Stuff from the beach, could be any age. The tooth could even be human? (maybe two watermen had a gentlemanly disagreement?) The tooth has no root and is roughly cuboidal. (penny diameter is 0.75 inches= 19 mm). The pyramidal "bone" has an 'enamel' surface on two sides, bone-looking third, and the most interesting side has a hole with three holes/channels in this hole (wouldn't photograph well with scanner). Initially thought the small piece with enameled holes was shell but doesn't look or feel right (maybe coral, anemone, sponge-- have no real idea). Any help with these three would be appreciated.