Surface reconstructions (yellow) of fossils representing the only previously known parts of the skull region of this species are superimposed on the cranium. These 4.2-million-year-old fossils from Kenya2are an upper jaw bone and a lower jaw and ear bone. The projecting cheekbones (blue arrow) create an apparent facial similarity to a 2.5-million-year-old specimen of the hominin Paranthropus aethiopicus. Both the Kenyan and Ethiopian fossils of A. anamensis are characterised, among other features, by protruding jaws (red arrow) and a small earhole (black arrow)
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