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20 Epic Facts About The Lord of the Rings Trilogy

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Between on-set injuries, extensive script changes, and one whopper of a casting process, at various points in the life of The Lord of the Rings trilogy it seemed as if director Peter Jackson might have bitten off more than he could chew. The trilogy that changed the face of fantasy films tackled a number of challenges along the way, but it all worked out in the end.

1. IT WENT THROUGH A TON OF SCRIPT REVISIONS.

When The Lord of the Rings started out, it was originally going to be two movies. Later, concerned about the ballooning budget, executive producers Bob and Harvey Weinstein tried to persuade Jackson to condense the movie into a single film. At various points in the scripting process, Arwen, not Éowyn, was the one to dress up as a man, ride into the Battle of Pelennor Fields, and kill the Witch-king; and Rohan and Gondor were combined into one kingdom. Miramax also suggested that the one-movie version be presented as a flashback, with an older Frodo “covering [the entire Mines of Moria sequence in Fellowship] by saying something like, ‘So then we went on a dangerous journey through the Mines of Moria and lost Gandalf!,’” recalled Jackson.

2. SEAN CONNERY DIDN'T UNDERSTAND THE SCRIPT.

Sean Connery read for the role of Gandalf but admitted that, “I never understood it. I read the book. I read the script. I saw the movie. I still don’t understand it … I would be interested in doing something that I didn’t fully understand, but not for 18 months.” Connery’s deal, if he had taken the role, would have been for a small fee plus 15 percent of the films’ income. Incidentally, the entire trilogy went on to earn just shy of $3 billion worldwide.

3. ARAGORN WAS AN EXTREMELY DIFFICULT ROLE TO CAST.

Nicolas Cage was offered the role of Aragorn, which he turned down due to “family obligations.” Famously, the role then went to up-and-coming Irish actor Stuart Townsend, who you probably don’t remember seeing in the final trilogy: “I was there rehearsing and training for two months, then was fired the day before filming began,” the actor later recalled. In need of an older actor, Jackson went to Viggo Mortensen, who took the role at the urging of his son Henry, who was a fan of the books.

4. RUSSELL CROWE WAS A POTENTIAL BACKUP FOR ARAGORN.

Had Mortensen turned down the role of Aragorn, there were two other actors Jackson had in mind as replacements: Jason Patric and Russell Crowe. “We sent [Crowe] a script and he did read it and was fascinated,” said Jackson. “I remember getting the phone call from his agent and being told that he had just finished another film which involved him having to have a sword and armor—Gladiator! Russell was flattered by the approach, but he had other films he was committed to and it obviously wasn’t going to work out.”

5. VIGGO MORTENSEN TOOK SEVERAL BEATINGS.

A variety of injuries beset the cast during production, but Mortensen had it particularly hard: in The Two Towers, that scream he let out upon kicking a helmet after discovering the burnt corpses of the Orcs who abducted Merry and Pippin might have something to do with the fact that he had just broken two of his toes. “Normally, an actor would yell ‘Ow!’ if they hurt themselves,” noted Jackson. “Viggo turned a broken toe into a performance.” Elijah Wood remembers Mortensen “getting half of his tooth knocked out during a fight sequence, and his insistence on applying superglue to put it back in to keep working.”

6. JAKE GYLLENHAAL AUDITIONED TO PLAY FRODO.

Jake Gyllenhaal had a less-than-successful audition for the role of Frodo. “I remember auditioning for The Lord of the Rings and going in and not being told that I needed a British accent. I really do remember Peter Jackson saying to me, ‘You know that you have to do this in a British accent?’” Gyllenhaal later recalled. “We heard back it was literally one of the worst auditions.”

7. VIN DIESEL, LIAM NEESON, AND UMA THURMAN WERE UP FOR ROLES.

Among other could-have-beens in the casting department: Vin Diesel auditioned for Aragorn; Jackson called his performance “very compelling” but said that it didn’t “feel like Aragorn.” Jackson approached Richard O’Brien, best known as Riff Raff in The Rocky Horror Picture Show (which he also wrote), for the role of Gríma Wormtongue, but his agents turned it down, believing the films would be unsuccessful. Liam Neeson passed on the role of Boromir.

There were also “discussions,” recalls Jackson, about then-married couple Ethan Hawke and Uma Thurman playing Faramir and Éowyn; “Ethan was a huge fan of the books and was very keen to be involved. Uma was less sure and rightly so, because we were revising how we saw Éowyn’s character literally as we went. In the end, Ethan let it go—with some reluctance.”

8. IAN HOLM HAD PLAYED FRODO BAGGINS YEARS EARLIER.

The Lord of the Rings trilogy marked a return to the Shire for Bilbo actor Ian Holm, who played Frodo in a 1981 radio dramatization of The Lord of the Rings, which was broadcast on BBC Radio 4. His performance in that factored into Jackson’s decision to offer him the Bilbo role.

9. CHRISTOPHER LEE WANTED TO PLAY GANDALF.

The late Christopher Lee was a Lord of the Rings superfan who actually met J.R.R. Tolkien (“I was very much in awe of him, as you can imagine,” he told Cinefantastique) and wanted to robe up as Gandalf, a role that eventually went to Sir Ian McKellen. (Lee himself admitted that, by the time the movies came around, he was “too old” for the action-heavy role.) Lee even played a wizard in the TV series The New Adventures of Robin Hood specifically “to show anyone who was watching that I could play a wizard and that I would be ideal casting for The Lord of the Rings.” He sent Jackson a picture of himself in wizard duds, though “it was more in the nature of a joke, really. It wasn’t me putting myself forward at all, because I think Peter had already made up his mind” to cast him as the wizard Saruman.

10. BOB WEINSTEIN REALLY WANTED TO KILL A HOBBIT.

Early on in the development process, before it found its eventual home at New Line Cinema, The Lord of the Rings trilogy was being made at Miramax with Harvey and Bob Weinstein. As Peter Jackson would later recall, Bob Weinstein really, really thought one of the four main Hobbits should die: “‘Well, we can’t have [all of them surviving],’ he said, ‘we’ve got to kill a Hobbit! I don’t care which one; you can pick—I’m not telling you who it should be: you pick out who you want to kill, but we’ve really got to kill one of those Hobbits!’ In situations like that, you just nod and smile and say, ‘Well, that’s something we can consider.’”

11. SEAN BEAN TREKKED UP A MOUNTAIN IN COSTUME.

Sean Bean typically opted against taking a helicopter up to some of The Fellowship of the Ring’s mountain filming locations, instead climbing to sets himself in full Boromir gear. “I used to be a bit terrified of flying,” he remembers, so “I had to walk the whole way, really. I was two hours behind everybody else on top of this mountain because I just didn’t want to get into any helicopters.”

12. FLIGHT OF THE CONCHORDS’ BRET MCKENZIE MADE A CAMEO.

Flight of the Conchords’ Bret McKenzie makes a brief appearance in The Fellowship of the Ring, playing an unnamed Elf during the Council of Elrond scene. Fan Iris Hadad latched onto the extra, naming him Figwit (short for “Frodo is great… who is that?”) and creating the fansite Figwit Lives in his honor. Peter Jackson, responding to the grassroots support for the character, added him to The Return of the King as “Elf Escort” and even gave him a line, “just [as] fun for the fans.” (In The Hobbit: An Unexpected Journey, McKenzie plays an elf named Lindir. He’s not the same character as Figwit, the actor notes, because the two have “slightly different ears.”)

13. AN ENTIRE ACTION SCENE WAS DESTROYED BY A FLOOD.

The end of The Fellowship of the Ring originally featured a scene where the heroes are ambushed by a band of Orcs as they row through rapids on the Anduin river. “We had all kinds of action planned with boats flipping over … and Legolas’ boat afloat as it bucks and tosses, while the Elf—standing with a foot on each of the gunwales—would be firing arrows at the attackers,” Jackson shared. But Mother Nature had other ideas, and a massive flood—in addition to causing a state of emergency in Queenstown, New Zealand—washed the entire ambush set down the river.

14. BILL THE PONY WAS TWO PEOPLE IN A HORSE COSTUME.

Sam’s pony Bill was, in Fellowship’s Midgewater Marshes scene, actually a “panto pony,” due to the difficulty of working with a live animal in a swamp. Not sure what a “panto pony” is? Well, that’s a fancy way of saying Bill was a pony suit with one person in the front half and one person in the back. It wasn’t exactly easy to work with, either. “We had a terrible struggle to get the pony to walk through the marshes because the performers were completely blind, buried in this costume and up to their waists in a real swamp,” shared Jackson. “Bill would try to walk and then would start to wobble and everyone would have to rush in and catch him before he fell over! There was one hilarious moment where the front legs moved without the back legs and Bill got stretched into a sort of long sausage dog!”

15. SEAN BEAN WAS READING HIS SCRIPT DURING THE COUNCIL OF ELROND SCENE.

Jackson and his co-writers Fran Walsh and Philippa Boyens were constantly in the process of revising the script, even during production; the actors would frequently get new dialogue to memorize the night before a particular scene was scheduled to shoot. That was the case with Boromir’s famous speech in The Fellowship of the Ring’s Council of Elrond scene. Look closely and you’ll see the actor occasionally lowering his eyes to look at the new script page, which was taped to his knee.

16. WOMEN IN BEARDS WERE USED AS EXTRAS.

A good chunk of the Riders of Rohan in The Two Towers and The Return of the King were actually women outfitted with fake beards. “There are some very good women riders in New Zealand, and it’d be silly not to take advantage of them,” recalled Viggo Mortensen in The Two Towers Extended Edition extras.

17. THE URUK-HAI AT HELM’S DEEP ARE NEW ZEALAND CRICKET FANS.

In the Battle of Helm’s Deep in The Two Towers, the chanting of the vicious Uruk-hai army was provided by a stadium full of New Zealand cricket fans. “There’s this Black Speech battle cry the Uruk do,” says executive producer Mark Ordesky. “We wrote it out phonetically on the Diamond Vision screen and Peter [Jackson] directed 25,000 people going ‘Rrwaaa harra farr rrara!”’

18. A SCENE WHERE ARAGORN FIGHTS SAURON IS IN THE RETURN OF THE KING… SORT OF.

Jackson filmed a scene for the end of The Return of the King where Aragorn goes toe-to-toe with the physical version of Sauron, in a sort of updated version of the Sauron-Isildur battle from the prologue of The Fellowship of the Ring. “By the time we had got to post-production,” Jackson remembers, the scene “no longer felt right,” so they cut it. But they did still use the footage: In the final battle, Aragorn can be seen battling a giant cave troll that was digitally superimposed over what was originally meant to be Sauron.

19. ONE OF THE MOST EMOTIONAL SCENES WAS SHOT OVER THE SPAN OF ONE YEAR.

It’s well known that all three Lord of the Rings movies were shot in one long stretch. As with most movies, the shoot wasn’t consecutive, meaning on any given day the schedule included scenes from all over the trilogy. Possibly the most extreme example of this has to do with the scene in The Return of the King where Frodo, urged by Gollum to think Sam has betrayed him, orders his loyal sidekick to go home. First Sam’s part was filmed, then Frodo’s … a year later. “Every time we cut to and fro between Frodo and Sam we are actually jumping back and forth across a year-long gap,” explained Jackson.

20. FRODO ORIGINALLY "STRAIGHT-OUT" MURDERED GOLLUM.

The final confrontation between Frodo and Gollum in The Return of the King was originally going to end with Frodo pushing Gollum off the ledge into Mount Doom; “straight-out murder,” Jackson admitted, “but at the time we were OK with it because we felt everyone wanted Frodo to kill Gollum. But, of course, it was very un-Tolkien, because it flew in the face of everything that he wanted his heroes to be.” Years later, the scene was re-shot as it ended up in the film.

Additional Sources:
Peter Jackson: A Film-Maker’s Journey, by Brian Sibley
Peter Jackson: From Prince of Splatter to Lord of the Rings, by Ian Pryor

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10 Scientific Benefits of Being a Dog Owner
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The bickering between cat people and dog people is ongoing and vicious, but in the end, we're all better off for loving a pet. But if anyone tries to poo-poo your pooch, know that there are some scientific reasons that they're man's best friend.

1. YOU GET SICK LESS OFTEN.

Dog snuggling on a bed with its person.
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If cleaning commercials are to be believed, humanity is in the midst of a war against germs—and we shouldn't stop until every single one is dead. In reality, the amount of disinfecting we do is making us sicker; since our bodies are exposed to a less diverse mix of germs, our entire microbiome is messed up. Fortunately, dogs are covered in germs! Having a dog in the house means more diverse bacteria enters the home and gets inside the occupants (one study found "dog-related biodiversity" is especially high on pillowcases). In turn, people with dogs seem to get ill less frequently and less severely than people—especially children—with cats or no pets.

2. YOU'RE MORE RESISTANT TO ALLERGIES.

Child and mother playing with a dog on a bed.
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While dog dander can be a trigger for people with allergies, growing up in a house with a dog makes children less likely to develop allergies over the course of their lives. And the benefits can start during gestation; a 2017 study published in the journal Microbiome found that a bacterial exchange happened between women who lived with pets (largely dogs) during pregnancy and their children, regardless of type of birth or whether the child was breastfed, and even if the pet was not in the home after the birth of the child. Those children tested had two bacteria, Ruminococcus and Oscillospira, that reduce the risk of common allergies, asthma, and obesity, and they were less likely to develop eczema.

3. YOU'LL HAVE BETTER HEART HEALTH.

Woman doing yoga with her dog.
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Everything about owning a dog seems to lend itself to better heart health. Just the act of petting a dog lowers heart rate and blood pressure. A 2017 Chinese study found a link between dog ownership and reduced risk of coronary artery disease, while other studies show pet owners have slightly lower cholesterol and are more likely to survive a heart attack.

4. YOU GET MORE EXERCISE.

Person running in field with a dog.
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While other pets have positive effects on your health as well, dogs have the added benefit of needing to be walked and played with numerous times a day. This means that many dog owners are getting 30 minutes of exercise a day, lowering their risk of cardiovascular disease.

5. YOU'LL BE HAPPIER.

Woman cuddling her dog.
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Dog owners are less likely to suffer from depression than non-pet owners. Even for those people who are clinically depressed, having a pet to take care of can help them out of a depressive episode. Since taking care of a dog requires a routine and forces you to stay at least a little active, dog owners are more likely to interact with others and have an increased sense of well-being while tending to their pet. The interaction with and love received from a dog can also help people stay positive. Even the mere act of looking at your pet increases the amount of oxytocin, the "feel good" chemical, in the brain.

6. YOU HAVE A MORE ACTIVE SOCIAL LIFE.

Large bulldog licking a laughing man.
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Not only does dog ownership indirectly tell others that you're trustworthy, your trusty companion can help facilitate friendships and social networks. A 2015 study published in PLOS One found that dogs can be both the catalyst for sparking new relationships and also the means for keeping social networks thriving. One study even showed that those with dogs also had closer and more supportive relationships with the people in their lives.

7. YOUR DOG MIGHT BE A CANCER DETECTOR.

Man high-fiving his dog.
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Your dog could save your life one day: It seems that our canine friends have the ability to smell cancer in the human body. Stories abound of owners whose dogs kept sniffing or licking a mole or lump on their body so they got it checked out, discovering it was cancerous. The anecdotal evidence has been backed up by scientific studies, and some dogs are now trained to detect cancer.

8. YOU'LL BE LESS STRESSED AT WORK.

Woman working on a computer while petting a dog.
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The benefits of bringing a dog to work are so increasingly obvious that more companies are catching on. Studies show that people who interact with a pet while working have lower stress levels throughout the day, while people who do not bring a pet see their stress levels increase over time. Dogs in the office also lead to people taking more breaks, to play with or walk the dog, which makes them more energized when they return to work. This, in turn, has been shown to lead to much greater productivity and job satisfaction.

9. YOU CAN FIND OUT MORE ABOUT YOUR PERSONALITY.

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The kind of dog you have says a lot about your personality. A study in England found a very clear correlation between people's personalities and what type of dogs they owned; for example, people who owned toy dogs tended to be more intelligent, while owners of utility dogs like Dalmatians and bulldogs were the most conscientious. Other studies have found that dog owners in general are more outgoing and friendly than cat owners.

10. YOUR KIDS WILL BE MORE EMPATHETIC.

A young boy having fun with his dog.
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Though one 2003 study found that there was no link between pet ownership and empathy in a group of children, a 2017 study of 1000 7- to 12-year-olds found that pet attachment of any kind encouraged compassion and positive attitudes toward animals, which promoted better well-being for both the child and the pet. Children with dogs scored the highest for pet attachment, and the study notes that "dogs may help children to regulate their emotions because they can trigger and respond to a child's attachment related behavior." And, of course, only one pet will happily play fetch with a toddler.

A version of this story originally ran in 2015.

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16 Prehistoric Creatures You’ll See In Jurassic World: Fallen Kingdom
Chris Pratt meets the vicious T. rex in Jurassic World: Fallen Kingdom (2018)
Chris Pratt meets the vicious T. rex in Jurassic World: Fallen Kingdom (2018)
Universal Pictures and Amblin Entertainment, Inc. and Legendary Pictures Productions, LLC.

The sequel to 2015’s Jurassic World ups the ante with a huge roster of dinosaurs, pterosaurs, and marine reptiles. While some are familiar favorites (see: T. rex), others have never been seen in a major motion picture before. Pull off your nostalgia goggles and let’s take a look at what modern science has to say about the long-gone animals of Jurassic World: Fallen Kingdom.

1. TYRANNOSAURUS

Lived: 68 to 66 million years ago in North America

Diet: Carnivore

Maximum Length: 40 feet

Name Means: “Tyrant lizard”

Apparently, the most popular dinosaur of all time wasn’t above cannibalism: Multiple Tyrannosaurus rex bones have bite marks on them that match the teeth of other tyrannosaurid species. Debate has arisen over the issue of T. rex plumage. University of Alberta paleontologist Scott Persons recently compared tiny skin impressions left behind by Tyrannosaurus and its close cousins Gorgosaurus, Daspletosaurus, and Tarbosaurus. These reveal that the dinos had pebbly scales, but the samples contain no evidence of feathers. Keep in mind though that the skin impressions only represent small patches of the dinosaurs’ tails, necks, abdomens, and pelvises—so Tyrannosaurus might’ve had feathers elsewhere on its body. For the record, Persons thinks the giant carnivore would still look “pretty cool and plenty scary” with a little fuzz. “[Nobody] ever complained that tigers weren’t scary, and they’re fluffy,” he said.

2. APATOSAURUS

Artistic interpretation of an individual of A. louisae arching its neck down to drink
Public Domain, Wikimedia Commons

Lived: 155 to 150 million years ago in North America

Diet: Herbivore.

Maximum length: 80 feet

Name means: “Deceptive lizard”

In 1879, an unidentified sauropod (a long-necked dinosaur) was found in Wyoming. At first, this creature was given the name Brontosaurus excelsus but in 1903, paleontologist Elmer Riggs rechristened it as Apatosaurus excelsus (the Apatosaurus had been described before the Brontosaurus, so the name had precedence). A few scientists now think the Brontosaurus and Apatosarus actually are distinct and the much better-known name ought to be reinstated for that particular group, but others disagree. Regardless, Apatosaurus was pretty awesome. Some of its bones were pneumatic and the body contained a number of air sacs. Such traits would’ve made the big plant-eater very lightweight for an animal of its size. Apatosaurus may have also been able to break the sound barrier by cracking its sinuous tail like a bullwhip.

3. TRICERATOPS

Lived: 68 to 66 million years ago in North America

Diet: Herbivore

Maximum length: 29 feet

Name means: “Three-horned face”

Give credit where it’s due: Look at the baby Triceratops in Fallen Kingdom and you may notice that the horns above its eyes curve backward ever so slightly. This is scientifically accurate. The brow horns of Triceratops newborns were tiny bumps which bent backward during the adolescent years. Then they changed course and bowed forward while the animals matured. Puncture wounds and lesions on the skulls of adult Triceratops tell us these animals locked horns in head-to-head combat. Triceratops was constantly replacing its teeth, which were arranged in tight clusters and most likely used to shear through fibrous vegetation.

4. SINOCERATOPS

Lived: 75 to 66 million years ago in China

Diet: Herbivore

Maximum length: 19 feet

Name means: “Chinese horned face”

A newcomer to the Jurassic Park films, Sinoceratops first came to light during a 2008 fossil-hunting excursion into China’s Shandong Province. It belongs to the same family as Triceratops and was the first member of this group to be found in Chinese rock. Small, forward-bending horns lined the top of its frill, which was proportionally smaller than that of Triceratops. A single cone-shaped horn sat over the nostrils.

5. ALLOSAURUS

Lived: 155.7 to 150 million years ago in North America and Portugal and possibly elsewhere

Diet: Carnivore

Maximum length: 28 (or possibly 35) feet

Name means: “Different lizard”

In one of the trailers for Fallen Kingdom, a running Allosaurus falls flat on its face. The dinosaur was no stranger to injury in real life. Cracked ribs, broken arms, and badly-infected toes are just a few of the medical maladies that Allosaurus skeletons have been preserved with. Selected as Utah’s official state fossil in 1988, Allosaurus is one of the most commonly found predatory dinos in the American west. Strong neck muscles may have allowed the carnivore to disembowel prey by pulling its head backward in a falcon-esque tugging motion. And here’s something we’d really like to see on the silver screen: According to a 2015 study, Allosaurus could possibly open its jaws at a nightmarish 92-degree angle.

6. MOSASAURUS

Lived: 70 to 66 million years ago in Europe and North America

Diet: Carnivore

Maximum length: 56 feet

Name means: “Lizard of the Meuse River” (It was first discovered along this European river in 1764.)

Mosasaurus wasn’t a dinosaur; it’s more closely related to snakes and monitor lizards than it is to any of the other creatures you’ll read about here. Both Jurassic World flicks show the marine reptile leaping high out of the water to snag unwary prey. According to mosasaur expert Michael J. Everhart though, these animals didn’t have the tail strength or speed to pull off such an athletic feat. Mosasaurus is the most famous member (and the namesake genus) of the mosasaur superfamily. Late in the age of dinosaurs, these were some of the ocean’s major predators. They probably swam like gigantic crocodiles, keeping their flippers pressed against the body. Fossil evidence tells us that mosasaurs gave birth to live young at sea and at least some of them had vertically-fluked tails.

7. PTERANODON

Lived: 88 to 80.5 million years ago in central North America

Diet: Carnivore (probable fishing specialist)

Maximum wingspan: 20 feet (or possibly 24 feet)

Name means: “Toothless wing”

Here’s another non-dinosaur for you. Good old Pteranodon was a kind of North American pterosaur. What’s that, you ask? Pterosaurs were flying reptiles that patrolled the skies from 228 to 66 million years ago. Long before birds or bats took to the air, pterosaurs became the first vertebrate animals to ever achieve powered flight. The good people of Kansas designated Pteranodon itself as one of their official state fossils in 2014. Back in this animal’s heyday, there was a vast inland sea which covered most of the Great Plains, splitting North America in two. Pteranodon may have behaved like a modern albatross, using its narrow wings to soar for vast distances on air currents above the ocean waves. The creatures were apparently keen on seafood: Pteranodon skeletons are sometimes found with masses of fish bones in their throats and stomachs. We may never know how they captured prey, but one idea can be dismissed outright: Not a single known pterosaur had opposable toes, so Pteranodon couldn’t have grabbed things with its feet like the genetically-engineered flyers in Jurassic World do.

8. CARNOTAURUS

Bryce Dallas Howard and Justice Smith are trapped by the Carnotaurus in 'Jurassic World: Fallen Kingdom' (2018)
Universal Studios and Amblin Entertainment, Inc. and Legendary Pictures Productions, LLC.

Lived: 72 to 69 million years ago in Argentina

Diet: Carnivore

Maximum length: 25 feet

Name means: “Meat-eating bull"

Carnotaurus didn’t show up in the first four Jurassic Park movies, but Michael Crichton wrote the horned creature into his 1995 novel The Lost World. The book depicts Carnotaurus as a nocturnal hunter that can change colors like an overgrown cuttlefish. There’s no reason to put any stock in this idea, but the real Carnotaurus was not without its quirky attributes—including its forelimbs. While T. rex gets a lot of flack for its meager arms, those of Carnotaurus are proportionately smaller, and the Argentine dino didn’t even have any wrist bones. On the flip side, Carnotaurus’s strong legs and powerful tail would’ve made it a gifted sprinter. Skin impressions reveal that its back, neck, and tail were studded with bony knobs, much like the ones Carnotaurus shows off in Fallen Kingdom.

9. GALLIMIMUS

Lived: 70 million years ago in Mongolia

Diet: Probable omnivore

Maximum length: 20 feet

Name means: “Chicken mimic”

Gallimimus belongs to an ostrich-like family of dinosaurs known as the ornithomimids. Though it lacks plumage in the Jurassic movies, real ornithomimids were covered in fuzzy down as youngsters and the adults grew long feathers on their arms. Gallimimus and its brethren couldn’t fly, but their showy, wing-like forelimbs could’ve been used to help them attract mates. Ornithomimids compensated for their lack of teeth by swallowing rocks, which ground up food in the stomach. Exactly what they ate is unclear, though most paleontologists think the ostrich mimics were either omnivorous or herbivorous.

10. BRACHIOSAURUS

Lived: 155 to 140 million years ago in North America

Diet: Herbivore

Maximum length: 72 feet

Name means: “Arm lizard”

Even though it’s poorly represented in the fossil record, Brachiosaurus is well-known to the general public. This is largely due to its breakout role in the first Jurassic Park movie. The Brachiosaurus in that classic film hold their elongated necks in an almost vertical position, and this depiction might not be too far off. A 2010 biomechanical analysis argued that browsing on treetops would’ve been a more energy-efficient option for Brachiosaurus-like sauropods than holding their necks horizontally and eating ground-level plants. It’s interesting to think about the behemoth’s cardiovascular system: In order to pump blood up that lengthy neck and into the head, Brachiosaurus may have required a gigantic heart weighing in the neighborhood of 880 pounds.

11. ANKYLOSAURUS

Lived: 68 to 66 million years ago in North America

Diet: Herbivore

Maximum length: 21 feet

Name means: “Curved lizard”

We know this formidable animal had a backside covered in bony plates; yet because no one’s ever found a complete Ankylosaurus skeleton, scientists disagree about how the armor was arranged. The 19-inch-wide club on its tail was probably a weapon. Using CT scans and anatomical measurements, a Canadian research team estimated that a large Ankylosaurus club could strike its target with enough force to break bones. Evolution made some of the tail vertebrae in these dinosaurs stiff and inflexible so they could support their heavy clubs. A hammer needs its handle after all.

12. STYGIMOLOCH

Lived: 68 to 66 million years ago in North America

Diet: Probable herbivore

Maximum length: 10 feet

Name means: “Styx devil”

It’s kind of ironic that Stygimoloch is mentioned by name in Fallen Kingdom’s promo videos. Paleontologist John R. “Jack” Horner has worked as a consultant for all five Jurassic Park films. He thinks that Stygimoloch is nothing more than the juvenile version of the thick-headed dinosaur Pachycephalosaurus, which lived at the same time and place. (You may remember the latter’s cameo in 1997's The Lost World: Jurassic Park.) This would render the name Stygimoloch invalid. Horner’s argument is supported by the trademark feature of both dinos: the iconic domes on the top of their craniums. Stygimoloch’s skull bones were not fully fused together, suggesting the animal had a lot of growing to do. CT scans have also shown that Stygimoloch’s dome was significantly thinner than that of Pachycephalosaurus. Perhaps these dinos used their special skulls to flank each other—or maybe the thick noggins were designed for heavy-duty headbutts. For his part, Horner has proposed that these were used for identification.

13. STEGOSAURUS

Mounted skeleton of Stegosaurus stenops in right lateral view at the Natural History Museum, London.
Susannah Maidment et al. & Natural History Museum, London, CC BY 4.0, Wikimedia Commons

Lived: 155 to 150 million years ago in North America and Portugal

Diet: Herbivore

Maximum length: 23 feet

Name means: “Roof lizard”

Nobody knows what to make of the bony plates on Stegosaurus’s back. If self-defense was their purpose, why do they project upward from the spine, leaving the flanks of this vegetarian wide open? And why do the plates of other spiky-tailed dinosaurs in its family have radically different shapes? One hypothesis is that these bizarre accessories were used to attract mates—much like the peacock’s gaudy tail feathers. Maybe they also helped the small-headed herbivores recognize other members of their own kind from afar. The quartet of spikes on Stegosaurus’s tail were almost certainly used to ward off attackers. Live Stegosaurus got plenty of mileage out of these weapons: One survey, which compared 51 individual spikes, reported that just under 10 percent had been broken and re-healed at the tip.

14. COMPSOGNATHUS

Lived: 150 million years ago in Germany and France

Diet: Carnivore

Maximum length: Four feet

Name means: “Elegant jaw”

Only two skeletons of this dinosaur have ever been discovered, both of which were found with the remains of tiny lizards tucked inside their rib cages. That’s a pretty far cry from the scene in The Lost World: Jurassic Park where a swarm of “Compies” gobble up the man who’s been tormenting them with a cattle prod. But we digress. Named in 1859, Compsognathus used to be the smallest type of non-avian dinosaur known to science. It no longer retains this title, as the creature would’ve dwarfed some more recently-discovered dinos like the 15-inch Mongolian Parvicursor.

15. BARYONYX

Bryce Dallas Howard and Justice Smith encounter the Baryonyx in 'Jurassic World: Fallen Kingdom' (2018)
Universal Pictures and Amblin Entertainment, Inc. and Legendary Pictures Productions, LLC.

Lived: 130-125 million years ago in England, Spain, and Portugal

Diet: Carnivore

Maximum length: 25 feet

Name means: “Heavy claw”

Sail-backed Spinosaurus was the main villain in 2001's Jurassic Park III—a casting choice that irked plenty of fans. Baryonyx was a close relative of this beast who now joins Jurassic World: Fallen Kingdom’s Mesozoic ensemble. Preserved stomach contents have shown that Baryonyx ate fish as well as the herbivorous dinosaur Iguanodon. On each hand, Baryonyx had a 12-inch hooked claw that served an unknown purpose. (Artists like to imagine it as a fishing tool.) The animal’s conical teeth look well-equipped for grabbing hold of slippery prey. Despite the narrowness of its snout, Baryonyx’s jaws were able to withstand a great deal of bending and torsion.

16. VELOCIRAPTOR

Chris Pratt with a baby Velociraptor in 'Jurassic World: Fallen Kingdom' (2018)
Universal Pictures and Amblin Entertainment, Inc. and Legendary Pictures Productions, LLC.

Lived: 85 to 70 million years ago in Mongolia and China

Diet: Carnivore

Maximum length: 7 feet

Name means: “Swift thief”

Velociraptor stood less than two feet tall at the hip and weighed around 55 pounds. Michael Crichton’s description of the animal was inspired by its bigger cousin, Deinonychus. Even that dinosaur was smaller than the man-sized predators of Jurassic Park, though. Both Velociraptor and Deinonychus were dromaeosaurs: bird-like carnivores with bony rods in their tails and sickle-shaped toe claws. (When we say “bird-like,” we mean it: Dromaeosaurs are thought to be some of our feathered friends’ closest relatives. Many had plumage; Velociraptor itself came with sizable feathers on each arm.)

The notion that they hunted in packs can be traced back to the maverick paleontologist John Ostrom of Yale. During the 1960s, he worked at a Montana dig site where four Deinonychus were found around the body of a larger herbivore named Tenontosaurus. Ostrom’s belief that dromaeosaurs hunted in organized groups gained traction with scientists and novelists alike. A newer interpretation of the data is that the dinos lived alone and at most occasionally came together to mob vulnerable plant-eaters.

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