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Psi Cubed
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Registered: 09/28/03
Posts: 586
"Hobbits" discovered
    #3677909 - 01/25/05 03:28 PM (13 years, 4 months ago)


article source: nature
Published online: 27 October 2004; | doi:10.1038/4311029a
Little lady of Flores forces rethink of human evolution
Rex Dalton
Dwarf hominid lived in Indonesia just 18,000 years ago.

This article is part of an interactive special report. Click here for full coverage.
A new human-like species - a dwarfed relative who lived just 18,000 years ago in the company of pygmy elephants and giant lizards - has been discovered in Indonesia.

Skeletal remains show that the hominins, nicknamed 'hobbits' by some of their discoverers, were only one metre tall, had a brain one-third the size of that of modern humans, and lived on an isolated island long after Homo sapiens had migrated through the South Pacific region.

"My jaw dropped to my knees," says Peter Brown, one of the lead authors and a palaeoanthropologist at the University of New England in Armidale, Australia.

I nearly dropped to my knees at one point examining the specimen.

Paleoanthropologist Peter Brown
University of New England in Armidale, Australia.

The find has excited researchers with its implications - if unexpected branches of humanity are still being found today, and lived so recently, then who knows what else might be out there? The species' diminutive stature indicates that humans are subject to the same evolutionary forces that made other mammals shrink to dwarf size when in genetic isolation and under ecological pressure, such as on an island with limited resources.

The find has been classed as a new species - Homo floresiensis.
? P. Brown
The new species, reported this week in Nature1,2, was found by Australian and Indonesian scientists in a rock shelter called Liang Bua on the island of Flores. The team unearthed a near-complete skeleton, thought to be a female, including the skull, jaw and most teeth, along with bones and teeth from at least seven other individuals. In the same site they also found bones from Komodo dragons and an extinct pygmy elephant called Stegodon.

The hominin bones were not fossilized, but in a condition the team described as being like "mashed potatoes", a result of their age and the damp conditions. "The skeleton had the consistency of wet blotting paper, so a less experienced excavator might have trashed the find," says Richard Roberts of the University of Wollongong, Australia.

"Only the Indonesians were present at the actual moment of discovery - the Australian contingent had departed back to Oz," says Roberts. He credits Thomas Sutikna of the Indonesian Centre for Archaeology in Jakarta for the excellent handling of the samples. The success has inspired national pride at the centre, the researchers say. "This is very important for Indonesian society," says co-author R. P. Soejono.

It's the most extreme example ever found of human adaptation.

Archaeologist Robert Foley
University of Cambridge, UK

The discovery is prompting increased scrutiny of sites on other Southeast Asian islands, both to look for more of the same species and to place it in context with Homo sapiens and Homo erectus, our closest relative. Homo erectus was found to have lived on the nearby island of Java as long as 1.6 million years ago; the team suggests that the Flores hominins may be their descendants.

Peter Brown photographs his find.
? P. Brown
Dating more bones could help determine whether the species was a short-lived branch of human evolution or survived for longer. Preliminary dating places it at about 70,000 years ago, but it may extend back 800,000 years. "We were hoping we might find a little hominin from that early," says author Michael Morwood, an archaeologist at the University of New England.

In the meantime, researchers are hoping to find DNA in the bones, which would help to clarify the relationships between species. DNA has previously been extracted from European Neanderthals living in the same time period. But they have so far failed to find DNA in the teeth of the Stegodon found in the same cave, says Brown.

Additional reporting by Michael Hopkin.




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Re: "Hobbits" discovered [Re: Mycomancer]
    #3678087 - 01/25/05 04:09 PM (13 years, 4 months ago)

Old  but still interesting  :grin:

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