Scientists reveal most complete skeleton of a human ancestor

South Africa-based scientists have revealed the most complete skeleton ever of a pre-human ancestor older than 1.5 million years. The Australopithecus fossil is also the oldest fossil hominid in southern Africa, dating back 3.67 million years. While the fossil dubbed "Little Foot" was discovered in 1997, it took palaeontologists 20 years to carefully excavate and prepare the skeleton.