Answer: FOSSIL OF FISHES.
Explanation: The law of faunal succession, is based on the observation that sedimentary rock strata contain fossilized flora and fauna. These fossils succeed each other vertically in a specific, reliable order that can be identified over wide horizontal distances. According to this law, the order for animals is as follows; animals with shells; fishes; amphibians; reptiles; mammals; birds; humans.
It shows where in the world the area of a map is.
<span>I hope this helps!! :)</span>
How old the rock is
thats my answer
