Question

1)Suppose you find a rock with a goniatite fossil and another rock with an ammonite fossil? Which rock is older? How do you know?

2)Which organism would make the best index fossil? Why?

3)If you find a rock that has both a nautilus and a goniatite fossil, about hold is the rock? How do you know?

4)f you find a rock that has a belemnite fossil in it, how old is the rock?

Answer 1

Answer:

Explanation:

Goniatite: 390-400million years old

Ammonite: 65-66 million years old

Since ammonites are usually food to the tylosaurus, (existed 66 million years ago) you could estimate ammonites are 65-66 million years old.

And for goniatites, all I know is that it’s from the Devonian period

Answer 2

Answer:

The Ammonite would be best for a fossil index because it is the youngest and the most common to find, therefore will be easier to explore and examine the timeline/life of the once live fossil.

Explanation: