Little Foot.
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.
Both Little Foot and Lucy belong to the same genus - Australopithecus - but they are different species.
Scientists believe this shows humankind's ancestors were spread across a far wider area of Africa than had previously thought. It also suggests there were a diverse number of species.
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Little Foot was discovered in the Sterkfontein caves, north-west of South Africa's main city [...]