hipparion การใช้

Tertiary vertebrates of Washington included the horse " Hipparion ", bison, camels, caribou, oreodonts, and many different kinds of rodent.
Existence of stone tools is also evidenced by bones of large mammals such as alcelaphinae ( Wildebeest related bovids ) and Hipparion, an extinct genus of three-toed horse that show butchery cut marks by hominins including those made in removing an animal s tongue . " These are the earliest documented percussion marks made by hominids [ hominins ], who were presumably processing these bones for contained fatty marrow "; and, " These are the earliest documented cut marks made by hominids [ hominins ] . " As concluded by the excavators, the evidence from the site shows " . . a major function of the earliest known tools was meat and marrow processing of large carcasses . " This pattern of butchery processing of large prey was maintained by hominins well into the Pliocene.