Magic Forums

I was wondering if anyone here knows of any magical uses for fossils. Aside from the idea of making a wand with a ring of fossil shark teeth surrounding a quartz crystal or spinosaurus tooth tip and a crinoid stem in the handle, I'm really drawing a blank. A shame because as a collector I occasionally find myself with extra specimens that have little display value and I'd like them to do more than collect dust. Any input would be gladly appreciated, not just for practical magic use mind you, but to add to my knowledge of fossis in general.