Index fossils are the remains of species that were once abundant and

asked Oct 5, 2018 105k views

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2 votes

Index fossils are used to be able to see that a certain layer of soil was from some time ago. Hope this helps comrade.

Nuno Ferro answered Oct 7, 2018

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3 votes

Geographically Widespread

Levar answered Oct 10, 2018

by Levar

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