Index Fossils

An organism that no longer exists on Earth is called

Which rock layer contains the newest fossils? Options: F, E, B, C

According to the law of superposition, where are the oldest fossils found?

The best index fossils have which two traits?

Index fossils help determine relative age through correlating rock layers.

One of the oldest organisms discovered is called a(n) _________.

The Law of Superposition helps scientists to determine what?

According to the law of superposition, which layer is the youngest? Options: A, B, C

Which rock layer in the diagram seems to be the oldest? Options: F, E, B, A

Which rock layer most likely contains fossils of the most recently evolved organisms? Options: 1, 2, 3, 4