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10 Crested Facts About Dilophosaurus

Let's take a closer look at Dilophosaurus, an off-kilter dino that Jurassic Park turned into a Mesozoic celebrity.

1. Sorry, Spielberg: Dilophosaurus Probably Wasn’t Poisonous...

Both the first Jurassic Park film and the Michael Crichton novel upon which it’s based feature toxin-spewing Dilophosaurus. However, at over 20 feet long, the real animal was an unusually-large predator for its time. As such, it would’ve likely been plenty scary without producing poisons, and there’s currently no strong evidence that can support this spurt of artistic license.

2. …And, it Also Lacked a Flashy Neck Frill.

The liberties keep on coming! One of these critters pounces on the film’s human villain after sprouting some bizarre, vibrating fins. Modern frilled lizards (Chlamydosaurus kingii) make themselves look bigger with similar structures, but, again, Dilophosaurus undoubtedly lacked them. Still, fans can at least credit Universal Pictures with getting the dinosaur’s bony head crests (mostly) right.

3. Dilophosaurus Was Discovered by a Native American.

In 1942, Navajo Jesse Williams led fossil-hunters Bill Rush, Ed Kott, and Sam Welles to the site where he’d happened upon the first known Dilophosaurus remains two years earlier.

4. Tantalizingly Dilophosaurus-Like Tracks Have Been Found in New England.

Dilophosaurus Footprint in Red Fleet Dinosaur Tracks Park, Utah, via

Although Dilophosaurus bones hail exclusively from the American southwest, a series of footprints belonging to a very similar dino were spotted in some Massachusetts and Connecticut rock of roughly the same geologic age during the 1840s. Since one can’t know for sure whether Dilophosaurus laid them or not, these tracks were given the scientific name Eubrontes giganteus by naturalist Edward Hitchcock (they’ve since been honored as Connecticut’s official state fossil).

5. Dilophosaurus Used to Be Called “Megalosaurus wetherilli.”

Picture a classification-based island of misfit toys. For many years, wildly-different meat-eating dinosaurs found themselves erroneously lumped together under the name “Megalosaurus.”

In 1824, England’s Megalosaurus bucklandii became the first dinosaur to be scientifically named, and, at first, Dilophosaurus wetherilli was misinterpreted as a new species of this genus. The latter animal, which actually bore very little resemblance to that British beastie, was given its own, brand-new genus in 1970.

6. Its Teeth Were Unevenly-Anchored.

Much ado has been made about Dilophosaurus’ dentition. Towards the back of its upper jaw, several teeth are weakly-rooted, but those closer to the front appear significantly firmer. As a whole, many scientists claim, Dilophosaurus chompers weren’t strong enough for taking down larger prey despite the carnivore’s size.

7. Dilophosaurus Apparently Sat Like a Bird.

Andrew Borgen, Flickr

Skeletons are great, but, in a way, dinosaur footprints give us something even more incredible: fossilized behavior. Dilophosaurus has been tentatively credited with leaving an exceptional set of tracks in present-day Utah. Clearly made by an animal at rest, these prints include both fore- and hindlimb impressions. While squatting down for a breather, their maker’s palms—in classical bird-like fashion—faced each other via an upright, “clapping” position.  

8. It Might Have Been a Fish-Eater.

Needle-like, puncturing teeth may have helped Dilophosaurus snag wriggly, prehistoric fish. In this scenario, its high-set nostrils would have poked above the water’s surface should the creature ever decide to do a heron impression.

9. Some Alleged Dilophosaurus Feather Imprints Were Likely Misidentified.

Can we add Dilophosaurus to the rapidly-growing list of feathered dinosaurs? Not yet. Footprints left by one individual included what appeared to be feathery impressions pressed into the surrounding mud. Unfortunately, many now hold that these markings were more likely a series of frayed grooves created by the dinosaur shifting its weight around in the soft sediment. What a letdown…

10. Dilophosaurus is One of the Few Jurassic Dinosaurs in the Original Jurassic Park.

Seven dinos appear in this 1993 sci-fi epic—and among these, only the long-necked Brachiosaurus and the slender Dilophosaurus actually lived during earth’s Jurassic period (201.3 – 145 million years ago). Tyrannosaurus, Triceratops, Velociraptor, Gallimimus, and Parasaurolophus all evolved amidst the subsequent Cretaceous period (though, granted, “Cretaceous Park” isn’t exactly the coolest title. You win this round, Hollywood!). 

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