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Petoskey stones appear as unremarkable limestone
These fossil remains illuminate the evolutionary trajectory and ecological positioning of this archosaur lineage
prized for its high purity
Early Goniatites display a "Goniatitic" zigzag pattern of smooth lobes and saddles
Dimension: 0
3.9" Brontothere Fossil Knee Bone Eocene Age Badlands S Dakota Titanothere COA Zlichovaspis Petoskey stones appear as unremarkableLocation: White River Badlands, South Dakota Weight: 11. 6 Ounces Dimensions: 3. 9 Inches Long, 2. 5 Inches Wide, 2. 2 Inches Thick (Matrix) Eocene Age, 56 to 33. 9 million years Old. Comes with a Certificate of Authenticity. The item pictured is the one you will receive. Brontothere is an ancient mammal that roamed the area of Badlands National Park about 56 33. 9 million years ago. Badlands brontotheres are also known as Megacerops coloradensis in
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