How do index fossils help scientists?

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asked Aug 7, 2022 23.7k views

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Peter Maydell · Answer 1 · 2022-08-13T14:23:14+0000

Fossils are used to determine the ages of rock layers. ... Index fossils are of organisms that lived over a wide area. They lived for a fairly short period of time. An index fossil allows a scientist to determine the age of the rock it is in.

How do index fossils help scientists?

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