Problem

The diagram below shows fossils in three undisturbed layers of sedimentary rock.
A diagram shows three rock layers. The top layer is labeled shallower. The bottom layer is labeled deeper. The top rock layer contains a fern fossil. The middle layer contains a shell fossil. The bottom layer contains a coral fossil.
A diagram shows three rock layers. The top layer is labeled shallower. The bottom layer is labeled deeper. The top rock layer contains a fern fossil. The middle layer contains a shell fossil. The bottom layer contains a coral fossil.
Which fossil in the diagram is the OLDEST?
Choose 1 answer:
Choose 1 answer:
(Choice A) the fern
A
the fern
(Choice B, Checked) the shell
B
the shell
(Choice C) the coral
C
the coral

Correct! The shell fossil in the middle layer is the OLDEST fossil in the diagram.