1. belonging to a period other than that being portrayed: "'Titus' benefits from the effective use of anachronistic elements like cars and loudspeakers"
▪ belonging or appropriate to an earlier period, especially so as to seem conspicuously old-fashioned:"she is rebelling against the anachronistic morality of her parents"
An anachronism (from the Greek, 'against' and, 'time') is a chronological inconsistency in some arrangement, especially a juxtaposition of people, events, objects, language terms and customs from different time periods. Wikipedia