4.5" Polished Slab Petoskey Stone Hexagonaria Coral Fossil Devonian Age Michigan Spine The isotopic signatures embedded in

The isotopic signatures embedded in this specimen expose whether these colossal birds foraged on grasses

including forests and river overbank deposits

Diet: Uncertain but possibly an omnivore

and mammals—including the earliest pantolestid

offering a fascinating glimpse into prehistoric North American ecosystems

4.5" Polished Slab Petoskey Stone Hexagonaria Coral Fossil Devonian Age Michigan Spine The isotopic signatures embedded inLocation: 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.