Navigation Links
Human fossil discovery -- evidence of new Homo species
Date:4/9/2010

Two partial skeletons have been discovered in the cave deposits in the Cradle of Humankind World Heritage Site near Johannesburg, in the Republic of South Africa by members of the University of the Witwatersrand, Johannesburg.

The human fossils, close to 2 million years old, have been classified as a new species: Australopithecus sediba. Australopithecus means "southern ape" and Sediba, taken from the local South African language seSotho means "natural spring, fountain or wellspring".

The findings represent some of the most significant scientific discoveries of recent years and were published today in the scientific journal Science.

Dr Robyn Pickering of the School of Earth Sciences at the University of Melbourne who was one a team of international and Australian scientists to accurately date the sediments surrounding the fossils says, "We are now able to fill in the gap of what happened 2 million years ago in the beginnings of our species."

"It has never been clear where our own genus Homo came from this new discovery, Australopithecus sediba could answer these questions," she says.

Researchers say this species appears to be a transitional form, maybe the best yet found, between early australopithecines and early members of the genus Homo, thereby replacing other candidates such as Homo habilis (the tool making 'handy' man from east Africa) as the distant ancestor of Homo sapien.

The Sediba fossils are exceptionally well preserved, and therefore provide a unique insight in the period when the earliest members of our genus evolved.

Sediments from surrounding and supporting the fossils were analysed by several research teams.

Using a state-of-the-art uranium lead dating technique, conducted independently and in parallel by Dr Pickering at the University of Melbourne and her former PhD supervisor Professor Jan Kramers from the University of Bern in Switzerland, they produced an identical age result confirming the sediment was close to 2 million years old.

"Together with palaeomagnetic dating of the sediments more closely surrounding the fossils by Andy Herries of UNSW and our team of colleagues led by Professor Paul Dirks from the University of Townsville, we were collectively able to provide an age of 1.95-1.78 million years for the fossils," Dr Pickering says.

"This is the first time, in relation to these renowned caves in South Africa, that we have been able to achieve such high-quality age control."

"Knowing how old these early human (hominin) fossils are, is critical to our knowledge of where this newly found species fits into our family tree," she says.

Associate Professor Jon Woodhead, who heads the Isotope Geosciences laboratory in the School of Earth Sciences at the University of Melbourne, noted "This is a highly significant find and I congratulate Robyn and her colleagues on their discovery."

"Only very recently have we been able to develop the technologies required to allow precise dating of cave sediments such as those found in intimate association with these new fossils."

"This really is the beginning of a 'new era' as such methods have much to contribute to studies of global climate change, biodiversity and, in this case, human evolution."

"The University of Melbourne is a world leader in this area and we are proud to have been able to contribute to this important discovery."


'/>"/>

Contact: Rebecca Scott
rebeccas@unimelb.edu.au
61-383-440-181
University of Melbourne
Source:Eurekalert

Related biology news :

1. Scientists uncover new species of human ancestor
2. Pitt-led international study identifies human enzyme that breaks down potentially toxic nanomaterials, opens door to novel drug delivery
3. Pitt-led study identifies human enzyme that breaks down potentially toxic nanomaterials
4. Out of this world: New study investigates infection of human cells in space
5. 2010 Human Frontier Science Program awards announced
6. U Alberta find could shield humans from influenza virus
7. Alzheimers rat created for human research
8. Chemical cocktail affects humans and the environment
9. Understanding Climates Influence on Human Evolution -- March 31 public event
10. GENETICS 2010: Model Organisms to Human Biology Meeting
11. Caltech-led team provides proof in humans of RNA interference using targeted nanoparticles
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:12/16/2016)... Dec 16, 2016 Research and Markets has ... - Global Forecast to 2021" report to their offering. ... The biometric vehicle ... at a CAGR of 14.06% from 2016 to 2021. The market ... projected to reach 854.8 Million by 2021. The growth of the ...
(Date:12/15/2016)... Germany , December 15, 2016 ... provider, today announced an agreement with NuData Security, an ... forces. The partnership will enable clients to focus on good ... local data protection regulation. ... In order to provide a one-stop fraud ...
(Date:12/15/2016)... 2016 ... Research and Markets has announced the addition of the ... The report forecasts the global military biometrics market to grow at ... report has been prepared based on an in-depth market analysis with inputs ... prospects over the coming years. The report also includes a discussion of ...
Breaking Biology News(10 mins):
(Date:1/17/2017)... DIEGO , Jan. 17, 2017  An ... School of Medicine and St. Boniface Hospital Albrechtsen ... for peripheral neuropathy, an unmet health need affecting ... the Journal of Clinical Investigation, their results identify ... that prevent and reverse neuronal injury in animal ...
(Date:1/17/2017)... 2017  Zimmer Biomet Holdings, Inc. (NYSE and SIX: ... sales and earnings conference call will be broadcast live ... 8 a.m. Eastern Time.  A news release detailing the ... 7:30 a.m. Eastern Time the morning of the conference ... accessed via Zimmer Biomet,s Investor Relations website at ...
(Date:1/17/2017)... NEW YORK , Jan. 17, 2017 /PRNewswire/ ... mobile health coaching, is the first to offer ... and obesity. Noom,s Spanish diabetes prevention ... expand the reach and accessibility of lifestyle interventions ... of developing these conditions. Noom,s robust food database, ...
(Date:1/17/2017)... -- Only nine percent of U.S. consumers believe pharmaceutical and ... percent believe health insurance companies do, according to a ... U.S. adults believe health care providers (such as doctors ... (23%). "We are in the midst of ... vice president of reputation management and public affairs at ...
Breaking Biology Technology: