Fossil age dating

However, by itself a fossil has little meaning unless it is placed within some context.

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Index fossils are fossils from common, easily identifiable species that lived in wide ranges during restricted time periods.

Generally, deeper rocks and fossils are older than those found above them.

* Observations of the fluctuations of the Earth's magnetic field, which leaves different magnetic fields in rocks from different geological eras.

Here is some information from a good web site: Paleontologists use many ways of dating individual fossils in geologic time.

Paleontologists can estimate the amount of time that has passed since the stratum containing the fossil was formed.

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