Question

this diagram shows fossils in an undisturbed sedimentary rock sequence. which of the following fossils is oldest? select the most likely answer. crab claw shark tooth clam

Explanation:

In undisturbed sedimentary rock, the principle of superposition states that deeper rock layers (and the fossils within them) are older than shallower layers. The shark tooth fossil is in the deepest layer shown.

Answer:

B. shark tooth