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svetoff [14.1K]
2 years ago
12

How do index fossils help scientists?

Biology
1 answer:
vovikov84 [41]2 years ago
4 0

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.

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