[[quoteright:330:[[ComicStrip/CalvinAndHobbes http://static.tvtropes.org/pmwiki/pub/images/tyrannosaur_in_f-14.jpg]]]]
[[caption-width-right:330:''"[[CoolButStupid Tyrannosaurs in F-14s!]]"'']]

->"''Spare me your space-age technobabble, UsefulNotes/AttilaTheHun!''"
-->-- '''Zapp Brannigan''', ''WesternAnimation/{{Futurama}}''

Stories often confuse two or more time periods. For example, Renaissance dress may appear with 12th-century crusaders in a story set in Charlemagne's empire. Imperial Roman troops might have guns. Cavemen might be fightings [[ArtisticLicensePaleontology Dinosaurs]] to survive. This is [[OlderThanTheyThink not only a modern trope]]. Medieval artists, for example, routinely dressed Biblical figures in contemporary fashions, and the Greek myth of Theseus features similar confusion. Some critics think the very first writer to actually try to reconstruct past times as different from the current era was Sir Creator/WalterScott.

This has a number of more-particular variations:

* AlternateHistory
* ArtisticLicensePaleontology: The biological version of this trope.
* CosmeticallyAdvancedPrequel
* LowCultureHighTech: Low tech culture using far advanced technologies it doesn't understand.
* FontAnachronism: When creators use fonts in their works that weren't even invented yet.
* FutureImperfect
* PurelyAestheticEra
* PresentDayPast
* PoliticallyCorrectHistory
* RealityIsUnrealistic: The producers get the period right, but are criticized because it's not what the audience was expecting.
* SchizoTech: The mix of technologies purposefully makes very little sense.
* SteamNeverDies
* WeirdHistoricalWar: When real historical wars' depiction in stories use advanced technology that comes much later than they should.

'''Please note:''' This is not a place to pothole any anachronism you find in a work. Those examples belong on the Trivia subpage of that work. This Trope is about the setting/environment of the work, and as such, requires multiple anachronisms affecting how the viewer of the work sees the setting.

%%If you have time, please take time to put examples in alphabetical order. This page Administrivia/HowToAlphabetizeThings should help you with that.
!!Examples from:
* AnachronismStew/AnimeAndManga
* AnachronismStew/{{Art}}
* AnachronismStew/AudioPlay
* AnachronismStew/ComicBooks
* AnachronismStew/FanFic
* AnachronismStew/FilmsUsingRuleOfFunny
* AnachronismStew/FilmsWithNoGoodExcuse
* AnachronismStew/{{Literature}}
* AnachronismStew/LiveActionTV
* AnachronismStew/{{Music}}
* AnachronismStew/{{Pinball}}
* AnachronismStew/{{Radio}}
* AnachronismStew/{{Roleplay}}
* AnachronismStew/TabletopGames
* AnachronismStew/{{Theater}}
* AnachronismStew/VideoGames
* AnachronismStew/VisualNovels
* AnachronismStew/WebComics
* AnachronismStew/WebOriginal
* AnachronismStew/WesternAnimation
* AnachronismStew/RealLife