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Ancient man 'used tooth picks'

Ancient man 'used tooth picks'
trefwoorden: oermens - tandenstoker
Our human ancestors may have taken a close interest in dental hygiene.
Palaeontologist Dr Leslea Hlusko, of the University of Illinois, claims to have evidence ancient man used rudimentary tooth picks.
She has shown that curved grooves found on fossil teeth dating back 1.8 million years could be the result of erosion caused by repeated rubbing with grass stalks.

Lees verder bij: BBC News (6 november 2003)