Name commonly given to a document titled in the sole MS Vatican. gr. 1941, X c. Epitome of the years from Adam to the 20th year of the reign of Heraclius and of Heraclius, the new Constantine, his son in the 18th year of that reign, third indiction = 630. The prologue 1st half of the 7th c. deals with the theological basis for determining the date of Easter in conformity with the Alexandrian tradition and with the decisions of the Council of Nicaea and, reviewing the different festive cycles, announces a mathematical method for making theological truth coincide with historical accuracy, as a demonstration of the harmony between faith and history.
Then follow the chronological tables, furnished with historical notes, from the creation of the world to the year 628 the work, rewritten in more than one place, is thus mutilated. The computations are by Olympiads, consular fasti and indictions. The anonymous author must be considered the coiner of the so-called proto-Byzantine era. In the late 19th c., the noted Egyptologist W. Golenischev acquired an illustrated papyrus from a Gazan antiquarian; the papyrus, probably copied in a monastery contains a Chronographus anonymous. This work shows strong similarities to the Greek model of the Barbarus Scaligeri.