By order of Pope Hormisdas (514-23), Dionysius made a third collection, in which he included the original text of all the canons of the Greek councils, together with a Latin version of the same; but the preface alone has survived.

Finally, he combined the first and second in one collection, which thus united the canons of the councils and the papal decretals; it is in this shape that the work of Dionysius has reached us.

The second part of the collection opens likewise with a preface, in the shape of a letter to the priest Julian, and a table of titles; then follow one decretal of Siricius, twenty-one of Innocent I, one of Zozimus, four of Boniface I, three of Celestine I, seven of pope Leo I, one of Gelasius I and one of Anastasius II.

Known today as the Registri ecclesiae Carthaginensis excerpta, this is a 'large body of conciliar legislation from the earlier Aurelian councils'.

Second, it also poses a problem for the theory that Dionysius was a staunch supporter of Laurence's camp in the Symmachan-Laurentian conflict several years previous.

The collection includes 38 decretals written by popes Siricius, Innocent I, Zosimus, Boniface I, Celestine I, Leo I, Gelasius, and Anastasius II.