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It must have lived for a short geologic period of time.

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Wiki User

11y ago
This answer is:
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Cookiies4U

Lvl 1
1y ago
It was my last question and u were wrong :,(
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Caleb Rider

Lvl 1
5mo ago
it must be distinct from other organisms
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Cookiies4U

Lvl 11
1y ago

It must have lived in a very wide geographic region

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