Hand Fossil Turns Back Clock on Complex Tool Use

A 1.4-million-year-old hand-bone fossil means the modern human ability to make and use complex tools may have originated far earlier than scientists previously thought.

December 16, 2013
4:30 PM EST
Researchers have discovered a 1.42-million-year-old hand fossil that possesses the styloid process, a vital anatomical feature that allows the hand to lock into the wrist bones, giving humans the ability to make and use complex tools. | University of Missouri