Reference edition:

Iordanis Romana et Getica, recensuit Theodorus Mommsen, Berolini apud Weidmannos 1882, in Monumenta Germaniae Historica inde ab anno Christi quingentesimo usque ad annum millesimum et quingentesimum, edidit Societas Aperiendis Fontibus Rerum Germanicarum Medii Aevi, Auctorum antiquissimorum tomi V pars prior, Berolini apud Weidmannos 1882

The Romana, which the author describes as storiuncula directed at mediocres (Rom. 6-7), can be described as a composite of universal and Roman histories: beginning with Adam, Jordanes treats Abraham, the Assyrian kings, the Medes, and the Ptolemaic domination of the Egypt through to the Age of Augustus (Rom. 1-84); having come to this point, he leaps backwards and proceeds to recount the history of Rome from its foundation by Romulus through to the Age of Justinian, with the account becoming increasingly detailed (Rom. 85-388).  It remains extremely doubtful if or how much Jordanes’ Romana depends on Symmachus’ lost Historia Romana and on the family records of the Anicii (as Enßlin hypothesized, but see Croke and Girotti for differing conclusions), especially since our historian maintains that he drew on a number of sources (ex dictis maiorum floscula carpens, Rom. 2).  [G. Vanotti; tr. C. L. Caterine].