How do index fossils help determine age of rock layers?
1 Answer
Dec 3, 2015
index fossils of the same type of organism are nearly the same age
Explanation:
Index fossils are fossils of organisms that lived during only one short period of time. A layer rock with an index fossil in it is close in age to another layer of rock with the same type of index fossil in it. Even though rock layers are of different regions, index fossils indicates that the layers are close in age.
relative age
