What is one example of index fossil

Question

Biology

Alec Herrera

30 November, 11:01

What is one example of index fossil

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Answers (2)

Know the Answer?

Nina Greene · Answer 1

Answer: below

Explanation:

Examples of index fossils include: Ammonites were common during the Mesozoic Era (245 to 65 mya), They were not found after the Cretaceous period, as they went extinct during the K-T extinction (65 mya).

index fossil: The trilobite is in all three outcrops (it is widespread) and in only one layer per outcrop (it is short lived.)

Triston Wiley · Answer 2

Ammonites were common during the Mesozoic Era (245 to 65 mya), They were not found after the Cretaceous period, as they went extinct during the K-T extinction (65 mya).