In 451 there was quoted at the Council of Chalcedon a collection of councils no longer extant, nor has the name of the compiler ever transpired. At the beginning of the collection were then placed the decrees of Nicæa (325); subsequently the canons of Antioch (341) were included, in which shape it was known to the Fathers of Chalcedon. In the latter part of the fifth century the canons of Laodicæa (343-81), Constantinople (381), Ephesus (431) and Chalcedon (451), were incorporated with this ecclesiastical code, and finally (after the canons of Neo-Cæsarea) the decrees of Sardica (343-44), in which form the collection was in use during the sixth century. Though unofficial in character, it represents (inclusive of sixty-eight canons taken from the "Canonical Epistles" of St. Basil, I, III) the conciliar discipline of the Greek Church between 500 and 600.