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They have existed for millions of years
Periodic volcanic eruptions rapidly buried fallen trees beneath layers of ash and lava
The skeletal and dental adaptations of Hadrosaurus closely resemble those of contemporaries like Kritosaurus and later hadrosaurids such as Edmontosaurus
and various metallic phases
adding to its fascinating natural history
3.8" Brontothere Fossil Vertebrae Bone Eocene Age Badlands S Dakota Titanothere COA Tourmaline They have existed for millionsLocation: White River Badlands, South Dakota Weight: 11. 1 Ounces Dimensions: 3. 8 Inches Long, 2. 2 Inches Wide, 2. 1 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