(These kinds of things just add more questions to the whole question of origins)

African fossils put new spin on human origins story

By Jonathan AmosScience correspondent, BBC News

Professor Chris Stringer, with the help of a cast of a fossil skull, describes the similarities that this species has with modern humans

The ancient remains of two human-like creatures found in South Africa could change the way we view our origins.

The 1.9-million-year-old fossils were first described in 2010, and given the species nameAustralopithecus sediba.

But the team behind the discovery has now come back with a deeper analysis.

It tells Science magazine that features seen in the brain, feet, hands and pelvis of A. sediba all suggest this species was on the direct evolutionary line to us – Homo sapiens.

“We have examined the critical areas of anatomy that have been used consistently for identifying the uniqueness of human beings,” said Professor Lee Berger from the University of the Witwatersrand in Johannesburg

“Any one of these features could have evolved separately, but it is highly unlikely that all of them would have evolved together if A. sediba was not related to our lineage,” the team leader informed BBC News.

The female’s right hand is missing only a few bones

It is a big claim and, if correct, would sideline other candidates in the fossil record for which similar assertions have been made in the past.

Theory holds that modern humans can trace a line back to a creature known as Homo erectus which lived more than a million years ago. This animal, according to many palaeoanthropologists, may in turn have had its origins in more primitive hominins, as they are known, such asHomo habilis or Homo rudolfensis.

The contention now made for A. sediba is that, although older than its “rivals”, some of its anatomy and capabilities were more advanced than these younger forms. Put simply, it is a more credible ancestor for H. erectus, Berger’s team claims.

The sediba specimens were unearthed at Malapa in the famous Cradle of Humankind World Heritage Site, just to the northwest of Jo’burg.

to read more, go to:    http://www.bbc.co.uk/news/science-environment-14824435