kaleyymichelleee kaleyymichelleee

15-12-2016
Chemistry

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Why are index fossils used to date other fossils in an area of rock

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Alejandro90 Alejandro90

15-12-2016

Index fossils can be used to help determine the relative age of rock layers. Index fossils are from species that only existed for a short time. Index fossils are found inrock layers. Trilobites and Graptolites are index fossils.

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