A 1.4 million-year-old fossil jaw belongs to a previously unknown human relative from southern Africa, a new study finds. The extinct human relative is from the genus Paranthropus, whose nickname is "nutcracker man" because of its massive jaws and huge molars.

Scientists have identified a previously unknown human relative from a 1.4-million-year-old fossilized jawbone, reshaping our understanding of early human evolution. Found in Swartkrans Cave, South Africa,

While the modern day human is usually linked to homo sapiens, scientists have discovered another human relative that had been previously unknown. A new study found that a 1.4 million-year-old jaw belonged to the genus Paranthropus from southern Africa.