Use fossil evidence to describe an environment from the past 0507.5.4

Links verified 9/18/2014

1. Age of Fossils - [This expired link is available through the Wayback Machine Internet Archive. If the page doesn't load quickly click on Impatient? at the bottom right of the page.]
2. The Clock Of Eras - a graphic aid to help visualize geologic time
3. Determining Age of Rocks and Fossils - from UCMP Berkeley
4. Fossils, Rocks, and Time - from USGS
5. Fossils Through Time - choose a time period to see what life was like
6. Geology of the Grand Canyon - The ultimate display of rock layers
7. Prehistoric Life - determining the age of rocks and fossils [This expired link is available through the Wayback Machine Internet Archive. If the page doesn't load quickly click on Impatient? at the bottom right of the page.]
8. Principal of Uniformitarianism - states that the processes affecting Earth today are the same ones that affected it in the past.
9. Principle of Superposition - in a sequence of undisturbed sedimentary layers or lava flows, the oldest layers are at the bottom. (includes an animation)
10. Relative Age - determining relative age from the rock record
11. Relative Dating - stratigraphy and the principles of relative dating
12. Relative Time Scale - from USGS
13. Who's On First? - a relative dating activity

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