1. 3-3.4 Infer from Fossils

3. A 1 B 1 2 C 1 2 3 D 1 2 3 E 1 2

4. 1. In which rock layer represented are the oldest fossils found?
Why do you think?
2. In which rock layer represented are the youngest fossils found?
Why do you think?
8. What are some ways the environment changed from Level E to Level A?
3. What can you infer about Fossil 1 in Level C and Fossil 3 in Level D?
7. What inferences can you make about the early environment from the fossils shown?
5. Explain why Fossil 1 in the rock layer represented as Level B is the same age as Fossil 2 in that level.
4. Which fossils are the same age as Fossil 2 in the rock layer represented by Level D?
6. What might be some reasons why there is only one fossil found in the rock layer represented as Level A? A 1 B 1 2 C 1 2 3
1. The oldest fossils are found in Level E because it is the oldest rock layer represented.
2. The youngest fossils are found in Level A because it is the newest rock layer represented.
3. Fossil 1 in Level C is younger than Fossil 3 in Level D because the layer of rock represented in Level D is older than the rock layer represented in Level C.
4. Fossils 1 and 3 in the rock layer represented by Level D is the same age as Fossil 2. All of those fossils are found in the same rock layer.
5. Fossil 1 and Fossil 2 in Level B are the same age because they are both found in the same rock layer. Fossil 2 in Layer C is older than the fossils found in Level B because it is beneath Level B.
6. There is only one fossil found in Level A because it represents the newest or youngest level of rock formed.
7. Inferences students might make include an environment that includes water such as a ocean because of the shells and shark teeth (Levels E, D, C, and B). As time as passed, the environment has changed to include terrestrial organisms such as the tapir (Level A).
8. Inferences students might make include changing from an aquatic-based environment to a more terrestrial-based environment. D 1 2 3 E 1 2