Friday, October 1, 2010

Australian-America Aborigines

Her name is Luzia and she has an interesting face. Her chin projects out further than her forehead and "and she has a long, narrow brain case, measured from the eyes to the back of the skull; as well as a low nose and low orbits, the space where the eyes sit."

A 11,500 year-old skeleton, Luzia (wikipedia link) was unearthed in Brazil in 1975 by archaeologist Annette Laming-Emperaire (wiki) . And Luzia's cranial features, along with 100s of other skulls, are startlingly similar to those of Australian Aborigines. These similarities have incited Evolutionary Biologist Walter Neves (wiki)(University of São Paulo) and others to assert that the Americas were settled multiple times, and that not all of these settlers came over the Siberia-Alaskan land bridge (wikipedia link).

The results suggest a clear biological affinity between the early South Americans and the South Pacific population. This association allowed for the conclusion that the Americas were occupied before the spreading of the classical Mongoloid morphology in Asia," Neves says.
Initially there was pessimism about the discovery, however further digging at four locations and DNA evidence appears to support the thesis.

In total, there are now hundreds of skeletons with the cranial morphology similar to Australian Aborigines, found in seven sites - as far north as Florida in the United States to Palli Aike in southern Chile.

CosmosMagazine reporter Jacqui Hayes goes on to say:

In June 2010 in the journal PLoS ONE, Neves and colleagues Mark Hubbe of Chile's Northern Catholic University and Katerina Harvati from Germany's University of Tübingen, showed that it was not possible for the Aborigine-like skeletons to be the direct ancestors of the Native Americans.

Nor was it possible for the two populations to share a last common ancestor at the time of the first entrance into the continent, they argued, based on the 57 cranial measurements that can be made on a skull.

So far, almost all DNA studies of Native Americans points to a single entry from Siberia. This may mean that the original population died out, or simply that DNA studies have been too narrow, argue a number of archaeologists.

Fascinating research. If you'd like read more CLICK HERE.

No comments:

Post a Comment

Should you have any problems posting a comment (it does happen) email it to Vale, O'Amice!

Twitter feed