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Template:Nature timeline/sandbox3

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< Template:Nature timeline

Nature timeline

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Dark Ages

Reionization

Matter-dominated
era

Accelerated expansion

Water

Single-celled life

Photosynthesis

Multicellular
life

Vertebrates

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Earliest Universe

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Earliest galaxy

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Earliest quasar/sbh

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Andromeda Galaxy

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Milky Way spirals

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Earth/Solar System

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Earliest oxygen

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Atmospheric oxygen

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Sexual reproduction

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Earliest animals / plants

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Cambrian explosion

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Earliest mammals

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(billion years ago)

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