Ancient bone hand ax identified in China
People may have dug up roots with shovellike tool
![Bone hand ax](https://i0.wp.com/www.sciencenews.org/wp-content/uploads/2015/01/bb_bonetool1.jpg?fit=860%2C460&ssl=1)
JAW DIGGER This 24-centimeter-long hand ax, shown from three angles, is the earliest known bone hand ax from East Asia. Ancient humans used part of a stegadon jaw (left) to make the 170,000-year-old tool.
G. Wei et al/Quaternary International 2015