The researchers argue this is clear evidence that chimpanzees do in fact have the jaw-voicebox 'coupling' required to make syllabic speech with consonants and vowels. Dr Ekström says ...

Almost one hundred years ago in 1912, in a gravel pit in the village of Piltdown, East Sussex, England, the fragments of a skull ... year-old jaw of an orangutan and the teeth of a chimpanzee.

Exhibiting some chimp-like characteristics ... robustus had a large, "robust" (heavier, thicker) skull, as well as a jaw and large teeth that were well adapted to chewing. Like some present ...