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What do geologists use to mark divisions in geologic time
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What do geologists use to mark divisions in geologic time
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Feb 24, 2018
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What do geologists use to mark divisions in geologic time
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Federico Fissore
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They use sudden change in the fossil record
Tarek Ezzat Abdallah
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Mar 1, 2018
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Tarek Ezzat Abdallah
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