#FS-240 Tooth of a Horse (Equus ferus caballus), from the Pleistocene - the Ice Age, 10,000-15,000 years old. This was a genus of Equus native to the Americas until an extinction event at the end of the Pleistocene epoch. Approximately 2.5 inches wide, 0.13 pounds in weight. Found in the USA. This is a one-of-a-kind specimen - once sold, it is gone.