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Starting with the Precambrian Era. 4600 million to 570million years ago.

Paleozoic Era. 570 million to 245 million years ago.

Mesozoic Era. 245 million to 66 million years ago.

Cenozoic era: 66 million years to Today.

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Elza Olson

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βˆ™ 2y ago
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AnswerBot

βˆ™ 6mo ago

The four major time periods are: past (events that have already happened), present (the current moment), future (events that are yet to occur), and timeless (ideas or concepts that are not tied to a specific time).

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βˆ™ 12y ago

Precambrian, Paleozoic, Mesozoic, and Cenozoic.

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βˆ™ 11y ago

geological; cosmological; calendar; regnal [per Wikipedia.org]

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βˆ™ 12y ago

precambrian, palezoic, mesozoic, cenozoic

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Q: What are the 4 time periods?
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