-
570 BCE
cambrian 570-500 mya
trilobites dominant, most intence burst of evolution, first fish appeared ,all life was marine life. -
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.
