Chapter 18 The Cambrian Explosion and Beyond
Section 18.1 (All)
1. Know the following types of fossils. Compression, Casts and Molds, Permineralized, and
Unaltered remains.
2. What are some of the strengths and weaknesses of the fossil record?
Section 18.2 (698-700, 701-702)
3.
4.
5.
6.
7.
What are the major differences between Diploblasts and Triploblasts?
What are the major differences between Protostomes and Deutoerostomes?
Know the two major groups make up Protostomes.
What was the Cambrian Explosion?
What caused the Cambrian explosion?
Section 18.3 (702-708)
8. What is adaptive radiation?
9. What is stasis? Be familiar of examples of stasis.
Section 18.4 (709-715)
10. Know the difference between mass extinction and background exctinction.
11. What were the evidences that an asteroid called Chicxulub hit the earth?