Our true dawn.

The article discusses research into the earliest appearance of the human lineage as it diverged from its primate ancestors. Estimates of human origins from fossil and DNA analysis have not always correlated. Geneticists postulated the timing of the human-chimpanzee evolutionary split at 4 and 6 million years ago by calculating the molecular clock of genetic mutations of orang-utans, while paleontologists argue that Australopithecus afarensis hominids can be dated to 3.85 million years ago. Analysis of mutation rates of modern humans produced a molecular clock which indicates that the split occurred 7 to 13 million years ago. Also noted is the discovery of fossil remains from potential early human ancestors Ardipithecus ramidus, Sahelanthropus tchadensis, and Orrorin tugenensis.