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Geologic Time, Online Edition by William L. NewmanThis USGS online publication provides a thorough introduction to relative verses, absolute dating and the developmental history of the geologic time scale.
Fossils, Rocks and Time, Lucy E. Edwards and John Pojeta, Jr.In this USGS online publication, learn the important role that fossils play in shaping the geologic time scale.
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Last Updated: August 23, 2010 at 12:30 MST