anachronism

1. A chronological mistake; the erroneous dating of an event, circumstance, or object. [from 17th c.]Examples: "Indeed, that Hall of the Upper Temple is a sight not uninteresting, and with the exception of some trifling improvements and anachronisms which have been introduced into the practice there, a man may sit down and fancy that he joins in a meal of the seventeenth century."; "[W]e beg the reader to understand that we only commit anachronisms when we choose and when by a daring violation of those natural laws some great ethical truth is to be advanced […]"countableuncountable

2. A person or thing which seems to belong to a different time or period of time. [from 19th c.]Examples: "You are too young—it is an anachronism for you to have such thoughts"; "His movements, his clothes, everything about him, seemed slightly out of place in this assembly. He spoiled the pattern; like Alvin, he was an anachronism."; "There exist in Europe a number of independent or semi-independent countries which are complete anachronisms, they are mini-countries which have little business existing in this hurly-burly century, but somehow they survive."countableuncountable