XICALI ilovepdf_merged | Page 53

They say that these told that were found identified three types of bone retouchers, known as soft hammers, that were used to modify stone tools. The first type was weathered limb bone fragments, mainly from the species of any member of the deer family, marginally shaped by retouching and intensively used on a single area. The second type was long limb bone flakes resulting from the dismemberment of large mammals, used for quick retouching or resharpening of stone tools. And the third type was a single specimen of an horn of an deer that, close to its tip, shows impact scars produced by percussing various animals The tools or artifacts represent that they used to use bones as raw material to modify stone tools. The researchers have not yet determined which species the users of these prehistoric tools belonged to, although they do know that they lived during the same period as theHomo sapiens. They have found these tools at an East Asian sidem that means that their discovery gives China an opportunity to be compared with the artifacts on a global scale. 51