Byzantine Egyptian Ivory

This ivory of a female nude was carved in 5th century Egypt, which was under Byzantine rule at the time. It is 11 x 4.8 cm, carved in high relief on a background that had been broken away. The ivory is missing her left arm and bottom of her legs. The ivory is at the Walters Art Museum.
Recommended reading
Egypt in the Byzantine World, 300-700 by Roger S. Bagnall. Via Google Books.
The Arts of Byzantium by Helen C. Evans, Melanie Holcomb and Robert Hallman. JStor article.
Transfigurations of Hellenism by László Török. Via Scribd.