Complex sentence: Fabius Maximus died on December 31,45 BC-the last day of his consulship-and was replaced for the remaining hours of the year by Gaius Caninius Rebilus.
Split into simpler sentences: Fabius Maximus died December 31,45 BC--the last day of his consulship. He was replaced for the remaining hours of the year by Gaius Caninius Rebilus.