Modern humans 'crowded out' Neanderthals

2011-07-29 09:25

kalahari.com

Washington - A swell of modern humans outnumbered Neanderthals in Europe by nearly 10 to one, forcing their extinction 40 000 years ago, suggested a study of French archaeology sites on Thursday.

Scientists have long debated what caused the Neanderthals to die off rather suddenly, making way for the thriving population of more advanced Homo sapiens who likely moved in from Africa.

The latest theory, published in the journal Science, is based on a statistical analysis of artefacts and evidence from the Perigord region of southern France, where lies the largest concentration of Neanderthal and early modern human sites in Europe.

Researchers at the University of Cambridge found more sites where modern humans settled, larger settlement areas, greater densities of tools and bigger amounts of animal and food remains, suggesting Neanderthals were crowded out.

Homo sapiens also likely had more elaborate social networks and possibly sharper brains, as evidenced by the stone tools, jewellery and artwork they left behind which was much more advanced than Neanderthal creations.

Large numbers

Their arrival in such large numbers likely forced Neanderthals from their habitual settlements and into places where food and shelter were harder to find, said lead author Paul Mellars of Cambridge University.

"It was clearly this range of new technological and behavioural innovations which allowed the modern human populations to invade and survive in much larger population numbers than those of the preceding Neanderthals across the whole of the European continent," he said.

"Faced with this kind of competition, the Neanderthals seem to have retreated initially into more marginal and less attractive regions of the continent."

The last traces of Neanderthals, who had survived on the continent for some 300 000 years, have been uncovered in caves in modern-day Spain and Gibraltar.

Mellars suggested a final deathblow may have been delivered by a harsh cold snap, a theory that has been debated in the scientific community for many years.

The Neanderthals' extinction may have been "accelerated further by sudden climatic deterioration across the continent around 40 000 years ago", he said.
- SAPA

Read more on:    archaeology
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