[[quoteright:350:[[WesternAnimation/{{Futurama}} http://static.tvtropes.org/pmwiki/pub/images/PhlebotinumKilledTheDinosaurs_3901.png]]]]
[[caption-width-right:350: The mystery is forever solved]]

->'''Fry:''' Uh, what really killed the dinosaurs?\\
'''Big Brain:''' MEEEEEEEEEE!
-->-- ''WesternAnimation/{{Futurama}}''

While writing a story, an author needs a way to show [[TheEndOfTheWorldAsWeKnowIt how bad things would get if the]] BigBad [[TheEndOfTheWorldAsWeKnowIt took control or the]] AppliedPhlebotinum [[MadeOfExplodium blew up]]. So the author attributes some historical disaster to their plot. And what's the biggest disaster one can imagine?

Why, none other than the [[http://tvtropes.org/pmwiki/pmwiki.php/UsefulNotes/Dinosaurs#Extinctionn extinction that wiped out the dinosaurs]]. Despite [[http://news.bbc.co.uk/1/hi/sci/tech/8550504.stm being confirmed with a huge degree of certainty and consensus]] to be some kind of asteroid or comet impact, the debate has made the Cretaceous-Paleogene extinction ideal due to the sheer number of theories flying about, making it a {{Stock Unsolved Myster|ies}}y to rival even WhoShotJFK. What's one more [[EpilepticTree crazy theory]] going to hurt? Other works go along with the mainstream hypothesis, but say that their factor [[ColonyDrop caused the impactor to fall to earth]], or was the impactor itself.

Often ignored in fictional portrayals is that the dinosaurs were the top of a food chain–wide extinction event; the "direct" victims of the event (whatever it was) probably would have been plants, algae, and plankton, and it was ''their'' disappearance that killed the animals which ate them, killing the animals which ate ''them'', etc.

Similarly fantastic theories have sometimes been suggested to explain why other species went extinct, though due to SmallReferencePools, most writers [[TheGreatestHistoryNeverTold tend to ignore]] the [[https://en.wikipedia.org/wiki/Permian–Triassic_extinction_event Permian–Triassic extinction]], which was the biggest mass extinction ever. The [[https://en.wikipedia.org/wiki/Triassic–Jurassic_extinction_event Triassic–Jurassic extinction]], which was almost as widespread as the Cretaceous–Paleogene and directly led to dinosaurs becoming the dominant forms of life for the next 135 million years, is even more obscure. Apparently it's only the fall of the dinosaurs, and not their rise to prominence, that's deemed interesting enough for fiction.

A subtrope of HistoricalInJoke. See TheDinosaursHadItComing when the dinosaurs' extinction is blamed on themselves. Compare ArtisticLicensePaleontology, which this trope can fall into if not done well. Contrast with LostWorld, where the dinosaurs manage to duck and cover in a cave/valley/jungle before the big event. See also TheCretaceousIsAlwaysDoomed, which is about the tendency of time-travelers to arrive at dates of historical significance--''especially'' the end of the dinosaurs--by complete coincidence; that trope can overlap with this one if the reason they're present for the extinction is because they ''caused'' it.


[[folder:Anime & Manga]]
* In an extended cut of ''Anime/DragonBallZBattleOfGods'', Beerus claims that he went to Earth millions of years ago, and that he wiped out the dinosaurs [[DisproportionateRetribution because they were rude to him]]. This is reconfirmed in ''Anime/DragonBallSuper''.
** Then again, dinosaurs are still around in the series, so Beerus wasn't all that thorough.
* A tennis player wiped out the dinosaurs in ''Manga/ThePrinceOfTennis'', when he hits tennis balls so fast they go back in time and wipe out the dinosaurs, beating his opponent. [[MundaneMadeAwesome What do you mean it's not awesome?]]
* In one chapter of ''Manga/FrankenFran'', [[MadScientist Fran]] claims that the dinosaurs went extinct because they were too large and inefficient to survive, to try and justify her disbelief at how the MonsterOfTheWeek could even exist. [[YouFailBiologyForever She fails biology forever]] [[ArtisticLicensePaleontology and makes paleontologists cry]], but kudos to having a [[TyrannosaurusRex T.rex with protofeathers]].
* [=ChoRyuJin=] killed the dinosaurs in ''Anime/GaoGaiGar''. A giant meteor was involved, but the fans like to think it was all [=ChoRyuJin=]'s fault.
* Getter Rays in ''Manga/GetterRobo'' are deadly to dinosaurs. They didn't completely wipe out the Dinosaurs though, as the Dinosaur Empire was able to hide in the Magma Layer. Hence the heroes using Getter Robo to finish the job when the Dinos show up in modern times.
* The meteor was deliberately dropped by aliens in ''Manga/{{Guyver}}'', to clear out their initial experimental soldiers -- dinosaurs -- and make way for whatever survived.
* From ''Manga/SgtFrog'', Angol Mois' mother is credited for this (in context, the Angol are a race of ''planet-splitting world destroyers'', so this crosses into HoldingBackThePhlebotinum.)
** The first movie contradicts this however, by showing murals of ancient Keronian weapon Kiruru of being responsible.
* The Manga version of ''Anime/SCryed'' shows that Kazuma accidentally killed the dinosaurs with one of his punches (that broke through the walls of space and time).
* ''Anime/ThisUglyYetBeautifulWorld'': [[spoiler:Hikari is the embodiment of extinction, and travels from planet to planet, causing mass extinctions to make room for new species. Last time she came to Earth was to wipe out the dinosaurs for mammals.]]
** Also from Creator/StudioGainax, the 1st Impact of ''Anime/NeonGenesisEvangelion'' used to be a mythical GreatOffscreenWar between dinosaurs and the Founding Race from ''Anime/NadiaTheSecretOfBlueWater'', but was retconned out of the way in later publications.

[[folder:Comic Books]]
* In the ''ComicBook/TwoThousandAD'' serial ''Flesh'', the dinosaurs were wiped out due to over hunting by time-traveling cowboys. Yeah...
* In ''VideoGame/PredatorConcreteJungle'', it is said that the Predators exterminated the dinosaurs. [[CanonDiscontinuity This is ignored by virtually all other Predator works]].
* The comic continuation of ''ComicBook/{{Angel}}'' has a [[ShowWithinAShow in-universe movie adaptation]] of Angel's adventures claiming that it was a [[NinjaPirateZombieRobot Vampire Tyrannosaurus]] that killed all the Dinosaurs, after having cursed God in his "own Dinosaur way" after losing a mate, and Satan giving him the power.
* ''ComicBook/AtomicRobo'': According to Dr. Dinosaur, mammal energies from the present traveled back to the past, killing all of the dinosaurs except for the Doctor himself (who gained his GENIUS INTELLIGENCE!). Dr. Atomic Robo Tesla strongly disagrees with this hypothesis.
* Franchise/MarvelUniverse:
** In ''Comicbook/IronMan'' Annual #10, Gaea saw the dinosaurs as an evolutionary dead end that would prevent mammals from evolving to their full potential, and focused on mammals instead, angering Set.
** In Dan Jurgens' ''[[ComicBook/TheMightyThor Thor]]'' #80, a meteor shower wiped out the dinosaurs, caused by the creation of the forge that forged {{Mjolnir}}.
** In ''ComicBook/WestCoastAvengers'' #44-49, That Which Endures, a collective entity responsible for natural selection, decided reptilians were a dead and chose to focus on mammalians, leading to the dinosaurs dying out.
** In ''ComicBook/TheUnbeatableSquirrelGirl'', Loki claimed that the last time Ratotoskr was loose, "all the raptors got replaced by hairless apes who invented fax machines."
* In ''ComicBook/{{Planetary}}'' giant multi-dimensional ship (similar a little to [[ComicBook/TheAuthority The Carrier]]) crashed on Earth, killing the dinosaurs.
* In ''[[ComicBook/NineteenSixtyThree 1963: No One Escapes The Fury!]]'', the villain's opening line is, "Who killed the dinosaurs? ''I did!''" Given that he's a psychic living fossil T-rex, he can back that up.
* In one Disney Comic featuring Donald, Donald goes back in time and accidentally makes a second moon explode.
* In ''ComicBook/GodzillaRageAcrossTime'', the dinosaurs were killed out by a fight between Earth's Kaiju and a Xillian invasion that included Kaiser Ghidorah.

[[folder:Comic Strips]]
* In ''ComicStrip/FoxTrot'', Jason theorizes that time-traveling big game hunters killed the dinosaurs.
* One ''ComicStrip/TheFarSide'' strip shows dinosaurs smoking cigarettes, with the caption "what really killed the dinosaurs."

[[folder:Fan Works]]
* In the ''FanFic/DayOfTheBarneyTrilogy'', [[Series/BarneyAndFriends Barney and Baby Bop]] summoned the meteor that killed the dinosaurs 65 million years ago by singing "I love you, you love me." Believe it or not, this isn't the most heinous deed on their HistoricalRapSheet.
* In Creator/AAPessimal's ''Literature/GoodOmens'' fic ''[[https://www.fanfiction.net/s/5304252/3/I-shall-endure-to-the-end I Shall Endure...]], the dinosaurs died out as a result of the Great Flood due to prioritization on Noah, Crowley and Aziraphale's parts--there was just no way to fit a breeding pair of brontosauruses on the Ark, and the tyrannosaurs would have eaten out all the other animals by the time the trip was over, so they had to be left out.
* In ''Fanfic/MesozoicEffect'', the dinosaurs and their ancient civilization were wiped out by the Reapers, except for those who escaped in [[HumanPopsicle cryosleep]] in their [[ElaborateUndergroundBase bunkers]].

[[folder:Films -- Live-Action]]
* In ''Film/ReignOfFire'', it was the [[OurDragonsAreDifferent dragons]] [[CoolVersusAwesome that killed]] the dinosaurs. Of course, scientists only learn of this too late to warn everyone of them.
* ''Rebirth of Mothra'':
** 1998's ''Film/RebirthOfMothra3'' places the blame on the Cretaceous version of [[EldritchAbomination King]] [[OmnicidalManiac Ghidorah]], who now plans to do the same to humanity by [[AdultFear devouring the life-energies of our children]].
** It's implied that Desghidorah from the first film was the reason life went extinct on ''Mars'', and that it also planned to do the same to prehistoric Earth until Mothra managed to [[SealedEvilInACan imprison him for all eternity]].
* In ''Film/BatmanAndRobin'', Mr. Freeze thinks the Ice Age killed the dinosaurs--a bit of a suspect statement coming from a scientist, even if paleontology isn't his field. [[ArtisticLicensePaleontology He is, of course, wrong]].
* The opening narration for ''Film/NightOfTheComet'' states that the comet (which turns most animal life into red dust) last came close to Earth when the dinosaurs disappeared.
* In ''Film/KamenRiderJ'', the extinction of the dinosaurs was due to the parasitic lifeform Fog Mother who arrived on Earth to feed and spawn her offspring.
* In ''Film/TransformersAgeOfExtinction'', [[spoiler:the extinction of the Dinosaurs was caused by terraforming performed by the creators of the Transformers who tried to turn the earth into Transformium.]]
* In ''Film/PacificRim'' there's a deliberately-ambiguous statement that the dinosaurs were [[spoiler:either killed off by Kaiju, or were the first failed attempt at ''creating'' Kaiju.]]
* In ''Film/JupiterAscending'', the extinction of the dinosaurs was engineered by aliens because they were deemed too hostile to human life. Once they were gone, Earth was seeded for eventual harvesting.

* In one path on ''Literature/StarChallenge'''s book "Dimension of Doom", exploring an AlternateUniverse you find a planet with dinosaurs larger than its original Earth counterparts. If you ask the one who's in charge there about that he comments that one of their robots in a mission of exploration found the Earth in the Cretaceous era. They wanted a sample of the dominant creatures living in that planet... and said robot brought ''[[SciFiWritersHaveNoSenseOfScale all]]'' of them to that alternate universe planet.

* The ''Astrosaurs'' series, similar to the ''Star Trek'' example, which said that dinosaurs and other prehistoric creatures discovered space travel and left Earth before the meteor struck.
* In ''Literature/{{Monster}}'', BigBad Lotus mentions having to "undo" the dinosaurs because they were part of the [[spoiler:universe's master plan to destroy her]].
* In ''Literature/TheDresdenFiles'', [[HornyDevils Thomas Raith]] claims that [[PowerOfLove love killed the dinosaurs]]. Harry [[YouFailBiologyForever calls him out on it]]. Essentially, the tale talks about how the meteor did wipe out the big stuff, but the dinosaurs didn't regain their position because mammals could feel love and be devoted to their mates and offspring, making them more likely to survive. It should be noted this is a vampire folk tale being told to [[BookDumb a wizard with a GED]], and should be taken with a grain of salt, especially given that some dinosaurs did have strong nesting instincts.
* The entire novel ''Literature/TyrannosaurCanyon'' revolves around finding that ImportedAlienPhlebotinum killed the dinosaurs. [[spoiler:Specifically, that aliens sent a disease to wipe out the dinosaurs so mammals would diversify and eventually evolve into humans. Yeah...]]
* The MonsterOfTheWeek in ''[[Literature/{{Animorphs}} Megamorphs #2]]'' causes the extinction of the dinosaurs by redirecting a meteor earthward. To rephrase it, the dinosaurs were killed by a plain old meteor... FLUNG BY ALIENS! To wipe out OTHER aliens who wanted to settle on Earth and [[HistoricalInjoke plant broccoli]]. For extra craziness, the benign alien settlers had a plan to divert the meteor with a nuclear missile, but it was sabotaged... [[BeenThereShapedHistory by one of the heroes]], becasue, well, [[IDidWhatIHadToDo that extintion was necessary for the human race to emerge]].
* Good ol' [[Creator/HPLovecraft Lovecraft]] actually subverts this trope. Apparently Cthulhu and his minions were the cause of the ''Permian'' extinction.
** Some fanon sources claim Cthulhu was also responsible for wiping out the Dinosaurs, cause that would be [[RuleOfCool awesome]].
* Creator/DavidDrake's ''Time Safari''. Human beings travel back in time to hunt dinosaurs, and of course most of these trips go back to the Late Cretaceous because everybody wants to bag a [[TyrannosaurusRex T.rex]]. You may think you know where this was going, but its subverted - what actually does in the dinosaurs is a captive tyrannosaur that was re-released into the Cretaceous wild. Seems it was carrying a bird infection that it picked up while it was in the 20th century... Which makes [[http://www.plosone.org/article/info%3Adoi%2F10.1371%2Fjournal.pone.0007288 this]] HilariousInHindsight.
* Played with in Michael Crichton's ''Literature/TheLostWorld1995'', in which Ian Malcolm makes a study on extinction and begins to debunk the theory of the dinosaurs being wiped out by a meteor. [[spoiler:Towards the end, they establish that any mistake or miscalculation in an ecosystem, no matter how small, can compromise the survival of an entire species.]]
* Creator/DavidWeber's ''Literature/EmpireFromTheAshes'' trilogy has the Achuultani, genocidal [[HordeOfAlienLocusts aliens]] who have been wiping out all complex life in the galaxy (besides themselves) for over seventy million years. While they were destroying a defensive base of the alien "First Imperium" on [[EarthShatteringKaboom the planet that the asteroid belt used to be]], they whacked Earth with a much smaller asteroid, causing the extinction.
* In ''The Science Of Literature/{{Discworld}}'', the Terribly Dull Lizards--like many organisms from other time periods, very nearly including humans -- were indeed wiped out by a random and cataclysmic meteorite impact. It's still PhlebotinumKilledTheDinosaurs, because the reason there are so many rocks drifting around the solar system to ''become'' meteorites is because the UU student body had been tossing them at "The Target" (= Jupiter) as part of a cross-cosmic video game, and they never bothered to sweep up their unused ammunition.
* In Kage Baker's ''Literature/TheCompanyNovels'', a defective Immortal claims to have wiped out the dinosaurs through his abuse of time travel. However, he's also quite clearly insane, so it isn't certain if he's telling the truth.
* In the Literature/StarTrekTheLostEra novel ''The Buried Age'', the Permian extinction event is chosen instead - it was a consequence of an artificially-induced galaxy-wide disaster. The SufficientlyAdvancedAliens known as Manraloth accidentally caused the entire galactic population to AscendToAHigherPlaneOfExistence, releasing terrible amounts of energy which irradiated planets. In the aftermath, the artificially maintained habitats of the Manraloth degraded, destabilizing stars, among other dangerous side-effects. The galaxy was an irradiated hellhole until sapient life evolved again millions of years later.
* In ''Literature/DirkGentlysHolisticDetectiveAgency'', it's not the dinosaurs whose extinction is blamed on phlebotinum, but that of the dodo. A time-traveler indirectly caused it to be wiped out because he'd meddled with prehistory to save the coelacanth.
* In Creator/CharlesPellegrino's ''Flying to Valhalla'', it's suggested that the mass extinction between the Eocene and the Oligocene [[spoiler:was engineered by aliens to prevent Earth from becoming a threat]].
* Creator/JackChalker's ''Literature/WellWorld'' series has it that when the universe was manually rebooted, a world was chosen for each of the races to get seeded upon. Earth came up almost perfect for humanity, but had developed dinosaurs naturally. So the Guardian tweaked the axial tilt of the world slightly, thus killing most of them off to make room for the incoming colonists. Needless to say, time was moving at an extremely fast pace during this--only moments passed by during the process.
* Author and physician Robin Cook's novel ''Invasion'', had the dinosaurs completely wiped out by super advanced alien entities hoping to assimilate intelligent creatures like humanity into their collective.
* The Creator/RykESpoor and Creator/EricFlint novel ''Literature/{{Boundary}}'' (and the sequels) also used the alien-directed asteroid projectile explanation (apparently in a civil war against bases on Earth).
* In ''Dracula Unbound'', the extinction of the dinosaurs was triggered by a nuclear bomb set off by time-travelers in order to wipe out a nest of vampires, which evolved from pterosaurs.
* The Steve Alten novel ''Literature/{{Domain}}'', the asteroid that wiped out the dinosaurs was in fact [[spoiler:a spaceship of an evil multi-dimensional entity that was shot down by the good aliens, who then land on the planet (Earth), genetically mess with the local fauna to eventually create Humanity, create the Mayan civilization, and use its prophecies to foretell the end of the world which will happen when the bad alien's ship gains enough power to reactivate, on [[MayanDoomsday December 21, 2012]].]]
* The second book of ''Literature/EmpireOfTheAnts'' reveal Ants were responsible for the extinction of the Dinosaurs.
* In L. Jagi Lamplighter's ''Literature/ProsperosDaughter'', Miranda, commenting on the winds (who work for her), mentions that the extinction was ''not'' caused by the meteor hitting. It is only logical that people don't know the truth, though; there is a secret order that censors magic out of history, so that people will resort to science rather than evil spirits to improve their lives.
* Creator/RobertJSawyer's ''Literature/EndOfAnEra'' features time travelers who pop into the end of the Cretaceous to discover that Earth's gravity was purposefully modified by Martians in order to breed biological war machines (aka dinosaurs) against a fifth planet in the Solar System orbiting between Mars and Jupiter. [[spoiler:In the end, the scientists cause the KT Extinction Event by turning off the antigravity generators, simultaneously killing off both the dinosaurs and the Martians. Essentially, phlebotinum created the dinosaurs. Taking it away killed them.]]
* In ''Literature/CaptainUnderpants and the Revolting Revenge of the Radioactive Robo-Boxers'', [[spoiler:Tippy Tinkletrousers]] not only killed the dinosaurs, but also caused the Ice Age ''and'' created the Big Bang.
* David Brin's ''Existence'' posits that a war between alien probes that took place millions of years in the past caused an object to fall to Earth and trigger the Cretaceous extinction. Whether it was an actual alien probe, a piece of rock flung by one of the probes at another, done on purpose or by accident, is not known.
* In the ''Literature/{{Tunnels}}'' series, [[spoiler:a Styx Phase killed off the dinosaurs, presumably triggering an environmental collapse that spelled doom for millions of other organisms that also went extinct.]]
* In ''Literature/{{Protector}}'', by LarryNiven, there's a delightful little throwaway line about the Protectors killing the dinosaurs and other megafauna.
* In the ''Literature/ZacharyNixonJohnson'' series, an alien race called the Gladians killed the dinosaurs because they were "getting uppity". They threaten to do the same to humanity in ''The Doomsday Brunette''.
* Played with in ''Literature/TheLivesOfTao''. The Dinosaurs were killed off by a large comet/asteroid-like object impacting the earth. It just that the object in question was [[AncientAstronauts a damaged alien spaceship crash landing on our planet]].
* ''Literature/TheQContinuum'' trilogy reveals that Q himself accidentally sent the iridium meteor to Earth during a titanic battle between members of the Continuum and four powerful beings (0, [[Recap/StarTrekS3E4AndTheChildrenShallLead Gorgan]], [[Recap/StarTrekS3E7DayOfTheDove (*)]], and [[Film/StarTrekVTheFinalFrontier The One]]). One of the latter supercharges the meteor and hurls it at female!Q. Fearing for her life, Q hurriedly creates a temporary wormhole in the meteor's path, not thinking about where the rock ends up. After the battle, the Continuum learns about the destruction of the dinosaurs and, as punishment, charges Q with protecting Earth and any lifeforms that evolve on it.
* In ''Dark Matter and the Dinosaurs'', Lisa Randall presents the hypothesis that dark matter (the source of gravity that holds galaxies and galactic clusters together, observable only due to its gravitational lensing, making it one of the Phlebotina of astrophysics) deflected the asteroid responsible for the dinosaurs' extinction.

[[folder:Live-Action TV]]
* According to the ''Series/DoctorWho'' serial ''Earthshock'', the "meteor" that wiped out the dinosaurs was actually a far-future human spaceship which had been hijacked by the Cybermen and accidentally sent millions of years back in time (they had intended to crash it into the Earth in its own era to wipe out humanity). [[spoiler:Which had Adric on board]]. %% The identity of the villains of this serial has long since passed ItWasHisSled territory.
* ''Franchise/PowerRangers''
** ''Series/PowerRangersDinoThunder'' plays an odd twist on it - it ''was'' just a random asteroid, but it became a ''magical'' asteroid, which shattered into [[MineralMacguffin mineral macguffins]], which then imprinted on the dinosaurs (ensuring that they could plausibly be used to bring the dinosaurs back).
** As of ''Series/PowerRangersDinoCharge'', it looks like the asteroids weren't so random. An evil bounty hunter was in orbit over the planet with a large haul of asteroids he'd collected. But then his ship got bombed, causing them to break away and fall...
* ''Franchise/SuperSentai'' has had no less than ''five'' possible fates for the dinosaurs.
** ''Series/KyoryuSentaiZyuranger'' gives us Bandora, whose son was killed by a dinosaur. She sold her soul to the devil to gain the power to destroy the dinosaurs. When she was sealed, only two dinosaur eggs remained, and her main goal after being revived is to destroy those two eggs.
** ''Series/BakuryuuSentaiAbaranger'' holds it that a meteorite did hit Earth but ''didn't'' kill the dinosaurs, instead splitting the Earth into two parallel universes; one where humans evolved and rule the earth and one where dinosaurs did.
** ''Series/EngineSentaiGoOnger'' has the villains reviving the monster who destroyed the dinosaurs.
** The BigBad of ''Series/GoGoSentaiBoukenger'''s movie ''also'' killed the dinosaurs.
** ''Series/ZyudenSentaiKyoryuger'' has the Deboss Legion exterminate the dinosaurs and try to do the same to humanity, with three recurring monsters having directly killed the dinos: an Ice Age one, a disease-themed one, and a meteor one. They haven't regained their full power yet - the Ice Age monster was even first episode cannon fodder - but they're still usually a step up from a normal MonsterOfTheWeek.
* Baldrick's unwashed underpants. (From the short film shown at the Millenium Dome, ''[[Series/{{Blackadder}} Blackadder Back and Forth]]'')
* ''Series/StarTrekVoyager'' suggests one of them evolved, built spaceships and just outright left. The rest? Probably SOL.
** The ExpandedUniverse intimates that Q killed the dinosaurs after using a spatial rift to divert an asteroid hurled at him by another omnipotent being. He would later be charged with overseeing the rebuilding of Earth's ecosystem, including nurturing any sentients that might arise. He left a gift for us in the form of the [[EverythingsBetterWithPlatypi platypus]].
*** Bonus points for explicitly stating that the asteroid had iridium in it, which was determined to be true for the dinosaur-ending asteroid.
*** In another novel he claimed that he gave humanity fire as a joke (predictably, the first thing they did was light one another on fire and laugh hysterically). The other Q were angry, as this made humans dominant instead of cockroaches, and punished him in the way we know from the Prometheus myth.
* ''Series/TheXFiles'' two-parter "The Sixth Extinction" briefly skirts the topic of what killed the dinosaurs, suggesting that AncientAstronauts visited Earth five times before, destroying its dominant species and introducing new ones. The mammals (including us humans) are the latest masters of earth, introduced after the "fifth extinction"--a.k.a. the Dinosaur Extinction Event. And our own time to go is [[JustBeforeTheEnd nearing fast]].
* On ''Series/TheWalkingDead'', Eugene suggests that the ZombieApocalypse may have killed the dinosaurs. He doesn't think it's what happened, [[RuleOfCool but he likes the idea]].

* ''Music/{{Ayreon}}'': "We vanquished the dinosaurs with the trajectory of a child's lost meteorite."
* The 1980 vintage song "Die Dinosaurier" by [[http://de.wikipedia.org/wiki/Lonzo_%28Geiger%29 Lonzo]] (page is in German) plays with the flood myth by having the dinosaurs be simply too ''big'' to fit into Noah's ark and therefore not allowed to board.

[[folder:Myths & Religion]]
* ''Literature/TheBible'' doesn't mention dinosaurs, but Creationists have come up with a number of {{Fanon}} theories to try and reconcile the book of Genesis with paleontology:
** Dinosaurs died from Noah's Flood; most from the flood itself (along with every other species), and the few left that were on the ark couldn't handle the resulting climate changes and/or the die-off of a food source that didn't survive the flood or climate changes.
** The seven "days" of creation are actually a metaphor for seven much longer eras, and dinosaurs went extinct somewhere in that timeframe.
** When the Earth was cursed due to the Fall of Man, dinosaurs were corrupted and made AlwaysChaoticEvil. (This doesn't explain where they went, though...)
*** Likely the [[DinosaursAreDragons dinosaurs became dragons]] and knights hunted them all down.
** Dinosaurs never existed and their remains were placed by [[GodAndSatanAreBothJerks either God or Satan]] to test the faith of the less committed Christians.
** And of course; dinosaurs are still alive and that’s why we have Nessie and Mkele Mbenbe

[[folder:Tabletop Games]]
* In the ''TabletopGame/DarkMatter'' setting, while not specifically mentioning the dinosaurs, numerous historical disasters, and also times of prosperity, are tied to the ebb and flow of dark matter, used as the setting's AppliedPhlebotinum.
* One of three alien races who commonly interact with Earth humans in TabletopGame/ConspiracyX are the "Saurians", mysterious reptilian aliens with many forms who want to take over. [[spoiler:They are actually the dinosaurs, they owned the planet long before us, and they had extremely advanced technology. What finally did them in was an experimental FTL drive that failed in the middle of a huge space civil war, trapping just about every single Saurian still alive at the time within the temporal stasis field around an artificial black hole. It took the black hole 65 million years to shrink to the point that some Saurian ships have managed to free themselves of its pull, and the crew members have discovered, to their great dismay, that while they were gone... all kinds of things happened to their planet.]]
* ''TabletopGame/{{Nobilis}}'' features a vignette where a representative of Heaven, an aspect of perfection and purity, descends onto Earth for the first time... and then a dinosaur craps on him. So they have to go. [[AGodAmI This is par for the course in Nobilis]].
* Implied by some of the background fluff in ''TabletopGame/Warhammer40000''. The Necron/Old One conflict known as The War In Heaven occurred around the time the dinosaurs died out and the Necrons/C'Tan are known to have come to Earth in the distant past.

[[folder:Video Games]]
* ''VideoGame/ChronoTrigger'' has the dinosaurs being killed off because of the fall of [[OutsideContextProblem Lavos]]. The world isn't Earth, but it's [[AllPlanetsAreEarthlike similar enough]] that this event occurred 65 million years ago like the actual extinction of the dinosaurs. For contrast, the rulers of said dinosaurs were [[TheReptilians bipedal and sentient]]. Lavos happened to land on their capital, killing the majority of them, and the resulting Ice Age finished the job.
* ''VideoGame/FinalFantasyVII'' hints at this trope. There are enormous, dinosaur-like bones on the Northern Continent. You even run down one's spine in the final dungeon, which is where a cosmic horror meteor thing hit.
* ''VideoGame/XComTerrorFromTheDeep'' explained away the asteroid a crashed colony ship.
* The [[ArtifactOfDoom Black Marker]] from ''Franchise/DeadSpace'' lore was found in the Chicxulub crater and is about 65 million years old. No way that's a coincidence.
** Technically it is a coincidence, but only in-universe. The [[spoiler:Brethren Moons]] fire off their Markers randomly with the intent of ''seeding'' life forms, not wiping them out. Humans didn't discover it until the year 2214.
* One of the missions in ''[[VideoGame/{{Scribblenauts}} Super Scribblenauts]]'' is to cause the dinosaurs to go extinct without asteroids or weapons. You have many options: plague, flooding, drought, a black hole, {{God}}, [[Franchise/CthulhuMythos Cthulhu]]...
* Inverted in ''VideoGame/FossilFighters'', where it's revealed dinosaurs [[spoiler:were actually alien prehistoric creatures introduced to Earth by the Dinaurians, a species ascended from them, in an attempt to recreated their dangerously close to extinction species on Earth. The dinosaurs' extinction foiled their plan, and they awoke too late to rectify it.]]
* In ''VideoGame/PathwaysIntoDarkness'', the dinosaur-killing asteroid strike was the work of an EldritchAbomination that is about to wake up.
* The Chimeras of ''VideoGame/{{Resistance}}'' are either responsible for the creation or destruction of Dinosaurs, while the creators of Grey Tech are responsible for the other part. Unfortunately, the Grey Civilization and their Cloven human successors become an AbortedArc.
* ''VideoGame/TheDayTheWorldBroke'': Osgood Jr., better known as Ozzie, a technician at the World Works, is responsible for the dinosaurs' disappearance. He accidentally started a cataclysm that killed some of them, and judged the best way to stop it was to throw the vents into reverse. In the process most of the remaining dinos, and some other Cretaceous critters, were sucked through into the core. Metals in the core wound up in their digestive systems, turning this first generation's hatchlings into biomechanical Mechanimals, who inhabit the core to this day.
* In ''VisualNovel/{{Demonbane}}'', Demonbane and Liber Legis begin randomly teleporting across time and space during their final battle. Eventually they end up back at Earth... 65 million years ago. Liber Legis does a super-charged body slam on Demonbane from orbit, causing both HumongousMecha to slam into the Earth at extreme speed... in the area that would eventually become known as the Yucatan Peninsula.
* ''VideoGame/{{Darkstalkers}}'' has a character, Huitzil, who was part of a series of robots made by Pyron to wipe the Earth clean of life. This was 65 million years ago. As such, they slaughtered the dinosaurs and went into hibernation, though they didn't realize they'd missed the lesser mammals...

[[folder:Web Comics]]
* In ''Webcomic/TheInexplicableAdventuresOfBob'', the dragons had an atomic-level civilization during the late Cretaceous, which ended with a nuclear war using "iridium bombs" (explaining the iridium layer attributed to an asteroid strike). The remaining survivors reverted to a pastoral existence until [[HumansAreBastards those wacky knights showed up]].
* ''ComicStrip/ThePerryBibleFellowship'': In [[http://www.pbfcomics.com/55 one strip]], the psychic dinosaurs brings the end on themselves.
* In ''Webcomic/EightBitTheater'', Black Mage [[http://www.nuklearpower.com/2004/06/17/episode-430-very-long-range/ Evilwizardington]]'s CriticalFailure does it.
* One ''Webcomic/DinosaurComics'' [[http://www.qwantz.com/index.php?comic=997 guest comic]] has God throwing a meteor at the Earth after one too many complaints by a certain T. rex.
* According to ''Webcomic/RavensDojo'', Jesusaurus absolved them of their sins and they were all taken into heaven by the Rapture. Except for the sinful T-Rexes, doomed to burn eternally in engines built by primates.
* According to ''Webcomic/HappleTea'', [[UsefulNotes/{{Mormonism}} Joseph Smith]] [[http://www.happletea.com/comics/patently-false/ killed the dinosaurs]].
* In ''Webcomic/SaturdayMorningBreakfastCereal'' the dinosaurs were a space-faring civilization, then one guy who was moving an asteroid [[http://www.smbc-comics.com/index.php?id=3741 messed up.]]

[[folder:Web Original]]
* [[WebVideo/AtopTheFourthWall Linkara]] turned them into underwear.
* It wasn't a meteor that wiped out the dinosaurs, it was [[WebVideo/YuGiOhTheAbridgedSeries Tristan Timothy Taylor]]...
* ...or maybe it was Red from ''WebAnimation/DickFigures''.
* Alternatively, in ''WebAnimation/{{Asdfmovie}}'', mine turtles [[https://www.youtube.com/watch?v=DI5_sQ8O-7Y killed the dinosaurs]].
* [[Machinima/FreemansMind Gordon Freeman killed the dinosaurs.]] Or rather, merely boasts that he did.
* According to [[Wiki/SCPFoundation SCP-]][[http://scp-wiki.wikidot.com/scp-1050 1050]], a race of {{Eldritch Abomination}}s known only as '[[NamesToRunAwayFromReallyFast The Destroyers]]' were responsible for the extinction of the dinosaurs, as well as ''virtually every other mass extinction'' in Earth's history.
* When discussing the several different MarvelUniverse explanations the people at ''[[Website/LiveJournal scans_daily]]'' came up with this:
-->It was a dark day. Five separate crisis happened at once, overwhelming even Captain Stegasaurus, the Mighty Velocirapthor, and Iron Rex, collectively known as the Dinovengers.\\
The dinosaurs stood no chance.

[[folder:Western Animation]]
* One episode of ''WesternAnimation/TheEmperorsNewSchool'' has Yzma combine a time machine, invisibility device and an evil MP3 player (it only plays disco music!), which is then lost in time. It becomes a BrickJoke at the end of the episode when Kuzco flips the show to a documentary about dinosaurs, who begin dying off from the disco music.
* In ''WesternAnimation/SamuraiJack'', Aku falls to Earth in the form of a meteorite. Guess who happens to be in the blast radius when Aku hits.
* An example very similar to ''Samurai Jack'' is with [[spoiler:The Lich]] from ''WesternAnimation/AdventureTime'', as it's strongly implied that [[spoiler:his essence arrived from a possessed comet millions of years ago and well...]]
* ''WesternAnimation/{{Futurama}}'', Fry encounters a giant brain that knows ''everything''. The result is the page-quote above.
* In ''WesternAnimation/TheFairlyOddparents'', Wanda claims to have wiped out the dinosaurs the last time she "went bad." But she didn't -- it was [[NoCelebritiesWereHarmed Sylvester Calzone]] doing a species-wide NoHoldsBarredBeatdown.
-->'''Calzone:''' Uh, you're da species, and I'm da extinction!!
* In the two-part ''WesternAnimation/BionicSix'' episode "Back to the Past", the protagonists are sent back to find out what killed the dinosaurs. Naturally, they end up getting involved with it. The dinosaurs died from the radiation that leaked from the weapon taken to the past by villains sent there [[{{Irony}} to obtain the power that killed them]].
* ''WesternAnimation/FamilyGuy'''s answer: I don't know, but they died [[ADateWithRosiePalms because you touch yourself at night]].
* ''WesternAnimation/AmericanDad'': "That's just preposterous, dinosaurs going extinct. They were just forced underground during the [[HollywoodHistory last human-dinosaur wars]] and we occasionally find their bones sometimes".
** Another episode has Stan die and force his way into {{Heaven}}, where he finds {{God}} playing with some toy dinosaurs in His office.
--->'''God:''' These guys are awesome. Why'd I ever send them to Mars?
* In ''WesternAnimation/JonnyQuestTheRealAdventures'', the dinosaurs were wiped out by an incredibly powerful nuke, which an insane cult leader intended to use to wipe out humans instead. The heroes use a time machine to send it back 65 million years.
* There was an episode of ''WesternAnimation/TheRenAndStimpyShow'' where Wilbur Cobb told the titular characters several ridiculous theories on how the dinosaurs died, including "they thought they were Franchise/{{Superman}}, and jumped off the roof." As he's dragged off by museum security, he claims that ''he'' was the one who killed the dinosaurs.
* In a time travel-themed episode of ''WesternAnimation/IAmWeasel'', the dinosaurs [[NakedPeopleAreFunny laughed at I. R. Baboon's red butt]] so hard that they fell off the world (which was flat at that time period for some odd reason) and to their deaths. Weasel calls him out at first, but then realizes that dinosaurs are supposed to go extinct and instead takes this as a sign that [[YouAlreadyChangedThePast Baboon was destined to correct history]].
* In one of the "Terrible Thunder Lizards" segments in ''WesternAnimation/EekTheCat'', the dinosaurs became extinct because of giant robot clown the dinosaurs unleashed. In another episode, they become extinct because a sitcom was keeping them too distracted to do anything about the asteroid.
* In ''ExtremeDinosaurs'', the cataclysm that caused the dinosaurs to go extinct was caused by [[BigBad Bad Rap]], a mutated raptor, using an alien WaveMotionGun in a fight. Since the weapon was conceived by aliens from a different dimension, it wasn't adapted to be used on Earth, and ended up causing the cataclysm instead of merely killing the protagonists like initially intended.

[[folder:Real Life]]
* While it's pretty certain that there ''was'' an asteroid impact that occurred right around the Cretaceous–Paleogene extinction, there is a significant amount of debate as to whether this impact was the primary cause of the extinction, a trigger that released a [[SealedEvilInACan bigger disaster]] such as an underground gas bubble or super volcano, one of a number of nasty things that were going on in the biosphere around that time, or pretty much unrelated to the extinction itself.
** Of course dinosaurs aren't actually extinct, they survived in the form of birds. Next time you eat [chicken/turkey/duck/[[BreadEggsMilkSquick bald eagle]]], you will be eating an evolved dinosaur. What most people think of as dinosaurs are actually non-avian dinosaurs, which are quite extinct.