4.5" Polished Slab Petoskey Stone Hexagonaria Coral Fossil Devonian Age Michigan Metasequoia Their protective shells resembled those

Their protective shells resembled those of turtles but were composed of plates similar to an armadillo’s covering

unmelted state

though their tough-to-reach spots have kept most curious outsiders away

taking on various shapes and forming in diverse geological settings

4.5" Polished Slab Petoskey Stone Hexagonaria Coral Fossil Devonian Age Michigan Metasequoia Their protective shells resembled thoseLocation: Michigan, United States Weight: 2. 9 Ounces Dimensions: 4. 5 Inches Long, 1. 9 Inches Wide, 0. 3 Inches Thick The item pictured is the one you will receive. Devonian Age, 350 million years old Petoskey Stones are unique rocks that are also fossils, specifically the fossilized rugose coral Hexagonaria percarinata. Typically pebble shaped, these stones are found mainly in the northwestern and northeastern regions of Michigan's Lower Peninsula.