Brontotherium (Titanotherium ingen) Jaw Section - 9.25 inches

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These large teeth belonged to a Brontotherium, a large hoofed mammal related to horses and rhinos. Brontotherium roamed that scrubby woodlands of South Dakota and Nebraska in large herds during the Oligocene. They were huge mammals standing over 8 feet tall at the shoulders, larger than any present day rhino. 

Species: Titanotherium ingen

Age: 30 - 35 Million Years Old

Location: Chadron Formation, Pennington County, South Dakota.

Size: Length 9.25 inches or 23 cm width 6.75 inches or 17.2 cm, height 4.5 inches or 12 cm. 

Weight: 3176 g / 7 lb.