Wildthing said at 3:24 p.m. on Jul 10, 2009: wonderful to see these. I believe that sharks' skeletons are made of cartilage, not bone, and so only the teeth survive. I used to wear one of these round my neck on a chain.
Eduardo.affonso said at 3:38 p.m. on Jul 10, 2009: Very interesting. I particularly like that silver round tooth... :-P