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About 4.54 Billion years ago the big bang created universes and planets including earth!
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The history of life on Earth began about 3.8 billion years ago.
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Extinction of water filtering feeding animals due to drop in sea level
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This was the extinction of animals with spikes as amour and about 4 cm long
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This extinction was the end of the coral period this was almost the end of all life on earth
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About 2.45 billion years ago small bacteria began to create oxygen...
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About 2.1 billion years ago the first eukaryotic cell appered on earth.
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This was the second to last extinction it was the extinction of the clams and shells of the time
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multicellular organisms didnt start appearing until about 600 million years ago.
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Pangaega is a supercontinent that first took shape 270 million years ago.
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Pangea broke apart about 200 million years ago.
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This was the last mass extinction it was the extinction of all the Dinosaurs
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160 thousand years ago the first homo sapien appeared on earth
