Most shellers at one time or the other have picked up shark teeth. Last year I was at a fossil show in Illinois and found a shark tooth book by Gerard Case,in it was a flyer of teeth for sale from 1967. Carcharodon megalodon $5.00 Carcharocles meg. Carcharodon angustidens $5.00 " ang Isurus hastalis $1.00 Mako Notorhynchus primigenius $2.00 Cow shark Hemipristis serra $0.50 Snaggletooth shark Carcharias taurus $0.50 Sand tiger Shark vertebral discs $0.50 This must have been in the good old days. wolfman