Human spine evolved over 33 lakh years ago: Study
Researchers have analysed a 33 lakh-year-old fossil that is considered the most complete spinal column of any early human relative. The fossil called "Selam" is a skeleton of a 2.5-year-old child discovered in 2000, which marked a transition of spinal structure from rib-bearing to lower back vertebrae. Researchers said the shift enabled human ancestors to walk upright on two feet.