Fossil Jaw Turns Back Clock on Human Evolution by SciFri published on 2015-03-06T22:39:13Z More at scifri.me/2j42ux The fossil record linking Australopithecus specimens like Lucy to Homo, the genus to which humans belong, is spotty. But a newly discovered fossil jaw provides a glimpse at that little-known time period between two and three million years ago, and pushes the date of Homo's appearance to 2.8 million years ago—400,000 years earlier than previous estimates. Brian Villmoare and colleagues describe the fossil in Science Express. Genre Science
