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Physical Environment > Earth 550 my ago |
Earth Earlier Earlier 550 Million Years ago Later Earth After |
This site tells the story of the history of the universe. Click Earlier and Later to follow the story. Note: Many facts have been simplified to make them easier to understand. |
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550 million years ago North America was drifting away from South America. The main groups of animals had appeared: worms, molluscs and arthropods. Jump to
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Earth Earlier Earlier 550 Million Years ago Later Earth After |
Physical Environment > Earth 550 my ago |
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