Triceratops Trivia
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48 free Triceratops trivia questions with answers — science & nature quiz, new questions added Sep 2026.
Triceratops is the archetypal horned dinosaur, and this quiz goes well beyond 'three horns and a frill'. It covers what the name means, how big the animal and its enormous skull were, how many teeth were stacked in its dental battery, what the frill was probably for, why palaeontologists argue about whether Torosaurus is just an old Triceratops, and how a fossil discovered by a cowboy's lasso ended up named as a bison. It also digs into the fights and the finds: the T. rex tooth marks that healed on a Triceratops horn, Big John's frill wound from another Triceratops and his 6.6 million euro sale, Lane's fossil skin from Wyoming, the 1900 Paris Exposition mount, Charles Knight's mural that made T. rex and Triceratops enemies forever, and its status as Wyoming's state dinosaur. Easy questions ask which continent and how many horns; hard ones want vertebra counts, holotype numbers and species names. Every answer was checked against Wikipedia's articles on Triceratops and Big John, and each question carries the sentence that supports it. Our Dinosaurs and Tyrannosaurus Rex quizzes go further.
30 of 48 questions with answers and explanations. Play the quiz
Q 01What does the name Triceratops mean?
Three-horned face
Three-horned face comes from the Greek tri, keras and ops. The same 'ops', which can also mean eye, gives the one-eyed Cyclops his name.
Q 02Which famous dinosaur had already been extinct for more than 70 million years when Triceratops appeared?
Stegosaurus
Stegosaurus died out about 145 million years ago and Triceratops arose about 68 million years ago. That gap is wider than the 66 million years between Triceratops and us.
Q 03In the 1988 animated film The Land Before Time, what is the name of Littlefoot's stubborn three-horned friend?
Cera
Cera belongs to what the film calls the three-horns. She first refuses to travel with Littlefoot because her father has taught her that three-horns never mix with other kinds.
Q 04Triceratops looks like a giant rhinoceros, though the two are unrelated; what is such a resemblance called?
Convergent evolution
Convergent evolution gives unrelated animals similar bodies for similar lives, as with the wings of bats and birds. Rhinos are mammals, so the horn and bulk arose twice.
Q 05The frill of Triceratops was long seen as a neck shield; what does the prevailing theory say it was mainly for?
Attracting mates
Attracting mates is the leading idea. As a shield the frill fell short: some fossil frills carry the punctures of Tyrannosaurus teeth.
Q 06Triceratops belonged to which great group of dinosaurs, together with the duck-bills and the armoured dinosaurs?
Ornithischia
Ornithischia means 'bird-hipped', after a hip bone that points backwards as it does in birds.
Q 07One Triceratops species lies in lower rock layers than the other; what does that suggest?
They were ancestor and descendant
They were ancestor and descendant: a 2014 study of over 50 Montana skulls found the lower species turning into the upper over a million years or more. Skulls from the middle layers blend the features of both.
Q 08Which long-frilled horned dinosaur did a 2010 paper claim was simply Triceratops in old age?
Torosaurus
Torosaurus was, on that reading, the final growth stage. Critics answered with young Torosaurus and very old Triceratops skulls, and the dispute goes on.
Q 09The original Triceratops skull that Othniel Marsh named in 1889 is kept at which university's museum?
Yale
Yale holds it because Marsh taught there as the first professor of paleontology in the United States. His collectors out West sent their finds back to its Peabody Museum.
Q 10The first Triceratops horns, found near Denver in 1887, were mistaken for which animal?
A giant bison
A giant bison was Marsh's verdict, and he named the horns Bison alticornis. Only when more bones turned up did he see they belonged to a horned dinosaur.
Q 11A rancher showed fossil hunter John Bell Hatcher the first piece of the original Triceratops skull; what was it?
A broken horn
A broken horn sat in the rancher's fossil collection, taken from a huge skull his foreman had found in a deep canyon. Hatcher went back that winter and dug out the rest.
Q 12Besides the United States, which country has yielded Triceratops fossils?
Canada
Canada: finds in Alberta and Saskatchewan mark the northern end of its range. It was strictly North American, though horned relatives with their own showy frills roamed China and Mongolia.
Q 13In Jurassic Park (1993), what is wrong with the Triceratops that the visitors stop to examine?
It has fallen sick
Q 21Dinosauria is usually defined as every descendant of the last common ancestor of Triceratops and which other group?
Modern birds
Modern birds: the definition names two far-apart members and counts everything descended from their shared ancestor. That makes a hummingbird as much a dinosaur as Triceratops was.
Q 22One Protoceratops, a small cousin of Triceratops, was fossilised while fighting which predator?
Velociraptor
Velociraptor: the pair were found locked together in Mongolia in 1971, its foot claw in the plant-eater's neck and its arm clamped in the other's beak. A collapsing dune or sandstorm probably buried them mid-fight.
Q 23Triceratops fossils are among the most common of any dinosaur; how are its remains usually found?
It has fallen sick and lies on its side, tended by the park vet. Ellie Sattler stays behind to work out what it has been eating, so she is away from the tour cars when the fences fail.
Q 14The life-size Triceratops statue at Washington's National Zoo was a gift from which kind of company, known for its dinosaur logo?
An oil company
An oil company: Sinclair, whose trademark was a dinosaur, gave the fibreglass model to the Smithsonian in the 1960s. It is called Uncle Beazley after a dinosaur in a children's book.
Q 15Triceratops horns were longer in life than their fossil cores, because the bone was sheathed in which material?
Keratin
Keratin, the stuff of fingernails and cattle horns, covered each bony core and rarely fossilises. The brow horns, about a metre long as bone, were longer and sharper on the living animal.
Q 16Tough plants wore down Triceratops teeth; how did the animal manage?
It kept growing new ones
It kept growing new ones: each jaw held columns of three to five stacked teeth, up to 800 in all, with replacements coming through for the whole of its life.
Q 17Unlike most other ceratopsids, the frill of Triceratops was what?
Solid, without large openings
Solid, without large openings: relatives carried bigger frills that were mostly open in the centre. The short solid sheet may have guarded the neck, though tyrannosaur bite marks show it was sometimes punctured.
Q 18The toothless beak at the front of a Triceratops's mouth is most often compared to that of which bird?
Parrot
Parrot: the beak did no chewing, which fell to rows of teeth behind that sliced plants like shears. An early cousin is even named Psittacosaurus, the parrot lizard.
Q 19A 2012 study of Triceratops's elbows tipped a long argument towards which front-leg posture?
Upright, close to the body
Upright, close to the body: early reconstructions sprawled the elbows out like a lizard's, since the shoulder joint can be rebuilt either way. Even one of its authors said the argument was not over.
Q 20The Triceratops nicknamed 'Lane', displayed in Houston, is famous for preserving what?
Large areas of skin
Large areas of skin: patches of fossilised hide were found in the rock around the skeleton, a rarity for any dinosaur. They show that Triceratops was covered in large, pebbly scales.
One at a time
One at a time: unlike many horned relatives, which left vast bonebeds, adults nearly always turn up alone. Rare finds of three youngsters, and later at least five animals that died together, hint at some social life.
Q 24What do researchers think punched the keyhole-shaped hole in the frill of the giant Triceratops Big John?
A rival's horn
A rival's horn, most likely: the hole's size and shape fit a horn tip driven in from behind. Similar wounds on other skulls suggest these animals sparred with each other much as deer lock antlers.
Q 25Big John, the largest Triceratops skeleton known, fetched €6.6 million in 2021 at an auction in which city?
Paris
Paris: the Drouot auction house sold it to a private American collector for more than four times the expected price, a European record. A French museum director said public collections simply could not compete.
Q 26Big John was found in 2014 in which state, known for its Badlands?
South Dakota
South Dakota: the bones then went to a workshop in Trieste, Italy, for months of cleaning and rebuilding, which is how an American dinosaur came to be unveiled in an Italian piazza.
Q 27Big John's Italian restorers posed the mounted skeleton to echo which famous sculpture?
New York's Charging Bull
New York's Charging Bull: the workshop modelled the dinosaur's stance on Arturo Di Modica's bronze, which the sculptor installed outside the Stock Exchange without permission in 1989.
Q 28How do scientists know that one Triceratops survived a Tyrannosaurus bite to its brow horn?
The bitten bone had healed
The bitten bone had healed: bone regrows only in a living animal, so the tooth-marked horn shows its owner got away. Who started it, and whether the two ever fought head-on, is still argued.
Q 29Tooth marks on Triceratops frills suggest Tyrannosaurus did what to reach the rich meat of the neck?
Tore the head off
Tore the head off: a 2012 study argued the frill carried too little flesh to be worth eating, so the predator gripped it as a handle and wrenched the skull away from the body.
Q 30Triceratops's deep, narrow beak is thought to have been best suited to what?
Grasping and plucking
Grasping and plucking is the usual reading of its deep, narrow beak, the mark of a choosy feeder that picked its plants. The heavy work happened further back, where packed columns of teeth sheared the food to pieces.