Caption Paranthropus molars recovered from Nyayanga site. Left upper molar (top) was found on the surface at the site, and the left lower molar (bottom) was excavated. Beginning in 2015, a series ...

The three groups of hominins (human-like creatures) belonged to Australopithecus (the group made famous by the "Lucy" fossil from Ethiopia), Paranthropus and Homo - better known as humans.

Two big fossil teeth found at the site belong to an extinct human cousin, known as Paranthropus. Scientists had previously thought that Oldowan tools, a kind of simple stone implement, were only ...