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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Meaning “roof lizard,” it references the outdated idea that Stegosaurus’ characteristic back plates were arranged horizontally like enormous shingles.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.

Wikimedia Commons

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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New LEGO Set Recreates Jurassic Park's Iconic Velociraptor Chase Scenes
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LEGO

Jurassic World: Fallen Kingdom, the fifth installment in the Jurassic Park franchise, is skulking into theaters on June 22. That makes now the perfect time to revisit the original film in LEGO form.

This LEGO set, spotted by Nerdist, depicts some of the most suspenseful scenes from the 1993 movie. There's the main computer room where Ariana Richards's Lex shows off her hacker skills while Alan Grant (Sam Neill) and Ellie Sattler (Laura Dern) struggle to keep a hungry dinosaur from barging in. Just like in the film, the door features a deadbolt lock that's velociraptor-proof (though, unfortunately for the characters, the detachable window is not). Other Easter eggs hidden in this part include a map of Isla Nublar and a screener saver of LEGO Dennis Nedry (Wayne Knight).

In the neighboring room, you'll find the cold storage unit where the dinosaur embryos are kept, along with the fake shaving cream can Nedry uses to steal them. The final section is the kitchen, where Tim (Joseph Mazzello) and Lex are stalked by the velociraptor. There's less room for them to hide in the LEGO version compared to the movie set, but there is at least one functioning cabinet for Lex to tuck herself into. Closer inspection reveals even more details from the film, like the lime-green Jello Lex is eating when the raptors first arrive and the step ladder the gang uses to escape into the air ducts during the final chase.

LEGO Jurassic Park set.

LEGO Jurassic Park set.

LEGO Jurassic Park set.

The Jurassic Park Velociraptor Chase set is currently available from the LEGO shop for $40.

[h/t Nerdist]

All images courtesy of LEGO.

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CHLOE EFFRON / DINOSAURS: ISTOCK
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Why Are There No More Dinosaurs?
CHLOE EFFRON / DINOSAURS: ISTOCK
CHLOE EFFRON / DINOSAURS: ISTOCK

WHY? is our attempt to answer all the questions every little kid asks. Do you have a question? Send it to why@mentalfloss.com.

Actually, there are still dinosaurs: Birds! But let’s talk about that a little later. Scientists have found clues in rocks and fossils that tell us that by 65 million years ago, the climate (CLY-met), or usual weather, of the Earth had changed a lot, becoming cooler and drier. That was hard on the heat-loving dinosaurs. But that’s not why almost all of the dinosaurs became extinct, or disappeared forever. Scientists think a terrible event occurred that killed them off.

In 1991, scientists discovered a huge 110-mile-long crater, or hole, in the Gulf of Mexico. They think this crater was made by a giant, fiery, 6-mile-wide asteroid (AST-er-oyd) from space that smashed into the Earth about 65 million years ago. The impact was more powerful than any bomb we have ever known. Scientists believe this event killed most plant and animal life—including the dinosaurs. The asteroid probably caused shockwaves, earthquakes, fireballs, wildfires, and tidal, or really big, waves. It also sent huge amounts of dust and gas into the atmosphere, which is like a big blanket of air that surrounds the Earth. That was really bad for the planet.

The dust blocked sunlight, making the planet very cold and dark. Then, over time, the gases trapped heat, causing the Earth to get even hotter than it was before the asteroid hit. This change was deadly for most dinosaurs, and they became extinct. But birds survived. Many millions of years earlier, they had evolved (ee-VOL-ved), or changed slowly over time, from one group of dinosaurs. And when the dinosaurs disappeared, mammals diversified (die-VERSE-uh-fide), or changed, into many different kinds of animals—including us, many millions of years later. So the next time you see a bird swoop by, wave hello to the little flying dinosaur!    


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