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It does 4500.000.000 million years that they forms the Earth
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The first organic molecules formed 400000000 years ago
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The first cells that creates was the prokaryotic cells.
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Before photosynthesis evolved, Earth's atmosphere had no free oxygen. Photosynthetic prokaryotic organisms that produced O2 as a waste product lived long before the first build-up of free oxygen in the atmosphere, perhaps as early as 3.5 billion years ago.
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They appears the first eukaryotic cells.
Exemples: Animals, funghi... -
Multicellullar organisms. Cambrian life's explosion.
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They appears the first vertebrates.
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The first dinosaurs and mammals.
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There was the extinction of dinasaurs.
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The apparition of austrolopitecus.
4 my -
They appears after the austrolopitecus.
