• http://kids.earth.nasa.gov/archive/pangaea/
• http://pubs.usgs.gov/gip/dynamic/historical.html
• http://volcano.und.edu/vwdocs/vwlessons/plate_tectonics/i...
• http://www.pbs.org/wgbh/aso/tryit/tectonics/
• http://www.ucmp.berkeley.edu/geology/anim1.html