From Middle Greek anachronismo, the word Anachronism refers to an event, person, object or custom that is chronologically out of place. It can also be an error in chronology, in which a person, object, event, etc., is assigned a date or period other than the correct one.
Popularized by the Dresden Dolls’ song Girl Anachronism, you probably didn’t know the existence of the word until you heard that song, bitch.
out of place or at the wrong time
The Dresden Dolls song "Girl Anachronism"
An object or event that is seemingly out of place in time.
The watch on Charleton Heston's wrist in "The Ten Commandments" seemed an anachronism when it was mistakenly visible in the actual movie.