article_snippet.sent: There have been various theories put forward over the years about the diet of our early ancestors, but a study from Oxford University published last year claimed to have finally settled the debate.
article_snippet.sent: An ancient human ancestor known as ‘Nutcracker Man’ lived mainly on a diet of tiger nuts, worms and grasshoppers, according to research.
article_snippet.sent: Scientists believe this diet explains why the ancient hominin relative, called Paranthropus boisei, which lived in East Africa between 2.4 and 1.4 million years ago, had such distinctively powerful jaws and large, flat molar teeth.