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Earth's History
Index Fossil
Index fossil definition: A fossil from an organism that existed for a short time, it is used to determine the age of other fossils.
Related Terms
Continental Drift
Geologic Time Scale
Half-life
Law Of Superposition
Plate Tectonics
Radioactive Decay
Relative Age
Relative Dating
Sedimentary Rock
Trace Fossil
Uniformitarianism
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