Triumphal Arch Mosaic: St. Luke the Evangelist
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Triumphal Arch Mosaic: St. Luke the Evangelist

Detail of mosaic on the upper part of the triumphal arch (or choir arch), dating from the 9th century. The winged ox, symbol of St. Luke the Evangelist, is quite unusual: rather like a Picasso painting, its head is very distorted, with the nostrils shown frontally but the rest in profile.