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Fossils by Geologic Interval
whatUseek Collection Sites
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whatUseek Directory Site Listings:
Berkeley Geochronology Center
- Non-profit scientific research institution dedicated to establishing the history of the Earth, its various inhabitants, and its interactions with the rest of our Solar System, throughout the 4.6 billion years of our Planet's existence.
- a synoptic time table.
- USGS on-line publication about the relative and radiometric geologic time scales, age of the earth, index fossils, and related topics.
- Lecture notes on different methods of measuring geologic time.
Institute for Precambrian Geology and Geochronology
- Russian institute for the study of the Precambrian, with English sections.
Web Geological Time Machine
- a great, sprawling geological and paleontological journey from the birth of the planet to today.
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