http://www.richter-fossilien-reisen.de/jura.html
http://www.rotondarock.com/Echinoids.html
http://home.austin.rr.com/fossils/echinodermpage.html
http://www.fossilcrinoid.com/echin.html
http://www.geofossil.com/fossils/seaurching.htm
http://www.geocities.com/fossilstore/ec.html
http://www.fossilmall.com/index.htm
