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Archean eon
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Proterozoic eon
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Proterozoic eon
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Proterozoic eon
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Proterozoic eon
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Earth chances from an anoxygenic environment to an oxygenic environment
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Proterozoic eon
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Proterozoic eon
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Proterozoic eon
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Phanerozoic eon, paleozoic era, cambrian period
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Phanerozoic eon, paleozoic era, cambrian period
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Ordovician period
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Ordovician period
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Carboniferous period
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Carboniferous period
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Carboniferous period
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Mesozoic era, triassic period
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Mesozoic era, triassic period
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Jurassic period
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Jurassic period
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Cenozoic era, tertiary period, paleocene epoch
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Cenozoic era, tertiary period, paleocene epoch
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Cenozoic era, tertiary period, paleocene epoch
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Cenozoic era, tertiary period, paleocene epoch
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Cenozoic era, tertiary period, paleocene epoch
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Cenozoic era, tertiary period, paleocene epoch
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Eocene epoch
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Pilocene epoch
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Quaternary period, pleistocene epoch