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trilobites dominant, most intence burst of evolution, first fish appeared ,all life was marine life.
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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.
Plan projects on a visual timeline
Map milestones, phases, deadlines, and key events in one place so the sequence is easier to see and share. Timetoast is a timeline maker for work, school, research, and stories.