Please note that Mommsen uses the AUC chronology (Ab Urbe Condita), i.e. from the founding of the City of Rome. You can use this reference table to have the B.C. dates
From: The History of Rome, by Theodor Mommsen
Translated with the sanction of the author by William Purdie Dickson
All these works, while not coming up to the Greek conception of history,(58) were, as contrasted with the mere detached notices of the book of Annals, systematic histories with a connected narrative and a more or less regular structure.
58. It is evidently by way of contrast with Fabius that Polybius (xl. 6, 4) calls attention to the fact, that Albinus, madly fond of everything Greek, had given himself the trouble of writing history systematically [--pragmatiken iotorian--].
They all, so far as we can see, embraced the national history from the building of Rome down to the time of the writer, although in point of title the work of Naevius related only to the first war with Carthage, and that of Cato only to the very early history. They were thus naturally divided into the three sections of the legendary period, of earlier, and of contemporary, history.
Do you see any typos or other mistakes? Please let us know and correct them
Reference address : https://www.ellopos.net/elpenor/rome/3-14-literature-art.asp?pg=89