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Duotone panel — violet briefing on the left, lime-sealed detail sheet on the right.
vertically oriented shells
Their growth reflects a long history of adaptation to changing environments
These regions typically feature geological formations conducive to the oxidation of copper ores
originates primarily along Bohemia's Vltava River valley
This fascinating detail makes this fossil vertebra a captivating addition for any enthusiast
4.2" Polished Slab Petoskey Stone Hexagonaria Coral Fossil Devonian Age Michigan Rebbachisaurus Tooth vertically oriented shellsLocation: Michigan, United States Weight: 2. 4 Ounces Dimensions: 4. 2 Inches Long, 1. 7 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 and fossils, specifically fossilized rugose coral known as Hexagonaria percarinata. Typically pebble shaped, these stones are found primarily in the northwestern and northeastern regions of Michigan's Lower Peninsula.