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10 Spiky Facts About Stegosaurus

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Poor Stegosaurus. Thanks its relative brain size, the Jurassic herbivore—while popular—has been slapped with prehistoric punchlines for over a century. Today, we’re saluting one of earth’s most misunderstood dinosaurs.

1. Stegosaurus’ Name is a Giant Anachronism.

Meaning “roof lizard,” it references the outdated idea that Stegosaurus’ characteristic back plates were arranged horizontally like enormous shingles. We now know these weird-looking bones stood upright, though what they were actually used for remains an open question.

2. No, Stegosaurus Didn’t Have a Second Brain Above its Butt. That Myth Needs to Go Extinct.

To be fair, the spinal columns of certain dinos—such as Stegosaurus—do have sizable cavities around their fannies. During the late 1800s, some briefly speculated that a ‘posterior braincase’ was housed there; after all, since Stegosaurus’ cranium wasn’t exactly plus-sized, backup grey matter seemed like a helpful feature.

Amusing as that notion is, there isn’t a shred of decent evidence to support it (for instance, no modern animals have one). Sadly, however, this two-brained dinosaur rumor persists.

3. Stegosaurus Did, However, Boast Pebbly Throat Armor.

Nobu Tamura

Circular lumps arranged on the neck’s underside would’ve assisted Stegosaurus in shielding its jugular from hungry predators.

4. It’s Also the State Fossil of Colorado.

Despite this, the Colorado Rockies’ current mascot is a purple Triceratops named "Dinger." At least with Stegosaurus, they could’ve thrown in some cheesy home "plate" puns. What a missed opportunity…

5. An Unlucky Allosaurus (Probably) Met the Business End of One.

Wikimedia Commons

Wanna hear something scary? A noticeable percentage of known Stegosaurus tail spikes have broken and re-healed tips, indicating that, in life, their owners put them to good use. Furthermore, one famous Allosaurus vertebrae includes an unusual hole which was apparently made when the carnivore tangled with a feisty Stegosaurus and its well-armed hind end.

6. Stegosaurus Would’ve Had an Interesting Gait.

Because its front legs were significantly shorter than the rear ones, Stegosaurus was hardly speedy or agile. Realizing this, the animators of 1999’s Walking with Dinosaurs series gave the creature a frontal swagger to accommodate this difference in limb length.

7. It Wasn’t Much of a Biter.

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In 2010, using skull dimensions and tooth analyses, paleontologist Miriam Reichel found that Stegosaurus’ chompers didn’t exert much force, though being able to snip through “smaller branches” was still on their resume. 

8. In 1920, Stegosaurus was Reimagined as a Dinosaurian Hang-Glider.

Beneath one of the freakiest dinosaur drawings ever conceived, journalist W.H. Ballou wrote that—by "flapping" its plates—Stegosaurus could “[coast] through the air like some gigantic gliding machine” in an article submitted to the Standard-Examiner of Ogden, Utah.

9. Stegosaurus May Have Inhabited Portugal.

Although it was first found in the U.S. (and is usually seen as a quintessentially American dino), fragmentary remains unearthed across the pond strongly imply that Stegosaurus also roamed Portuguese terrain 150 million years ago.

10. It Has an Odd Connection to Gary Larson’s The Far Side.

In one of The Far Side’s classic 1982 strips, a Neanderthal is seen pointing to a Stegosaurus tail, remarking “Now this end we call the thagomizer… after the late Thag Simmonds.” Since then, many paleontologists have been using the term "thagomizer" to denote real-life stegosaur tails.

“I think there should be cartoon confessionals,” Larson himself later opined, “where we could go and say things like, ‘Father, I have sinned—I have drawn dinosaurs and hominids together in the same cartoon.’”

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Feathers, Fighting, and Feet: A Brief History of Dinosaur Art
Wikimedia Commons/Public Domain
Wikimedia Commons/Public Domain

One of the first-known works of dinosaur art was The country of the Iguanodon, an 1837 watercolor by John Martin. It depicts the ancient reptiles as giant iguanas, thrashing and fighting near a stone quarry—a far cry from today's sophisticated 3D renderings.

By watching the PBS Eons video below, you can learn how our image of dinosaurs has changed over the centuries, thanks to artworks based on new scientific discoveries and fossil findings. Find out why artists decided to give the prehistoric creatures either feathers or scales, make them either active or sluggish, present them as walking on two or four feet, and to imagine tails that either dragged or lifted, among other features.

Keep in mind, however, that both emerging technologies and new findings are constantly changing the way scientists view dinosaurs. A new species, on average, is named every two weeks—and this research will likely keep artists busy (and constantly revising their work) for years to come.

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Pop Chart Lab
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Design
Epic Poster Features Over 100 Hand-Drawn Illustrations of Dinosaurs
Pop Chart Lab
Pop Chart Lab

Paleontologists are constantly discovering new dinosaurs (or questioning whether beloved species ever existed in the first place), so it's hard to keep track of every dino that ever existed. But if you want an up-to-date catalogue of the most significant beasts from the Triassic to the Cretaceous periods, this taxonomy poster from Pop Chart Lab is tough to beat.

Titled Dinosauria, the chart organizes more than 700 genera of dinosaurs into one easy-to-read infographic. All of the standard favorites are represented, like Triceratops and T. Rex, as well as some more obscure or newly discovered prehistoric reptiles like Conchoraptor and Psittacosaurus. Pop Chart Lab pulled its data from the most current classification systems, even including research published just this year that unifies ornithischians with theropods.


The 100 hand-drawn illustrations and accompanying taxonomic timeline took over 500 hours of research to design. Hanging it on your wall at home requires a lot less effort: You can order a 24-inch-by-36-inch print for $37 from Pop Chart Lab’s online store.

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