Some writers think Everything's Better with Dinosaurs, but in this case dinosaurs were not brought back with cloning technology nor due to time travel, non-avian dinosaurs just survive the mass KT extinction up until modern (or even future) times. As dinosaurs are pretty well known, the in-universe explanation for they to be mostly undiscovered all this time often involves a Lost World somewhere in the far and unexplored regions of Earth, or even below the surface of the Earth, where dinosaurs manage to remain untouched. In some cases they evolved into something new, often The Reptilians or Ultraterrestrials. Although this trope uses the term dinosaur, due to Artistic License – Paleontology it is not uncommon that non-dinosaur prehistoric beasts may also be included as examples, like the Plesiosauria and the Pterosauria. But remember, dinosaurs and cavemen living together was a common trope in old media, but is more a case of Critical Research Failure than the intentional use of this trope. A Sub-Trope of Species Lost and Found, very commonly use in works with Our Cryptids Are More Mysterious, compare with Stock Ness Monster (often portrayed as a surviving plesiosaur) and Dinosaurs Are Dragons (for the idea that dinosaurs actually inspired the dragon myth). Domesticated Dinosaurs maybe result if people manage to tame them. Overlaps Medieval Prehistory in works that use a real medieval setting (as opposed to a medievalish fantasy land). Compare Not So Extinct, which is a similar concept applied to fantasy creatures.
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Anime & Manga
- In Dragon Ball, dinosaurs are seen freely roaming around the modern day world, despite Beerus claiming to have wiped them out the last time he visited Earth. Some of them are anthropomorphic.
- One episode of Sailor Moon has Chibiusa befriending a living baby plesiosaur.
- T-REX na Kanojo is set in a world where dinosaurs, pterosaurs and marine reptiles evolved into human-creatures and live alongside humans in society.
- Several episodes of the Pokémon anime have dealt with the cast encountering living examples of normally extinct fossil Pokémon. Sometimes it's explained by cloning or time travel, but other times it doesn't get any explanation at all.
- In the Marvel Universe, dinosaurs survived in a Lost World, hidden in Antarctica, known as the Savage Land.
- In the DC Universe, dinosaurs survived on Dinosaur Island. This was originally the setting for The War That Time Forgot series, and has subsequently provided the setting for countless stories allowing superheroes to battle dinosaurs.
- In The Warlord, the Lost World of Skataris is overrun by a variety of prehistoric creatures from all geological eras; most notably dinosaurs.
- The comic adaptation of the Red Nails short story in the Conan the Barbarian comic book also features Conan fighting a surviving dinosaur.
- Dilbert introduces dinosaur characters after Dilbert proves mathematically that it's impossible for the dinosaurs to have become totally extinct. Turns out they've just been hiding this entire time. (Incidentally, Dilbert's conclusion is approximately correct: some dinosaurs survived by, more or less, evolving into birds)
Film - Animated
- The Good Dinosaur takes place in a world where the dinosaurs never went extinct and developed a primitive society, while humans remained wild, feral creatures.
- In Ice Age 3: Dawn of the Dinosaurs, Mesozoic creatures such as dinosaurs survived the K-T extinction in a Lost World beneath Earth's surface, which the protagonists, a gang of prehistoric mammals, visit.
Film - Live Action
- Baby: Secret of the Lost Legend: A couple of young scientists discover the last remaining sauropods in the African jungle. Based on the myth of Mokele-mbembe, a Real Life African cryptid thought by locals to be a surviving race of brontosaurs.
- The Beast of Hollow Mountain starts off as a Western film, then makes an abrupt Genre Shift into a monster movie when the creature killing livestock around a small Mexican town is revealed to be an Allosaurus. It beat the more famous Valley of the Gwangi to the "cowboys vs. dinosaurs" concept by a few years.
- Godzilla and other of his fellow Kaiju have many origins, and sometimes are implied to be surviving dinosaurs or related to them. But the most straight use of this trope was in Godzilla vs. King Ghidorah, where Godzilla's origin is retconned as a surviving dinosaur living in an Island of the Pacific that interrupted an American-Japanese battle. Later mutated due to radiation from a hydrogen bomb test on the island.
- King Kong (1933) and its sequel Son Of Kong shows Skull Island, an island in the middle of the Pacific with giant gorillas and living dinosaurs. The remake King Kong (2005) kept this idea.
- The Last Dinosaur: Famous B-Movie about an Egomaniac Hunter discovering surviving dinosaurs somewhere deep under the North Pole, taking a crew there to hunt the ultimate hunter (aside from him): the last Tyrannosaurus rex.
- Super Mario Bros.: After the meteorite's strike 65 million years ago dinosaurs survive in a separated dimension created by the impact and evolved into Human Aliens.
- The Valley of Gwangi: In The Wild West a group of cowboys discover the eponymous valley where dinosaurs somehow survive into the modern age.
- In Anonymous Rex some dinosaurs survived the asteroid and evolved into forms that could cram into latex human suits, Hard Light Holographic Disguises in the Sci-fi channel film.
- Probably the Ur-Example is Jules Verne's Journey to the Center of the Earth, where three 19th century explorers witness a plesiosaur and an ichthyosaur fought each other in a deep subterranean lake.
- Arthur Conan Doyle's The Lost World is about a group of explorers discovering living dinosaurs and other prehistoric fauna (including ichthyosaurs, Megaloceros and Toxodon) inhabiting a forested plateau in the South American jungle.
- North of the Dragonlands by Stephen Dedman is a medieval fantasy in which the fantastic elements are unfamiliar non-magical things that the characters are trying to understand in terms of familiar concepts; the "dragons" are dinosaurs and pterosaurs that have somehow survived from prehistoric times.
- The Pellucidar series by Edgar Rice Burroughs has a similar premise, with dinosaurs surviving inside the Hollow Earth known by its inhabitants as Pellucidar.
- Robert J. Sawyer's Quintaglio Ascension series has the eponymous Quintaglios, evolved tyrannosaurs living on the moon of a gas giant, to which they were transplanted from Earth by a godlike entity millions of years ago. They farm herbivorous dinosaurs for food, most of which do not seem to have changed much from their Earth days.
- Doc Savage: In The Land of Terror, Doc and his friends follow a corpse-laden trail to a prehistoric crater and mortal combat with dinosaurs!
- Red Nails, the last short story of Conan the Barbarian writen by Robert E. Howard starts with a dinosaur (named in-universe as dragon) attacking Conan and company.
Live Action TV
- In the Chilean puppet show 31 Minutos, one of the songs of the show is Dinosaur Anacleto, the only surviving dinosaur on the Earth that even became a showbiz personality. The song is in general a melancholic one, since the main theme of the song is how lonely Anacleto is because all his dinosaur friends are dead and he wants friends again.
- Dinosaurs surviving to modern times and developing sapience is the central plot behind the TV show Dinosapien.
- Recurring culture the Silurians/Sea Devils/Homo reptilianote in Doctor Who are sentient, vaguely-human-shaped dinosaurs from Earth. In order to escape an expected planetary catastrophe that never materialised, they either left to colonise other planets or went into hibernation deep underground. There have been several violent confrontations between them and the humans who evolved millions of years later and took over "their" planet. In some stories, they even have pet non-sentient dinosaurs.
- The Sliders episode "Dinoslide" shows a parallel world where dinosaurs never became extinct, becoming an endangered species.
- The Voth in Star Trek: Voyager are descendants of hadrosaurs that left Earth after discovering space travel, reaching the other extreme of the Galaxy, or Delta Quadrant. But, except for some scientists, they are totally unaware of their Earthly origins, as their religion says they are natives of that region of space.
- Sir Arthur Conan Doyle's The Lost World, a very loose adaptation of Doyle's book, has dinosaurs (and humanoid Reptilians) living in the eponymous Lost World.
Religion and Myths
- Some Creationists believe that dinosaurs survive up to historical times and co-exist with modern humans. Some even think that dinosaurs still exist and are the origin of several cryptids like the Loch Ness Monster.
- As mentioned in the film section, some cryptids around the world are thought to be living dinosaurs. The first one was probably the Loch Ness Monster. Africa has several, especially around the Congo region with the Mokèlé-mbèmbé (possibly a surviving sauropod) as the most famous one. There's also the Ropen (an alleged living pterodactyl) in Indonesia. Most modern cryptozoologists do not take these claims seriously and, although they do believe some of these animals could be undiscovered species, most of them do not think they are literally [non-avian] dinosaurs.
- Tomb Raider:
- The first game and its remake has a T. rex and raptors living in a lost valley in Peru.
- Tomb Raider II has a pair of T. rex living in a secluded area near the Great Wall of China.
- Tomb Raider III once again features raptors and a T. rex on a South Pacific island, this time being joined by flocks of Compsognathus. The expansion pack has Pteranodons living in a secluded volcanic area.
- The populace of Elmore in The Amazing World of Gumball includes fully-sized tyrannosauruses (Tina Rex and her father) and an undersized, anthropomorphic sauropod (Molly).
- A surviving Pteranodon appears in the Jonny Quest episode "Turu the Terrible".
- The Legend of Tarzan adapts elements from the Pellucidar book series: there is a Lost World Beneath the Earth under the jungles of Africa, where Tarzan and his friends encounter living dinosaurs.
- In OK K.O.! Let's Be Heroes, small dinosaurs roam around like woodland critters, and pterodactyls fly around like pigeons.
- Tiny Toon Adventures: Buster adopts a baby Tyrannosaurus rex whose egg he found in a cave in the episode, "Rock 'N' Roar".
Buster: I never did buy that extinction theory.
- Marvel's Savage Land where dinosaurs survive to modern age in the middle of Antartica is featured prominently in the second season of X-Men, especially the two-parts season finale.
- DC's Dinosaur Island appears in episode "Four Star Spectacular!" of Batman: The Brave and the Bold.
- A pterosaur version appears in The Secret Saturdays—one of the Saturdays' adopted cryptid children is a late-surviving Tropeognathus named Zon. She's frequently misidentified as a Pteranodon though.
- A non-dinosaur example occurs in the SpongeBob SquarePants episode "Lost and Found" where SpongeBob discovers a Lost World in the Krusty Krab's Lost and Found, and the Mesozoic reptiles he encounters there are a Tylosaurus (which he rides on) and a Tanystropheus.
- The Redac's Matthewsaurus is still alive in the present day. The Thierrysaurus also survived, but as a living fossil. Several other unnamed dinosaurs also exist.
- Birds are dinosaurs. It's now accepted by most biologists that birds are simply a group of flight-capable theropods that survived the mass extinction, especially now that it's been discovered that there were a large number of dinosaur species that had feathers.