Most of these sculptural remains display typical 6th-century features, such as marble sculptures inlaid with glass, but the epistyle dates from the restoration of the church in 797.

Their simple capitals support the plain beam of the architrave or epistyle, and between that and the cornice comes the frieze of triglyphs (a grooved upright over each column and each interval) and almost square metopes.

This continued from the time of Justinian into the middle Byzantine period, as shown from a 10th-century excavation in Sebaste in Phrygia, which uncovered a marble templon whose epistyle is covered with busts of saints.