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Tough Armored Dinosaur

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The king of the dinosaurs gets a club invitation.
"Clankity Clankity Clankity Clank! Ankylosaurus was built like a tank!"
Jack Prelutsky

Similarly to ceratopsians, the stegosaurs and ankylosaursnote  have a reputation of being tough prey for big theropods, often being referred to as the "tanks" of the dinosaur world.

Stegosaurs and ankylosaurs (especially the former) are also a frequent subject of Dumb Dinos, the fact that Stegosaurus is often stated to have one of the smallest brains among dinosaurs has contributed to this reputation.

Popular portrayals of armoured dinosaurs vary a lot in personality, but they tend to default towards being portrayed as tough, aggressive, and none-too-bright, as well as having having large appetites. Occasionally, they will be portrayed as Boisterous Bruisers. In short, they have a reputation as Dumb Muscle.

Compared with ceratopsians, stegosaurs tend to appear more of a sort of Badass Gentle Giant dinosaurs — mostly placid and nonviolent, but still able to defend themselves if necessary. Ankylosaurs usually share the same treatment but tend to be more aggressive and temperamental than stegosaurs.

While stegosaurs can be either solitary or sociable among each other, ankylosaurs are usually depicted as aggressive, territorial loners.

Fictional stegosaurs are usually either Stegosaurus or its smaller, spikier relative Kentrosaurus, whilst fictional ankylosaurs will usually be Ankylosaurus itself, or occasionally Euoplocephalus, Edmontonia, and Polacanthus.

Like ceratopsians, ankylosaurs and stegosaurs will often be depicted facing off against the resident big theropod of their time period — for example, Stegosaurus is often shown battling Allosaurus, while Ankylosaurus often does this with Tyrannosaurus rex (and so does Stegosaurus on occasion, for that matter). In older portraits, armored dinosaurs were usually depicted as too slow to defend themselves against carnivores, particularly Stegosaurus, but after the "Dinosaur Renaissance" occurring in the 1970s, they are more than likely to win fights. This has resulted in the pendulum swinging in the other direction to a degree, with ankylosaurs and to a lesser-degree stegosaurs sometimes being portrayed as so heavily armored and armed they were immune to predators or by far the most dangerous of all the herbivorous dinosaurs. Neither of these scenarios are particularly true in light of fossil evidence and mechanical tests showing theropods were quite capable of biting through the armor, meaning actual confrontations between the two groups had diverse outcomes.

See also Beware My Stinger Tail, often applied to both stegosaurs and ankylosaurs. Compare with Temper-Ceratops, Gentle Giant Sauropod, Aquatic Hadrosaurs, Social Ornithopod, and Headbutting Pachy, which are other plant-eaters of the dinosaur world. For more information about depictions of the Stegosaurus in popular culture, see this link.


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  • In an early 1970s commercial for Cocoa Pebbles cereal, a factory is depicted where Fred Flintstone sends the cereal down to Barney Rubble via a Stegosaurus that acts as a conveyor of sorts. The spike motion is even reversible, as shown when Fred tries to get at Barney for eating the product rather than putting it into boxes.

    Anime and Manga 
  • Digimon Adventure 02:
    • Ankylomon being based on the Ankylosaurus has strong armor that protects him attacks from higher-level Digimon, although he can't withstand them completely. When Knightmon hits him repeatedly with its BFS, Ankylomon doesn't suffer any injuries from it, but it still hurts him nonetheless. While the Jogress Evolution with Angemon, named Shakkoumon, completely loses all of Ankylomon's dinosaur traits, Shakkoumon retains Ankylomon's tough defense.
    • Despite being based and named after the tortoise, Tortamon looks like a yellow dinosaur with a rocky spikes on its back that it can fire at the enemy, and it barely resembles a tortoise.
  • Digimon Data Squad: BioStegomon has large blades on its back, which it can fire at the enemy. The real Stegomon naturally has those blades, too.
  • Dinosaur King naturally has several ankylosaurid and stegosaurid dinosaurs show up. The one who stands out most is Tank, the Alpha Gang's Saichania who uses her tail club in addition to her Earth-based special attacks.
  • You Are Umasou: Umasou the Ankylosaurus naturally starts off as naive about the world's dangers, due to being recently hatched, but teachings from his adoptive Tyrannosaurus rex father Heart causes him to gradually become tougher and wiser.

  • Jurassic Fight Club has one Stegosaurus stuck in a swamp that nonetheless manages to kill a predatory Allosaurus with its thagomizer, hitting it in the head to death when it seemed already hopeless and destined to die for starvation. The series also has a Gastonia fighting against a giant Utahraptor, winning the battle by using its stingy tail as a weapon.
  • Planet of Dinosaurs shows a sleeping Stegosaurus in an arid hilly landscape, and another specimen walking lonely in the background of the scene. The sleeping stego is accidentally awakened by the human time traveller and reacts instinctively by hitting some scrubs with its tail, but then walks away peacefully. It's described by the host as a smart animal despite its "apricot"-sized brain.
  • Walking with Dinosaurs: Stegosaurus and Ankylosaurus appear in the second and sixth episodes. Both are portrayed as large, dim-witted, aggressive herbivores that will attack anything that they see as a threat, and are depicted as facing off against the setting's large theropod. This is largely averted with the Polacanthus, who are portrayed as more docile.

    Fan Works 
  • Prehistoric Earth: Stegosaurus and ankylosaurus are amongst the animals rescued for the titular park, and they both prove animals that the park staff very much wish to not get on the bad side of.
  • Prehistoric Park Reimagined features multiple stegosaurs and ankylosaurs amongst the prehistoric animals rescued, with several of them proving very tough and easily capable of being dangerous if provoked (with the stegosaurus in particular being shown to behave very similarly to modern day rhinos).

    Films — Animation 
  • Fantasia: A Stegosaurus fights and loses a battle against a Tyrannosaurus rex because it's too slow-running, while ceratopsians and hadrosaurs, both faster, flee the predator. The stego, however, before losing and dying, hits and wounds the rex with its tail. It's shown as a sluggish creature unable to run because of its stubby legs, but this is due to the film being made in 1940.
  • Ice Age: Dawn of the Dinosaurs:
    • An Ankylosaurus is amongst the dinosaurs inhabiting the hidden subterranean world full of dinosaurs. It's incredibly aggressive and ill-tempered and tries to attack the gang, which only loses it thanks to Ellie managing to trick a nearby Brachiosaurus into providing them a means to escape. Despite its aggression, it's still seen cowering in fear of Rudy the Baryonyx.
    • The other armored dinosaur seen inhabiting the hidden world is Kentrosaurus, which are among the dinosaurs menacing the herd after they escape from the above-mentioned Ankylosaurus.
  • The Land Before Time:
    • Spike, one of the five main dinosaurs, who serves The Big Guy of the group: mute and lazy, but still strong and altruistic. He's a Stegosaurus with big head and small undersized plates and spikes like real-life baby stegosaurs. He's also a Big Eater, and a Kind Hearted Simpleton. But in the trip toward the Great Valley he reveals himself to be courageous and tough, especially in the scene of the first film in which he pulls tenaciously a big rock with his head together with Littlefoot, to make the rock falling down and hopefully hitting the head of "Sharptooth" below (the villainous T. rex who has pursued them throughout the journey).
    • The original movie also contains an aversion of this trope in the form of Rooter, an elderly Scolosaurus; at first glance, he appears menacing, but immediately reveals himself to be wise, gentle, and kind-hearted toward poor Littlefoot (who had lost his mother in the previous scene). Rooter is very slow-moving, walking like a giant tortoise, and has a worn beak, a wrinkled neck, thick eyebrows, and only one tooth left, revealing he's very old.
    • The sequels zig-zag this with Mr. Clubtail the Ankylosaurus. At times he is gruff and gluttonous, but other times he can be friendly and helpful.
  • Url from Dinosaur is an aversion. He acts more like a playful puppy than an armored juggernaut, and when danger threatens he's much more likely to cower and hide than fight.

    Films — Live-Action 
  • Godzilla: Anguirus is an ankylosaur-like Kaiju who is Godzilla's first adversary and then becomes his closest ally in the later Showa films. He is noted for his tenacity and toughness, meaning that while he isn't as physically powerful as some of his other kaiju co-stars, he can endure quite a beating and is fearless in battle.
  • Jurassic Park:
    • The Lost World: Jurassic Park has Stegosaurus. They appear rather aggressive toward the humans to protect their young at a first glance, but this is only because they wrongly believe to be menaced by them, or because they feel themselves disturbed by the humans, while the latter are actually friendly toward the animals, though wary because of their size and number (stegos here are herd animals).
    • Jurassic World: The Ankylosaurus is notoriously one of the few herbivores that visitors cannot interact with at the petting zoo since it is moderately aggressive. One of them later fights the Indominus rex and manages to bash her face with its tail, before the predator gets the upper hand by flipping it on its back. A big carnivorous dinosaur overturning an ankylosaur to bite its soft underbelly is a common sight in paleo-art.
  • King Kong (1933): A Stegosaurus is amongst the prehistoric animals encountered. Acting similarly to a rhino, it charges angrily towards Carl, Jack, and the Venture crewmen with them on sight without provocation (outside possible territoriality matters) and takes at least two gas bombs and multiple gunshots to go down. It also noticeably has a tail long enough to have eight spikes on it instead of the usual four.

  • The original novel Carnosaur by John Brosnan featured Scolosaurus among the cloned dinosaurs. Like practically every dinosaur in the book (except, needless to say, the Brachiosaurus) it's aggressive to an absurd degree, going so far as to destroy a tank with its tail club!
  • The Dinosaur Lords: Ankylosaurs are used as Rob's secret weapon against Karyl's seemingly invincible legion of dinosaurs. Not carnivores, oddly enough, but Triceratops: It's actually explained that they do not like each other due to being competitors for the same food and territory: the Triceratops can use their horns to flip the Ankylosaurus over, while the Ankylosaur can slip in under the Triceratops to smash their legs via tail club.
  • Prehistoria: Averted heavily with the Tarchia featured... As a corpse. It apparently had a bad encounter with a territorial Deinocheirus and its tail club nor armor saved it from getting stomped on and crushed to death by the much larger herbivore.
  • Raptor Red features Gastonia, though in the book it's erroneously described as having a club tail. Gastonias are generally left alone by Red and other Utahraptors, though her mate is from a family that figured out a way to successfully hunt them and he teaches her. Another scene sees a young Acrocanthrosaurus try to take a bite and lose a tooth to its tail club, convincing it to go hunting for less tenacious prey.

    Live-Action Shows 
  • In Dino Dan, Stegosaurus and Euoplocephalus are recurring armored dinosaurs in the show, with Dan often trying to learn about their strengths. In one episode, the Stegosaurus manages to scare off a Spinosaurus by changing the color of its plates as a warning signal.
  • Dinosaurs: Spike, Robbie's friend, is a Polacanthus and the resident Bad Butt.

    Tabletop Games 
  • Warhammer: The Bastiladon is an ankylosaurian beast often used by the Lizardmen as a war mount. Its noted for its multiple layers of incredibly thick armor that make it impervious to attacks from any of Lustria's carnivores and allow it to carry powerful magical weapons like the Ark of Sotek without being harmed, while also subsequently making it incredibly slow and cumbersome.

    Video Games 
  • Banjo-Tooie: The common baddy of Terrydactyland are small stegosaurs called the Bargasaurus, which attack Banjo on sight by barging into him. When Banjo turns into a Baby T. rex the Bargasaurus do not attack (although they can still damage him) and will even teach him how to roar.
  • E.V.O.: Search for Eden: Stegosaurus and Ankylosaurus ("Segosaurus" and "Pronesaurus" in the English translation) are both enemies in the Age of Dinosaurs chapter, with the latter mocking the player for looking stupid. Zig-zagged in the final chapter, where a surviving population of Stegosaurus will give the player hints on how to become a human in exchange for sparing them, though they will still attack once returning to the level or refusing their offer.
  • Jurassic Park
    • Jurassic Park: Dinosaur Battles: The Stegosaurus that serves as the end boss of the first map guards the bridge to the second map and doesn't allow anyone to bypass it. An Ankylosaurus in the third map subverts this as, in addition to being territorial, it's smart enough to set up traps that would take away some of your dinosaur's health before battle.
    • Jurassic World: Evolution: Stegosaurids and Ankylosaurids, like any other dinosaur have specific needs and can get very fussy if they aren't met, usually being prompted into breaking out of their enclosures. Some, like the Ankylosaurus are rather notorious in that regard as they would rather be in more spacious enclosures with lesser dinosaurs compared to most herbivores.
  • Plants vs. Zombies 2: It's About Time: Stegosaurus and Ankylosaurus appear as stage hazards in the Jurassic Marsh. The former is depicted with a goofy smile, though it will stare at the screen with a bored expression if it's unable to hit the zombies with its tail. The latter also has a dopey design, but holds its spiked tail above its head like a scorpion, denoting that it's more disruptive and harder to deal with than the other dinosaurs.
  • Starter Mon Turtwig from Pokémon Diamond and Pearl becomes Torterra in its final evolution, a turtle/ankylosaur hybrid with Turtle Island motifs. It's a Gentle Giant, but is fearsome-looking and is rather tough with its high attack and defense.
  • Saurian: Ankylosaurus is one of the six confirmed playable dinosaurs in the game. It is the most territorial herbivore in the game, only tolerating members of its own kind during mating seasons and competing against even other herbivores regarding its diet. As a realistic simulation of the Hell Creek Formation, players are forced to play Ankylosaurus as a territorial animal.
  • Star Fox Adventures averts this with the Thorntails, a tribe of peaceful and harmless nodosaurs, but plays it straight with the Firecrawlers, a tribe of angry mutated ankylosaurs fought in Moon Mountain Pass and Dragon Rock who breathe fire and have a ton of health.
  • Zniw Adventure: Inverted with the blue Euoplocephalus at Rivenn-na; he is rather cowardly and becomes scared by a pack of Troodon, despite him being bigger and well-armed. Played straight with his brother, a red Euoplocephalus, who has no problem standing up to the Troodon pack blocking the path.
  • Both the original Zoo Tycoon game and its sequel have Ankylosaurus, Stegosaurus and Kentrosaurus when the prehistoric animals expansion pack has been installed. They are dangerous to human guests and regular zoo animals however due to lazy programming they are also very easy prey for any carnivorous predatory dinosaur such as a T.rex or a Velociraptor which instantly kill and eat them if they are placed in the same exhibit.

    Western Animation 
  • Darkwing Duck: Stegmutt is an anthropomorphic duck turned into an equally anthropomorphic Stegosaurus by a Devolution Device. He's a Gentle Giant Dumb Muscle who is initially the incompetent and not very malevolent henchman of the villainous Dr. Fossil, but he joins the Justice Ducks after his Heel–Face Turn.
  • Dinosaur Train: Hank Ankylosaurus' bony plates come in useful when playing dinoball; he isn't hurt one bit when he gets hit by the ball or tackled by other players (who are all ankylosaurs).

  • Extreme Dinosaurs: Stegz (a Stegosaurus, naturally) and later Hardrock (an Ankylosaurus). Both are shown as musclebound, barechested anthropomorphic dinosaurs. In an inversion of the stereotypes of stegosaurs as Jurassic dimwits, Stegz is the team's thoughtful Gadgeteer Genius. Meanwhile, Hardrock is more of a Martial Pacifist despite his fearsome appearance.
  • The Transformers:
    • Snarl the Dinobot transforms into a Stegosaurus. Like all the Dinobots, his intelligence varies considerably depending on the continuity, but even in the cartoon, where the Dinobots genuinely are idiots he's not the dumb one of the team (that honor goes to Sludge the Brontosaurus). He is, however, exceedingly tough, aggressive and antisocial, being a loner who only finds happiness in battle.
    • Soundwave's cassette, Slugfest, is also a Stegosaurus. He's always stupid regardless of the continuity. He's also The Berserker, flying into a rage at anything he doesn't understand (and since he's an idiot, that's everything).
  • Like Url from the Animated Film folder, Bumpy from Jurassic World: Camp Cretaceous averts this trope by virtue of being an atypically cute and shy Ankylosaurus who doesn't do much in the way of fighting. Played straight in Season 2, where she is now fully-grown and able to defeat Toro the Carnotaurus with ease, and in Season 3 where she is one of the only dinosaurs that can withstand and chase off the insane venomous prototype hybrid Scorpios rex. Season 4 introduces Pierce the Kentrosaurus who is strong enough to hold his own in a fight with Big Eatie the Tyrannosaurus rex before standing his ground against several mind-controlled dinosaurs in Season 5.