Miocene Shark Tooth

Glossy and dark as steeped tea, this single fossil tooth has kept every serration along its edge despite the millions of years it spent underground. It sits cool in the palm and heavier than a tooth has any right to be — the original enamel long since swapped, atom by atom, for stone. The root is intact, the point unchipped, the color a mottled brown-black that mineral collectors call 'root beer.' Medieval Europe had no name for fossils and so invented one: glossopetrae, tongue stones, believed to have fallen from the sky or dropped from the mouths of serpents turned to rock. Physicians of the period had them set into rings and pendants, said to sweat or change color in the presence of poison — a small stone bodyguard, carried at the table as much as anywhere else. This example dates to the Miocene, likely ten to twenty million years old, recovered from the phosphate-rich beds where Morocco's ancient seabed has given up shark teeth by the millions. The serration pattern and root shape point to one of the extinct mako lineages — smaller and older than the famous megalodon, but no less patient in the getting. Small enough for a pocket, sturdy enough for a child's hand, and honest about what it is: proof that something with teeth once swam where there is now only dust. A first fossil, or a returning one.