4.4" Polished Slab Petoskey Stone Hexagonaria Coral Fossil Devonian Age Michigan Rebbachisaurus Tooth Known for its unique crystalline

Known for its unique crystalline structure formed through volcanic hydrothermal alteration

along with the thin radial lines extending from the dark central “eye”

The genus belongs to the phylum Brachiopoda

brontotheres are only distantly related to today’s rhinoceroses

4.4" Polished Slab Petoskey Stone Hexagonaria Coral Fossil Devonian Age Michigan Rebbachisaurus Tooth Known for its unique crystallineLocation: Michigan, United States Weight: 3. 8 Ounces Dimensions: 4. 4 Inches Long, 3. 8 Inches Wide, 0. 2 Inches Thick The item pictured is the one you will receive. Devonian Age, 350 million years old Petoskey Stones are unique rocks that also serve as fossils, specifically of the rugose coral Hexagonaria percarinata. Typically pebble shaped, these stones are found primarily in the northwestern and northeastern regions of Michigans Lower Peninsula.