4.7" Brontothere Fossil Vertebrae Bone Eocene Age Badlands S Dakota Titanothere COA

Location: White River Badlands, South Dakota Weight: 1 Pound 9.3 Ounces Dimensions: 4.7 Inches Long, 2.9 Inches Wide, 2.8 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 scientific literature. Sometimes called “titanothere,” its name means “thunder beast,” referring to how a traveling herd of massive brontotheres may have sounded long ago, thundering through ancient environments. Brontotheres found in the Badlands would have measured around 8 feet tall and 16 feet long, the size of a large rhino or small elephant today, but brontotheres began as only dog-sized animals in the early Eocene epoch. Over the next 20 million years of the Eocene, brontotheres became larger as they evolved and diversified. By the