260m-year-old pre-reptile may have been first to walk upright
As per a new study, a pre-reptile may have been the earliest known to walk upright on all fours.
Sep 18, 2015, 14:03 PM IST
As per a new study, a pre-reptile may have been the earliest known to walk upright on all fours.
Sep 18, 2015, 14:03 PM IST