Geological Time Line - http://www.bobainsworth.com/fossil/timeline.htm A simple chart provides links to further details of each era, and an interactive feature allows users to see global shifts and milestones.
Comprehending Geological Time - http://www.athro.com/geo/hgfr1.html An interactive tool to calculate time periods and human history in terms of different measurement scales such as a meter, a day or a million years.
Web Geological Time Machine - http://www.ucmp.berkeley.edu/help/timeform.html A simple table of the different time periods contains links to details of the rocks, fossils and locations of each one.
Life Through Geologic Time - http://www.carlwozniak.com/earth/Life.html A pictorial history of life on Earth, with events and fossils linked from the relevant period or epoch.
Fugue No. 16: G Minor - http://jan.ucc.nau.edu/~tas3/wtc/ii16.html Listen to the music piece while reading about how the geology and ecosystems of Grand Canyon, AZ are like a Bach fugue.
Dr. Bob's Geologic Time Page - http://www.ux1.eiu.edu/~rbjorstad/geoltime.html Basic information about the geologic time scale and mnemonics to help remember the various periods and epochs.
Earth Floor: Geologic Time - http://www.cotf.edu/ete/modules/msese/earthsysflr/geotime.html Explains how the age of the earth is divided up into periods of time, and provides simple definitions and illustrations of the different names.
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