Question

How do index fossils assist in dating other fossils?

Answer 1

Answer:

The answer is not rock and not fossil

Explanation:

Answer 2

Certain fossils, called index fossils, help geologists match rock layers. To be useful as an index fossil, a fossil must be widely distributed and represent a type of organism that existed for a brief time period. Index fossils are useful because they tell the relative ages of the rock layers in which they occur.