Place fossil's number 2, 3, 5, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 18, 19, 20, 21 on the chart below. Use the information to answer the questions.
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Name |
Cam |
Ord |
Sil |
Dev |
Mis |
Penn |
Per |
Tri |
Jur |
Cre |
Ter |
Quat |
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QUESTIONS:
1. List by number six fossils that would be found in cretaceous rocks.
2. List by number three fossils that would be found in Silurian Rocks.
3. Could fossils of trilobites and pelecypods be found in the same rock? Why or Why not?
4. Could fossils of Gastopods and Mammals be found in the same rock? Why or Why not?
5. Identify the age of a rock that contains fossils # 3, 5, 7, 8, 9, 10
6. Identify the age of a rock that contains fossils # 11, 14, 15, 21.
7. Could fossils of Cephalopods and Echinoids be found the in same rock layer?
8. How do fossils help us determine the age of a rock layer?
9. Define index fossil. (pg 290)
10. List three characteristics that a good index fossil would have. (pg 290)