The USGS Visitors Center at the National Center in Reston, Virginia
The "age of dinosaurs" (the Mesozoic Era) included three consecutive geologic time periods (the Triassic, Jurassic, and Cretaceous Periods).
To learn more about geologic time, go to one of these online publications:
Fossils, Rocks, and Time
To learn more about dinosaurs, go to Dinosaurs: Facts and Fiction.
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Page Last Modified: Friday, October 02, 2009