Question

A geologist is studying layers of rock. He finds a fossil with an imprint of a shelled animal. According to the law of faunal and floral succession, what kind of fossil would he most likely find next, in the layer of rock above it? Look back to the Fossil Succession Chart for help.
1.a fossil of amphibians
2.a fossil of reptiles
3.a fossil of fishes
4.a fossil of humans

Which is the correct answer?

Answer 1

Here's a hint FSSSHHHH............................... a fossil of fishes.

Answer 2

The layer of rock above it might contain the fossil of a fish as, according to the law of faunal successsion, this was the first animal to evolve after shelled organisms. In sedimentary rock, animals that evolved later could only be found in layers above those from an earlier time.