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What is the most significant difference between Precambrian and Paleozoic life-forms?
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Jan 22, 2018
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What is the most significant difference between Precambrian and Paleozoic life-forms?
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The Pre-Cambrian/Paleozoic boundary is classically the point where the fossilized shells of animals suddenly appeared in the stratigraphic record
Hope this helps
Aleh Zasypkin
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Jan 26, 2018
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