10 Details From Dinosaur Movies That Are Completely Inaccurate

The Jurᴀssic Park series and other dinosaur movies are known to take some extreme scientific liberties when it comes to their depictions of pre-historic animals, with many scientific inaccuracies that can be pointed to. Paleontologists’ understanding of dinosaurs is changing all the time, and some movies better reflect outdated knowledge understood at the time they were made.

The case of the Jurᴀssic Park films, paleontologists’ points of contention can be somewhat written off due to Ingen creating, as Dr. Alan Grant puts it, “theme park monsters” rather than literal dinosaurs, being more abstract genetic mutants that vaguely represent the idea of a dinosaur rather than an accurate portrayal. But some inaccuracies are far more egregious than others, and are harder to forgive.

10

Triceratops Droppings Weren’t Nearly That Huge

Ian Malcolm Accurately Describes The Feasibility Of Dino Dung

jurᴀssic park pile of poop

One of the earliest encounters Dr. Alan Grant and Ellie Sattler have with the recreated dinosaurs of Jurᴀssic Park centers on their feces. Observing a sick, possibly dying triceratops, the paleontologists get a noseful of a mᴀssive heap of dinosaur droppings, prompting Ian Malcolm to comment “That is one big pile of sh*t“.

Turns out that Malcolm’s comments are true in the metaphorical way, as Triceratops droppings were nowhere near that large in reality. Fossilized records of dinosaur feces, called coprolites, do exist, and none of them attributed to triceratops reaching near such a huge size. That being said, it could be argued that the dung pile represents the whole Triceratops herd’s droppings rather than one individual.

9

Brachiosaurus Couldn’t Stand On Its Hind Legs

The Land тιтans Weren’t Nearly So Graceful

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Of course, the most memorable early moment of dinosaurs actually appearing in Jurᴀssic Park is when Grant spots a breathtaking sight, turning Sattler’s head to see what he’s seeing — A herd of mᴀssive Brachiosaurus grazing on the treetops. As if to punctuate their size, one individual rears up on its hind legs to reach a particularly tall leaf.

In reality, Brachiosaurus’ unwieldy body would have been far too large to support such a feat of acrobatics, which would have caused it to topple over. That being said, it’s not so far out of the realm of impossibility that it ruins the scene as the brilliant premiere of the iconic Jurᴀssic Park theme song.

8

Velociraptors Were Actually Much Smaller

The Creatures In The Film Are More Like Deinonychus

Velociraptors in the Kitchen in Jurᴀssic Park

One of the more well-known errors attributed to Jurᴀssic Park is the size of the iconic Velociraptors. While these terrifying pack-hunters are shown to be standing at roughly head-height with a tall human man in the film, in reality, the dinosaur called “Velocirpator” was about the size of a modern-day turkey.

In reality, Jurᴀssic Park author Michael Crichton stole the Velociraptor’s more dramatic name and gave it to the larger and more threatening Deinonychus. The movie Dromaeosaurs are still larger than the Deinonychus, but the film strangely became retroactively accurate to a different species. Oddly, a raptor about the size of the Jurᴀssic Park Velicoraptors, the Utahraptor, was discovered shortly before the film’s premiere.

7

Mosasaurus Was Not A Kaiju-Sized Leviathan

Jurᴀssic World Dramatically Upscaled This Aquatic Predator

A Mosasaurus eats a Pteranodon in Jurᴀssic World

One of the most memorable moments in the requel Jurᴀssic World is the climactic defeat of the Indominus Rex, which is thrown into the gaping maw of the aquatic beast known as the Mosasaurus. Mosasaurus was indeed a real sea predator, but the film dramatically increases its size to absurd proportions, turning it into more of a movie kaiju than a faithful recreation.

The movie shows Mosasaurus as being able to snap up a T. Rex-sized creature in one bite, but in reality, the two were much closer in size. While the most generous estimates suppose that Mosasaurus grew to a gargantuan 18 meters in length, this still pales in comparison to its тιтanic depiction in Jurᴀssic World.

6

Dilophosaurus Wouldn’t Have Spat Venom

Jurᴀssic Park Essentially Made Up Whatever It Felt Like At Times

Dilophosaurus screaming in Jurᴀssic Park.

Image via Universal Pictures

It’s certainly true that fossilized bones don’t tell the whole story on what an actual animal may have really looked like, with most fleshy tissue being lost to the millennia in the fossil record. However, Jurᴀssic Park was certainly over-extrapolating when it supposed that Dilophosaurus had a frill and could spit venom, a ᴅᴇᴀᴅly habit it uses to kill Dennis Nedry.

In reality, Dilophosaurus’ skull shows no evidence of venom production or a frill, which it likely would if it were capable of channeling spurts of pressurized fluid from its mouth. Technically, Jurᴀssic Park can claim such fleshy apparatuses are possible, but they’re also scientifically unlikely and impossible to prove.

5

Pterosaurs Wouldn’t Have Been Able To Lift People Off Of The Ground

The Flying Animals Wouldn’t Have Been Such A Threat To People

Zara gets carried away by a Pteranodon in Jurᴀssic World

Despite not technically being dinosaurs, Pterosaurs have slowly become an iconic part of the Jurᴀssic Park movies, always managing to escape their domed enclosures and wreak havoc on the general population. In Jurᴀssic Park III and Jurᴀssic World, they’re shown as being able to lift hapless humans off the ground and into the air to be devoured later.

In reality, Pterosaurs like Dimorphodon and Pteranodon wouldn’t have been able to lift human beings off the ground, with the slender, weak muscles on their feet being far unsuited to take off with something so heavy in tow. It’s more likely that such animals primarily hunted fish, swallowing them whole down their gullets like pelicans.

4

Spinosaurus Was More Of A Fisher Than A Land Predator

Though The Jurᴀssic Park Franchise Somewhat Evolved With Changing Knowledge

Spinosaurus - Jurᴀssic Park III

Universal Pictures

Paleontologist’s understanding of the Spinosaurus has evolved greatly since its depiction in Jurᴀssic Park III. At the time, the creature was thought to be a long-limbed theropod standing toe-to-toe with T. Rex, resulting in the animal’s infamous win over the series mascot. However, it’s very unlikely the real Spinosaurus could have managed such a feat.

Like Pterosaurs, Spinosaurus was likely to have been more of a fish feeder, and has since been found to have shorter limbs and a more powerful tail further emphasizing its reliance on the water. The Spinosaurus’ most recent appearance in Jurᴀssic World Rebirth acknowledges this updated information, but still paints the animal in far too predatory a light, attacking mᴀssive ships.

3

T. Rex’s Vision Being Based On Movement

In Reality, Tyrannosaurus Rex Had Great Senses

T-Rex roaring in Jurᴀssic World Rebirth

Image by Yailin Chacon

Despite being the franchise’s most iconic dinosaur and one of the most well-known dinosaurs in general, the Jurᴀssic Park films get a lot wrong about the Tyrannosaurus Rex’s behavior. Most importantly, the moment in the first Jurᴀssic Park where Alan Grant ᴀsserts that the creature’s poor eyesight is based on movement.

In truth, Tyrannosaurus Rex would have had fantastic vision, with forward-facing eyes typical of a predator that likely provided excellent sight even in low-light conditions. In a way, the most powerful dinosaur of Jurᴀssic Park would have been even stronger if the supposed expert paleontologist Dr. Grant provided accurate information.

2

The Way Raptors Walk Around Is All Wrong

Dromaeosaurs’ Body Plan Is Totally Incorrect

Tim surviving the raptors in the kitchen

It’s one thing for a dinosaur movie to get a creature’s behavior or size wrong, but messing up how their bones physically worked is a particularly egregious mistake, considering it’s the one area in which paleontologists can be relatively certain. Throughout the Jurᴀssic Park series, Dromaeosaurs like Velociraptors hold their forelimbs like kangaroos, with wrists pointed down and folded in.

This is completely inaccurate to what scientists know about Dromaeosaurs. According to fossils, Dromaeosaurs actually held their hands with “palms” facing one another, as if they were holding a ball. To hold their arms like they do in the movies would actually shatter the creatures’ wrists, which were unable to pronate in such a way.

1

Many Theropods Would Have Had Feathers

A Tragic Relic Of Audiences’ Ideas Of Dinosaurs

Jurᴀssic World Dominion's Pyroraptor, a Feathered Dinosaur

For far too long, the Jurᴀssic Park films have popularized a completely untrue and outdated idea on dinosaurs, namely that huge theropods like T. Rex and Velociraptor were covered in lizard-like scales. In reality, dinosaurs are far more closely related to birds than modern-day reptiles, and many that walked on two legs are now understood to be covered in feathers.

It wasn’t until Jurᴀssic World Dominion included feathered dinosaurs that the series finally acknowledged this glaring mistake. The original Jurᴀssic Park can be forgiven for operating on the same knowledge scientists were at the time, but the series took far too long to rectify this mistake in light of modern studies.

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