anachronism
Entry from World dictionary
Pronunciation:/əˈnakrəˌnɪz(ə)m/
noun
- a thing belonging or appropriate to a period other than that in which it exists, especially a thing that is conspicuously old-fashioned:the town is a throwback to medieval times , an anachronism that has survived the passing years
- [mass noun] the action of attributing something to a period to which it does not belong

Derivatives
anachronistic
Pronunciation:/-ˈnɪstɪk/adjectiveanachronistically
Pronunciation:/-ˈnɪstɪk(ə)li/adverb

Origin:
mid 17th century: from Greek anakhronismos, from ana- 'backwards' + khronos 'time'