Monday 19 March 2012

Red Deer Cave People

As you may have heard in the news, it is thought that a new species prehistoric human has been identified from fossilised skeletal remains in south-west Asia.  A skull dug up in 1979 in Longlin Cave, Guangxi Province has only now been fully analysed, and its anatomy appears to be unique in its form against other skeletal evidence of other human ancestors.

This comes from Darren Curnoe at the University of New South Wales in Sydney, Australia.  The skull appears to show a hash of some very 'primitive' features, but also some very modern ones.  Quoting Curnoe,

"They have rounded braincases with prominent brow ridges, thick skull bones, short and flat faces, tucked under the front part of the brain, a broad nose, jutting jaws that lack a human-like chin, brains moderate in size with a modern looking frontal lobe, but primitively short parietal lobes, and they have large molar teeth."
(Source: FAQs on the Red Deer Cave People: http://www.darrencurnoe.net/documents/QA_RedDeerCavePeople.pdf )

Photo by Curnoe

This is extremely exciting, not in the least because evidence of this hominin has apparently appeared also at Mula Cave in Yunnan Province, according to Curnoe and Ji Xueping of Yunnan University.  Curnoe explains that they are hesitant to put this species in with Homo sapiens, mainly because the species H. sapiens is still under question as to what classifies as an example of one! As such, Curnoe says these people could present a 'new evolutionary line' or a 'previously unknown prehistoric population'. (See FAQs page above).

It's also exciting because as Curnoe says:
"...dated to between about 14,500 and 11,500 years ago, the Red Deer Cave people are the youngest population to be found anywhere in the world whose anatomy doesnʼt comfortably fit within the range of modern humans: whether they be modern humans from 150 or 150,000 years ago." (See FAQs page again).

That's very special indeed.  This furthers the view of a very diverse 'human' population at the end of the Ice Age, through which the Red Deer Cave people must have survived.  Christ Stringer, a British anthropologist, suggests that these Red Deer Cave people may have been related to the Denisovian people, whilst one of my lecturers last term Mike Petraglia agrees that a diverse population of 'humans' might have existed at the end of the Ice Age, more broad than we thought.

All in all, this is a very cool discovery, and I can't wait to see if the DNA of the bones from Red Deer Cave can be properly analysed.

For more information and as one of my sources, you can read the simple but meaty article from New Scientist: http://www.newscientist.com/article/dn21586-chinese-human-fossils-unlike-any-known-species.html.  Curnoe's FAQ page is also great as a quick summary of his report.  You can read the original PLoS article here: http://www.plosone.org/article/info%3Adoi%2F10.1371%2Fjournal.pone.0031918.

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