Fayum mummy portraits
In particular copies of specific wall-paintings have been confidently identified in the Alexander Mosaic and Villa Boscoreale. There is a large group of much later Greco-Roman archaeological survivals from the dry conditions of Egypt, the Fayum mummy portraits, together with the similar Severan Tondo, and a small group of painted portrait miniatures in gold glass. Byzantine icons are also derived from the encaustic panel painting tradition, and Byzantine illuminated manuscripts sometimes continued a Greek illusionistic style for centuries.