Interesting and sometimes Bizarre Links:

http://www.ucmp.berkeley.edu/help/timeform.html    Very good timescale with descriptions

http://www.enchantedlearning.com/subjects/Geologictime.html    Cutesy timescale

http://oldsci.eiu.edu/geology/jorstad/geoltime.html    Mnemonic devices for learning the time scale

http://www.geobop.com/paleozoo/Time/    Colorful display

http://www.vendian.org/mncharity/dir3/geologic_time_galactic/    timescale based on galactic orbits (250 my = 1 galactic orbit)

http://www.aqd.nps.gov/grd/usgsnps/gtime/gtime2.html    Scaled time scales

http://pseudonumerology.com/6.htm    Memorizing the numbers of the Geologic Time Scale - a little involved

http://www.sdnhm.org/fieldguide/fossils/timeline.html    Textual description of life and geologic development for the periods.

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