
The skull of 'Little Foot', Australopithecus prometheus, from south Africa, now believed to be a contemporary of 'Lucy', Au. Afarensis, from Ethiopia.
Fossils in the ‘Cradle of Humankind’ may be more than a million years older than previously thought - Purdue University News
As I have pointed out many times here and on the social media, as well as in my popular book,
What Makes You So Special: From The Big Bang to You., far from the often repeated creationist lie that there are no transitional fossils, there are actually so many of them that they serve only to cloud, not clarify the picture. Just when you think there is a nice direct line from a species of
Australopithecus up to say,
Homo erectus and thence to us, up pops another
Australopithecus that might be a side branch or it might be an early ancestor of
Homo sapiens. In the end we are left with a confusing collection of ancient African fossils that might or might not be our direct ancestors or might or might not be the ancestors of am extinct side branch, with no real way to determine which.
The picture is confused further when the fossils from which DNA has been extracted show that early hominins had a tendency to spread over a very wide range, evolve for a while in isolation, but not enough to be incapable of interbreeding with a cousin species, then come back together again and exchange DNA by interbreeding, so we may in fact never have had a single original distinct ancestral species but we are the descendants of two or more that hybridized.
Now the picture has been clarified a little by a scientists from Purdue University, West Lafayette, Indiana, USA, the University of the Witwatersrand, Johannesburg, South Africa, and the
University Toulouse Jean Jaurès, Toulouse, France, who have used a new dating method developed by Dr Darryl Granger of Purdue University to reassess the date of several hominin fossils found in the Sterkfontein Caves, South Africa and pushed their dates back more than a million years. This makes them older that 'Lucy' (
Au. afarensis) who is believed to be close to our direct Australopithecine ancestor, if not actually our ancestor. It is hoped, that more accurate dating will leader to a more accurate placing of these fossils over time, so making lineages easier to identify.
From the Purdue University news release: