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
To the further question, from what Greek stock the Etruscans in the first instance received their art-models, a categorical answer cannot be given; yet relations of a remarkable kind subsist between the Etruscan and the oldest Attic art. The three forms of art, which were practised in Etruria at least in after times very extensively, but in Greece only to an extent very limited, tomb-painting, mirror-designing, and graving on stone, have been hitherto met with on Greek soil only in Athens and Aegina.
The Tuscan temple does not correspond exactly either to the Doric or to the Ionic; but in the more important points of distinction, in the course of columns carried round the -cella-, as well as in the placing of a separate pedestal under each particular column, the Etruscan style follows the more recent Ionic; and it is this same Iono-Attic style of building still pervaded by a Doric element, which in its general design stands nearest of all the Greek styles to the Tuscan. In the case of Latium there is an almost total absence of any certain traces of intercourse bearing on the history of art.
If it was--as is indeed almost self-evident--the general relations of traffic and intercourse that determined also the introduction of models in art, it may be assumed with certainty that the Campanian and Sicilian Greeks were the instructors of Latium in art, as in the alphabet; and the analogy between the Aventine Diana and the Ephesian Artemis is at least not inconsistent with such an hypothesis. Of course the older Etruscan art also served as a model for Latium. As to the Sabellian tribes, if Greek architectural and plastic art reached them at all, it must, like the Greek alphabet, have come to them only through the medium of the more western Italian stocks.
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Reference address : https://www.ellopos.net/elpenor/rome/1-15-art.asp?pg=39