If it were mine I would approach it in the manner outlined in this old post. Oreodont Prep Series - Fossil Preparation - The Fossil Forum Now, that choice is mostly because of the tools I have available and it's the approach with which I have experience. Pro Level preppers, like jpc, could do a masterful job much quicker with air-driven tools. However an electric engraver, carbide needles in a pin vise, and patience can give a very nice result. You didn't say if it is White River Formation