image: An example of a human precision grip, grasping an Australopithecus africanus first metacarpal (StW 418) of the thumb (3-2 million years old). This material relates to a paper that appeared in the Jan. 23, 2015, issue of Science, published by AAAS. The paper, by M.M. Skinner at University of Kent in Canterbury, UK, and colleagues was titled, "Human-like hand use in Australopithecus africanus." view more
Credit: [Credit: T.L. Kivell & M. Skinner]