ages past

• antiquityGreat age, ancient era
• ancientVery old indeed
• eonsImmense spans of time
• centuriesHundred-year periods
• millenniaThousand-year periods

bygone · olden · yore · timeless · primordial · forgotten · distant · epochs · eternity · ancestral · prehistoric · ruins · dust · chronicles · legends · faded · crumbling · scrolls

• The Pastpast, ancient, old, formerly, previously
• antediluvianNoah, ark, great flood, deluge, Methuselah