Learn how a discovery announced in 2015 may help fill a key gap in the record of human evolution, in this video from NOVA: Dawn of Humanity. Fossils of early humans indicate the first recognizable human species, Homo erectus, evolved 3 to 2 million years ago. There were more apelike human ancestors before then, but there is little information about the transition to more humanlike characteristics. For years, there has been a gap in the fossil record of human evolution. However, in 2015, scientists announced the discovery of a trove of fossils in South Africa that may help fill that gap and offer new insight into the evolution of humans.