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law of faunal succession
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Diagram comparing two columns of rock layers, labeled A and B, each containing distinct fossil illustrations at various depths. The matching fossils in corresponding layers show how geologists use fossils to determine the relative ages of rock layers, even when the sections are separated by 200 miles. A detailed geologic time scale chart displaying Earth's history from the Hadean Eon over 4.5 billion years ago to the present, organized by eons, eras, periods, epochs, and ages with color-coded columns and corresponding dates in millions of years.

law of faunal succession: References & Edit History

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Article History

Type Description Contributor Date
Invalidated site: United States Geological Survey - Fossil Succession. Jan 21, 2020
Added diagrams of faunal succession in rock and of the geologic time scale. Oct 24, 2019
Article revised and updated. Oct 24, 2019
Add new Web site: The University of Vermont - The Principles of Faunal Succession. Dec 29, 2011
Add new Web site: United States Geological Survey - Fossil Succession. Dec 29, 2011
Article added to new online database. Jul 20, 1998
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