The development of Christian basilicas began even before Constantine's reign: a 3rd-century mud-brick house at Aqaba had become a Christian church and was rebuilt as a basilica. Within was a rectangular assembly hall with frescoes and at the east end an ambo, a cathedra, and an altar. Also within the church were a catecumenon (for catechumens), a baptistery, a diaconicon, and a prothesis: all features typical of later 4th century basilica churches. A Christian structure which included the prototype of the triumphal arch at the east end of later Constantinian basilicas. Known as the Megiddo church, it was built at Kefar 'Othnay in Palestine, possibly c. 230, for or by the Roman army stationed at Legio (later Lajjun). Its dedicatory inscriptions include the names of women who contributed to the building and were its major patrons, as well as men's names. A number of buildings previously believed to have been Constantinian or 4th century have been reassessed as dating to later periods, and certain examples of 4th century basilicas are not distributed throughout the Mediterranean world at all evenly. Christian basilicas and "martyria" attributable to the 4th century are rare on the Greek mainland and on the Cyclades, while the Christian basilicas of Egypt, Cyprus, Syria, Transjordan, Hispania, and Gaul are nearly all of later date. The basilica at Ephesus's "Magnesian Gate", the episcopal church at Laodicea on the Lycus, and two extramural churches at Sardis have all been considered 4th century constructions, but on weak evidence. Development of pottery chronologies for Late Antiquity had helped resolve questions of dating basilicas of the period.