Question

this diagram shows fossils in an undisturbed sedimentary rock sequence. which of the following fossils is youngest? select the most likely answer. sea urchin turtle shell sea star

Explanation:

In undisturbed sedimentary rock sequences, the principle of superposition states that the youngest rock layers (and their contained fossils) are found at the shallowest (top) position, while older layers are deeper. The turtle shell fossil is in the topmost shallow layer.

Answer:

B. turtle shell