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a calcium carbonate mineral
gravel pits
and comparable marine fauna
The central 230-square-mile fossil bed is especially rich
Aragonite was once the more prevalent form in Earth’s history
0.9" Running Rhino Hyracodon Nebrascensis Fossil Tooth South Dakota Badlands COA Pyrite a calcium carbonate mineralLocation: South Dakota, White River Formation, Pennington County Weight: 0. 3 Ounces Dimensions: 0. 9 Inches Long, 0. 6 Inches Wide, 0. 5 Inches Thick Comes with a Certificate of Authenticity. Comes with a Stand and Mineral Tack. The item pictured is the one you will receive. 30 35 Million Years Old Oligocene Period The discovery of Rhinoceros fossils in the Badlands of the American West was very exciting, as most people never suspected that such
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