cambrian 570-500 mya

    trilobites dominant, most intence burst of evolution, first fish appeared ,all life was marine life.
  • ordovician 443-488 mya
    443

    ordovician 443-488 mya

    most of earths land came together and formed a super continent known as gondwana, ordovician mass extinction that was about 2x more severe then the one known for wiping all dinousours out, first land plants arrived.