Human quadrupeds discovered in Turkey

Sam Lister in Fox News:

Five brothers and sisters who can only walk naturally on all fours are being hailed as a unique insight into human evolution after being found in a remote corner of rural Turkey.

Scientists believe that the family may provide invaluable information on how man evolved from a four-legged hominid to develop the ability to walk on two feet more than three million years ago.

A genetic abnormality, which may prevent the siblings, aged 18 to 34, from walking upright, has been identified...

Nicholas Humphrey, evolutionary psychologist at the London School of Economics, who has visited the family, said that the siblings appeared to have reverted to an instinctive form of behavior encoded deep in the brain, but abandoned in the course of evolution.

More here.  [Thanks to Afshan Hussain.]