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Proterozoic Eon

The Proterozoic is an eon that began 2.5 billion years ago and ended 542 million years ago. Paleoproterozoic Mesoproterozoic Neoproterozoic

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Proterozoic Eon | Geology, Prehistoric world, Nature center

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prehistoric.wikia.com

The Proterozoic is an eon that began 2.5 billion years ago and ended 542 million years ago. Paleoproterozoic Mesoproterozoic Neoproterozoic

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