First of Our Kind: Could Australopithecus sediba Be Our Long Lost Ancestor?

I came across this article reading a magazine, so you cannot read the entire article online but I thought it was interesting enough to post on here.  Scientists have discovered remains of what are thought to be ancestors in the Homo genus in South Africa.  The remains are said to form a "link" between Lucy and more current traits of Homo genus.  I have included a link to the original article I found and also a news report on the Australopithecus Sebida remains they found.

http://www.scientificamerican.com/article.cfm?id=first-of-our-kind 

http://io9.com/5894866/why-australopithecus-sediba-could-rewrite-our-evolutionary-history