All the sculptural reliefs were incorporated in the temple during its construction between 1238 and 1263.
However, some of them were placed later. These were:
Capitals of the dome: 8th century
Capitals of the southern portico: end of the 4th - beginning of the 5th century
Capitals of the northern portico: middle of the 6th century
Capitals of the western portico: 5th and 9th century
Sculpture of the interior central arch: earlier than the 13th century