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Apr 29, 2013, 10:40:05 PM4/29/13

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What are the periods of the paleozoic, mesozoic, and cenozoic eras?

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Apr 29, 2013, 11:20:48 PM4/29/13

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Paleozoic- cambrian, ordivician, silurian, devonian, carboniferous, permian

Mesozoic- Triassic, jurrasic, crataceous

Cenozoic-Paleogene, neogene

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