You find some limestone rock in southern Indiana and notice that it has fossil trilobites in it. Later you find the same fossil trilobites in a limestone in Colorado. From this you determine that the two rock types were deposited during the same time period using what concept or principle?
A. principle of Unconformities
B. principle of Cross-cutting Relationships
C. principle of Uniformitarianism
D. principle of Inclusions
E. principle of Correlation using fossils
Answer: E
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