As found in the Notitia Dignitatum. Provincial administration reformed and
dioceses established by
Diocletian,
c. 293. Permanent
praetorian prefectures established after the death of
Constantine I. Empire permanently partitioned after 395. Exarchates of
Ravenna and
Africa established after 584. After massive territorial losses in the 7th century, the remaining provinces were superseded by the
theme system in c. 640–660, although in
Asia Minor and parts of Greece they survived under the themes until the early 9th century.
As found in the Notitia Dignitatum. Provincial administration reformed and
dioceses established by
Diocletian,
c. 293. Permanent
praetorian prefectures established after the death of
Constantine I. Empire permanently partitioned after 395. Exarchates of
Ravenna and
Africa established after 584. After massive territorial losses in the 7th century, the remaining provinces were superseded by the
theme system in c. 640–660, although in
Asia Minor and parts of Greece they survived under the themes until the early 9th century.