Ancient Romans are known for their sumptuous feasts, but according to a new study, an incredible 98% commoners ate food that was seen fit only for animals.

Romans are known for eating well, with mosaics from the empire portraying sumptuous displays of fruits, vegetables, cakes - and, of course, wine.

However, common people ate millet, a grain looked down upon by the wealthy as fit only for livestock, says a study published in the Journal of Anthropological Archaeology.

Results come from an analysis of anonymous skeletons in the ancient city's cemeteries, 'LiveScience' said.