A closer look at '3.67m-year-old' skeleton
It took 20 years to excavate, clean and put together Little Foot, whose skeleton was found in caves north of Johannesburg.
Its exact age is debated, but South African scientists say the remains are 3.67 million years old.
This would mean Little Foot was alive about 500,000 years before Lucy, the famous skeleton of an ancient human relative found in Ethiopia.
Andrew Harding reports.