"The most ferocious and insatiable carnivore ever to step on the face of the planet."

—Ed Regis^(src)

"We have a T. rex"

—John Hammond^(src)

Tyrannosaurus rex
Name meaning	"Tyrant Lizard King"
Code name	T. rex
Diet	Carnivore
Height	5.5-6.7 m (18-22 feet)
Length	12-12.8 m (39-43 feet)
Weight	5-6.5 tons
Location	USA, Canada.
Range	Isla Nublar Isla Sorna
Birth type	Egg
Novel appearances	Jurassic Park The Lost World
Film appearances	Jurassic Park The Lost World: Jurassic Park Jurassic Park III
Game appearances	All
Toy appearances	All

Tyrannosaurus rex (tye-RANNO-SAWR-us-recks) was a genus of the Tyrannosauridae family. Tyrannosaurus rex was a carnivore from the Late Cretaceous period, it was 39-43 feet (12-12.8 metres) long and weighed approximately 5-6.5 tons and was 18-22 feet (5.5-6.7 m) tall. Fossils have been found in the western portion of North America, which belonged to the separate landmass of Laramidia during the Late Cretaceous. Tarbosaurus bataar is the Asian cousin of Tyrannosaurus rex

More real-life information: Tyrannosaurus on Wikipedia.

Contents 1 Portrayal 1.1 Behavior 1.2 Description and Statistics 1.3 Eyesight Debate 2 Jurassic Park Franchise 3 Novels 3.1 Jurassic Park 3.2 The Lost World 4 Movies 4.1 Jurassic Park 4.2 The Lost World: Jurassic Park 4.3 Jurassic Park III 5 Kills 5.1 Jurassic Park Novel/Film 5.2 The Lost World Novel/Film 5.3 Jurassic Park III 5.4 Jurassic Park: The Game 6 Adventures 6.1 Survivor 6.2 Prey 7 Jurassic Park inspired games 7.1 Jurassic Park (arcade game) 7.2 The Lost World: Jurassic Park (arcade game) 7.3 Jurassic Park: Chaos Island 7.4 The Lost World: Jurassic Park (video game) 7.5 Warpath: Jurassic Park 7.6 Jurassic Park: Trespasser 7.7 Jurassic Park: Operation Genesis 7.8 Jurassic Park: The Game 8 Toy Lines 9 Gallery 10 Media 11 External links

PortrayalEdit

Note: This article deals with the creature seen in the Jurassic Park franchise, and may have some information that doesn't correspond to what information is available on the actual dinosaur.

It is possible that since it was a predator with binocular vision, Tyrannosaurus had trouble seeing stationary prey in the dark, though this is a dubious theory, and one that Dr.Grant suggested should be applied (the 'don't move' tactic) on Isla Sorna when they stumbled upon a Tyrannosaurus - in broad daylight. The rex killed Gennaro because he may have been still in one place, but he moved his arms a little bit, therefore revealing his position to the rex. Some parts of Gennaro were found when Malcolm was discovered. In Jurassic Park III, the characters in the story run into a Tyrannosaurus devouring its prey (Parasaurolophus according to the special effects commentary). The T. rex then gives a roar scaring the party into running away. The Tyrannosaurus then chases the group. This ironically can support either side of the debate. The Tyrannosaurus Rex may have not been able to see the group so it scared them into running so he could find them or he may have not been hungry from eating its prey, so it just wanted to scare the group away by roaring and chasing them away. Supporting this is the fact that in the Jurassic Park novel and film, the Tyrannosaurus chases a jeep away from her territory then ceases the pursuit despite the fact that she could have easily destroyed the jeep.

BehaviorEdit

Tyrannosaurs were depicted as apex predators and as such spent a lot of time following game trails. They seemed to prefer to ambush prey animals, and it was once thought that this was possibly because of their motion sensitive eyesight, which has since been disproved. It was once theorized that most prey animals freeze when afraid because the tyrannosaur supposedly lacked the ability to see stationary prey. In actuality, tyrannosaurs have excellent binocular vision. (see Eyesight Debate) The Tyrannosaurs are not random killers, however, and are less likely to attack when full.

Tyrannosaurs were known to pair off during mating, and both parents will remain with their offspring during its growth, exhibiting very powerful parenting and protective instincts, going to great lengths to ensure an infant's safety. However, when they are fully grown and independent they are more solitary, and only interact when mating or rearing young. They also bring small live prey to their young, teaching them how to kill live prey for themselves. Tyrannosaurs are territorial by nature, and will attempt to drive away or kill anything that might be deemed dangerous, whether animate or not. T. rexes are portrayed as solitary predators which only join another one of their kind in mating season.

Description and StatisticsEdit

Tyrannosaurus Rex is described as being capable of running as fast as 32 mph by John Hammond. As far as size goes, of the five Tyrannosaurs to prominently appear in the series, the adult female seen in the first film was 46 feet long and 20 feet tall, making her the largest predator to yet appear in Jurassic Park, although the size of the animatronic contradicts to this fact (see Events on Isla Nublar). The male that appeared in the second film was listed at 20 feet tall and 42 feet long. The sub-adult male to appear in the third film was listed at 37 feet long and only about 14.5 feet tall. The infant to appear in the second film appeared to be no more than 3 feet tall and just 6 feet long.

Reality suggests, though, that the largest Tyrannosaurus yet uncovered, named Sue, had a length of 42 feet and a height of 18 feet.

They display some sexual dimorphism as adults. Males have more prominent brow ridges than females. Males also have a tendency to have visible facial scaring (probably due to battles over territory with other T-rex and carnivores or mates). Skin color does also vary between sexes. Females are seen as brown/grey skinned, whilst males have a mottled green stripped pattern, females are a bit bigger than males.

Eyesight DebateEdit

Alan Grant states that the sight of Tyrannosaurus rex is based on movement, so if you don't move the animal won't see you. Alan Grant uses this knowledge to escape from the T. rex in the novel, and the first and third movies.

But, as stated (in the second novel) by Richard Levine, this is very unlikely because many animals (including humans) freeze or play dead when they are scared. If the T. rex wasn't able to see non-moving creatures, it would miss most of its prey. Richard Levine explains the previous instances in which people escaped from the T. rex by freezing with: "the only reason it would not eat you is if it was not hungry."

Supporting Alan Grant's theory is that the Tyrannosaur may not be able to see you, so to counteract this, the T. rex gives a loud roar to scare its prey into revealing their position by running away. The T. rex may then make the kill. Supporting Levine's theory, in Jurassic Park the Tyrannosaurus, when it escapes from its paddock, eats Donald Gennaro which may have satisfied its hunger. Ths may be why, instead of the Tyrannosaurus eating Grant as well, it only gave a roar to scare him out of her territory. This way the threat to her territory was eliminated.

In the second novel Michael Crichton takes the blame of the wrong theory, that T. rex‘s sight is based on movement, away from Alan Grant. It is stated that the paleontologist John Roxton wrote an article in which he stated that the brain of the Tyrannosaurus was very similar to that of frogs. Therefore, Roxton concluded that T. rex‘s sight was based on movement. Alan Grant and also the biologist George Baselton had no expertise in brain anatomy and accepted the conclusions of the article.

It is very likely that the eyesight of the Tyrannosaurus in the first novel and movie was influenced by gene-splincing with frog's DNA. This may also explain its large size. Tyrannosaurs in subsequent novels and films don't seem to share this weakness, posssibly as a result of a more complete genome.

Jurassic Park FranchiseEdit

Tyrannosaurus is one of the most popular dinosaurs in the Jurassic Park Franchise. It appeared as the main superpredators in the novels and first two films, it appears in Jurassic Park III but only in one scene fighting the Spinosaurus. It appears in every video game, mostly as a boss. T. rex is featured in all the toy lines as well.

NovelsEdit

Jurassic ParkEdit

In Jurassic Park, InGen recreated the Tyrannosaurus. Two Tyrannosaurs were present on Isla Nublar; one adult and one juvenile, although there was no interaction between them. The Tyrannosaurus had a sensitive skin, and therefore sought shelter from the sun under the canopy.

After the power cut, when the creatures break free of confinement and attack the cars. The adult didn't kill anyone, although it nearly killed Malcolm and almost ate Tim. The juvenile killed Ed Regis. The creature was also a surprisingly good swimmer, described as swimming much like a crocodile, though this is very unlikely in real life.

Grant and the children later find it sleeping as they raft down a river. When Lex coughs uncontrollably it wakes up and takes to the water, swimming after them, but soon abandons the pursuit when the juvenile Rex tries to move in on the adult's onshore kill. Muldoon later shoots it with a very large tranquilizer dart, which causes the Rex to pass out while it was trying to eat Tim, saving Grant and the children who were seeking refuge behind a waterfall. It is later shown that the adult Tyrannosaur drowned. The survivors, fleeing by helicopter, have one last look at the juvenile before it and the other dinosaurs are destroyed.

The Lost WorldEdit

In The Lost World one pair of Tyrannosaurus is present at Isla Sorna. They have a nest on the east side of the island. A team led by Ian Malcolm arrive at the island to rescue Richard Levine. But when the male T. Rex sees their car in his territory the male puts his flag on the car. The T. Rex pretends to attack Jack Thorne and Richard Levine to make them leave their territory. The team of Lewis Dodgson tries to steal the eggs of Tyrannosaurus, but the attempt fails and George Baselton gets eaten.

One of Tyrannosaur infants is wounded, therefore Eddie Carr takes the infant to the trailers and the team puts a temporary cast on its broken leg. But before they can bring the infant back, the parents have reached the trailers to collect their child. Once the child is safe, they attack the trailers and push them over the cliff.

The Tyrannosaurus tries to get Sarah Harding and Dodgson, who are hiding under a car. Sarah pushes Dodgson away and the T. rex takes Dodgson to his nest as food for the infants.

MoviesEdit

Jurassic ParkEdit

When Sattler, Malcolm and Grant visited the island, Hammond mentioned the T. rex as faster then the Brachiosaurus. Sattler was very shocked to hear about the T. rex. Grant almost fainted.

In Jurassic Park the Tyrannosaurus was to be the main attraction at Jurassic Park, but failed to appear on its first tour. Later that night Dennis Nedry debugged the island causing the Isla Nublar Incident and stranding the vehicles right near the T-Rex paddock.

After being attracted to the waving flashlight in the lead car, she attacked the car and its passengers, killing Gennaro and wounding Malcolm, apparently due either to territorial or hunting instincts (one goat would not be nearly enough to keep it full). After failing to pinpoint Grant and Lex's location (the dark lighting was the only cause for it's motion-sensitive eyes), it attempted to flush them out by pushing the wrecked lead car down the road and off a steep incline in its enclosure.

Later, when Ellie and Muldoon arrived in a jeep searching for Grant and the children, the female returned and promptly charged at their jeep, pursuing it out of the vicinity, then ended the pursuit just as they crashed through an outstretching tree.

As Grant and the children were making their way through the park, they were nearly trampled by stampeding Gallimimus, which were running from the Rex. She came bursting out of the woods and killed one of the Gallis. Her final appearance was as the unlikely heroine, bursting into the Visitor Center and killing the raptors that were about to kill the survivors.

The female in this film is supposedly the largest Tyrannosaurus seen in the series with many trading cards listing her size as 46 feet long and 20 feet tall. This makes her the largest Tyrannosaurus on record. It is commonly believed that the Tyrannosaurus was the main antagonist of the film, but this is incorrect; the raptors were the true antagonists. The Rex was merely an anti-hero or anti-villain.

The Lost World: Jurassic ParkEdit

A pair of Tyrannosaurus; a male and a female, and a baby are present in The Lost World. Roland Tembo captures the infant to lure the male into the open so he can capture it. The infant is rescued by Sarah Harding and Nick Van Owen, who then put a temporary cast on its broken leg. Unfortunately, the cries of the infant draw its parents to the research trailers. Sarah releases the infant in hopes that the adults will leave, but they attempt to dispose of the invaders by pushing the trailers over a nearby cliff and into the sea. Eddie manages to keep them from falling, but the adults return unexpectedly, angered by his efforts to save them, and proceed to tear through the car and eat him.

They later pursue the group, now traveling with Ludlow's's party and kill a number of people. Roland manages to use a tranquilizer on the male and shoot him down, which is transported to San Diego on the ship S.S. Venture.

Despite the being restrained a cage would barely allow it to move, the Rex breaks free and devours the crew during the journey and is accidentally released after the ship smashes into the dock. Dehydrated and hungry, the Rex rampages through the city in search of food and water, finding the latter in the form of a swimming pool and the former in the form of a pet dog. Although the dog's owners find the Rex after their son is awaken by its loud growl, we do not know if they are eaten or not.

Ian and Sarah retrieve the infant from a secure facility that it was brought to via helicopter. They use it to lure the adult back to the S.S. Venture, placing it in the cargo hold. Ludlow goes in to recapture it, but is trapped when the adult descends behind him and leaves the rest of the killing to the infant. Sarah manages to use a tranquilizer on the adult before an attempt was sent out to kill it, and it and its infant are transported back to Isla Sorna to rejoin the female.

The number of deaths is not specified but it seems that several were caused by panic rather than by the Rex itself. The Rex did however, cause considerable material damage, most notably knocking a bus in a Blockbuster video store. The male Tyrannosaur was 20 feet tall and 42 feet long. The female was 18 feet tall and 40 feet long. And the baby was 3 feet tall and 6 feet long.

Jurassic Park IIIEdit

In Jurassic Park III a sub-adult male Tyrannosaurus was stumbled upon by Grant and the others while feeding on the corpse of a dead dinosaur (either that the rex hunted or scavenged from smaller theropods) and immediately gave chase, possibly to protect its kill or chase the humans away, and crossed paths with the Spinosaurus. The two carnivores engaged in a vicious battle and the Rex seemed to have the upper hand in the fight until the Spinosaurus grabs the neck with its jaws, snapping the neck of the Tyrannosaurus who falls dead and presumably eaten by the Spinosaurus.

Tyrannosaurus is later mentioned when Eric Kirby tells Grant that he collected T-Rex pee, Grant ask Eric how he collected the pee, Eric simply said that he should not know. it is unknown if the pee belonged to the same sub adult T-Rex or to another T-Rex. it is it is likley another trex because eric states that it is big and the one seen on jp3 was slightly smaller than avrage.

According to official size-charts, the Tyrannosaur from Jurassic Park III was 37 feet long and 14.5 feet tall, making it smaller than the previous Tyrannosaurs, and possibly not fully grown yet. It is not be the baby Tyrannosaurus from The Lost World: Jurassic Park because the infant was refered to as a female while the one in JPIII is male. Supposedly, the reason for his untimley (and controversial) demise is because of his age. Being a sub-adult apparently gave the notably young Tyrannosaur a downside of his jaws not being totally all that strong, and therefore, gave the older Spinosaurus the advantage of having stronger, more neck-snap friendly jaws.

KillsEdit

Jurassic Park Novel/FilmEdit

• Ed Regis (novel only)
• Donald Gennaro (film only)
• The Big One (film only)

The Lost World Novel/FilmEdit

• George Baselton (novel only)
• Lewis Dodgson (novel only)
• Eddie Carr (film only)
• Carter (film only)
• Robert Burke (film only)
• David Koepp ("Unlucky Bastard" in film only)
• Peter Ludlow (film only)

Jurassic Park IIIEdit

• None

Jurassic Park: The GameEdit

• Billy Yoder
• Nima (If player chooses the embryos)

AdventuresEdit

SurvivorEdit

Tyrannosaurus is featured in Survivor. Eric Kirby first meets a T. rex on the beach, a T. rex is also seen catching a Pteranodon.

PreyEdit

Tyrannosaurus is featured in Prey.

Jurassic Park inspired gamesEdit

Tyrannosaurus has appeared in all Jurassic Park games. Listed below is a list of notable games featuring the dinosaur.

Jurassic Park (arcade game)Edit

Tyrannosaurus is featured in the arcade version of Jurassic Park. In the game the player encounters the T. rex three times within the game and is boss at all times. In Area one the T. rex is the first dinosaur you encounter and is chasing you while you have to shoot at her head. At the end of Act two you encounter it again and you must defeat it the same way as the first time by shooting at its head, this time however the rex is harder to kill and has a health bar. At the end of the game in Act four you encounter the T. rex along with a second and you must defeat them at the same time by shooting at their heads, just like the previous time both of them also have health bars.

The Lost World: Jurassic Park (arcade game)Edit

Tyrannosaurus appears in the arcade adaptation of the The Lost World: Jurassic Park; both the male and the female Rexes from the film served as the game's bosses, the female as first boss in Stage 1 and the male as last boss in Stage 5 after the female. The baby Rex is featured in Stages 4 and 5.

Jurassic Park: Chaos IslandEdit

Tyrannosaurus appears in Jurassic Park: Chaos Island, as one of the strongest dinosaurs and the hardest to kill. The baby Rex is also featured in two of the missions. In the bonus mission taking place during the San Diego incident, the player plays as the T. rex; who oddly in the game is female, instead of male. The T. rex in the game looks like the Bull T. rex from The Lost World Series 1 toyline.

The Lost World: Jurassic Park (video game)Edit

Tyrannosaurus is featured in the console adaptation of the The Lost World: Jurassic Park film. It serves as both a playable character and the final boss of the game.

Warpath: Jurassic ParkEdit

Tyrannosaurus is featured in the video game Warpath: Jurassic Park. Its attack patterns were the same as Acrocanthosaurus and Cryolophosaurus and has 3 colors: blue, green, and blue with orange stripes. Its arena was Freighter Deck.

Jurassic Park: TrespasserEdit

In Jurassic Park: Trespasser, Tyrannosaurus is an enemy. It is said that InGen made seven Rexes, meaning seven kings of the prehistoric world. The colors of some of the Rexes were based on The Lost World: Jurassic Park. It is first seen in the Industrial Jungle and last seen in The Ascent's first part. The Tyrannosaurus in Ascent 1 is called the "Alpha Tyrannosaurus" according to ingame files. The Alpha Tyrannosaurus also makes an appearance in the Trespasser Demo as well. In addition, another Tyrannosaurus skin didn't make the cut. This Tyrannosaurus was a brighter green than the normal green Rex. It is unknown why this Green Tyrannosaurus was scrapped but it might have had to do with the fact that the skin was too high in quality.

Jurassic Park: Operation GenesisEdit

Tyrannosaurus is one of the main dinosaurs in the game Jurassic Park: Operation Genesis, as some missions of the PC and PS2 versions of the game feature the Rex. It is a 5-star carnivore, and is described as possibly the most powerful dinosaur in the game. It will devour guests, swallowing the guest whole after first shaking them around violently, making it mirror the death of Gennaro in the first film.

The Rex in the game is green, reflecting the appearance of the specimen seen in Jurassic Park III. It can be found in the fossil hunting base in the Judith River Group along with the Corythosaurus, Styracosaurus, Ankylosaurus, Pachycephalosaurus and it's cousin is an early Tyrannosaurid, Albertosaurus. Tyrannosaurus have "death duels" with Spinosaurus , possibly trying to imitate the style of the movie, Jurassic Park III. It also "death duels" with Triceratops, Stegosaurus, and Ankylosaurus. In the game the Rex is at the same height and length in Jurassic Park III.

Jurassic Park: The GameEdit

Tyrannosaurus also appeared in Telltale's Jurassic Park: The Game as one of the main antagonists. The T. rex is the same one seen in the first film.

It is first seen in Episode 1, where it faces off against Lady Margaret, the alpha Triceratops, almost killing Gerry Harding, his daughter Jess, who had come to visit the island earlier, and a very ill Nima Cruz, who was unconscious at the time. The two of them narrowly escape with their lives and wait out the night in the Triceratops Maintenance Building as the two titans clash.

The T. rex then makes its second appearance in the Visitor Center. After a harrowing climax, Gerry and Jess make it outside, managing to hit the T. rex with a few tranquilizer darts. Nima, now fully recovered, helps them drive away the predator by sending the jeep wheeling away, and the T. rex, now in a drunk, confused stupor due to the darts, follows it.

It appears halfway through Episode 2, chasing the helicopter with the characters inside it.

Later, it appears in the clearing where Yoder, Oscar Morales and Nima crashed the helicopter. Yoder and Nima, along with the Parasaurolophus that the predator is chasing, run to the area near the water tower and the tunnels. The T. rex loses the Parasaurolophus, but kills a loitering Velociraptor, gaining access to another Parasaurolophus its pack had already killed.

Yoder has to sneak past the T. rex to retrieve the embryo can that he dropped.

It makes its final appearance by the dock in the final climax of the game, eating Billy Yoder. It also eats Nima Cruz if the player chooses the ending to rescue the embryos. The climax culminates to the T. rex chasing Dr. Harding across the cargo bay before he finally makes it onto the boat, with Jess and with or without Nima. If the player chooses the opposite ending to rescue Jess, it steps on the Barbasol can, destroying the embryos. It's very likely that the T. rex was destroyed in the napalm bombing.

In Laura Sorkin's personal journal, she hypothesizes that the movement-based vision of the T. rex was caused by Henry Wu's frog DNA insertion rather than being a natural feature of the animal. However, she also admits that the disability makes the animal safer to observe.

Toy LinesEdit

T. rex has appeared in all toy lines.

GalleryEdit

MediaEdit

Click here for images and videos related to this article.

External linksEdit

• JP Legacy

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Jurassic Park Dinosaurs
Baryonyx • Brachiosaurus • Dilophosaurus • Gallimimus • Herrerasaurus • Metriacanthosaurus • Parasaurolophus • Proceratosaurus • Pteranodon • Segisaurus • Stegosaurus • Triceratops • Tyrannosaurus rex • Velociraptor

Jurassic Park III Dinosaurs
Ankylosaurus • Baryonyx • Brachiosaurus • Ceratosaurus • Compsognathus • Corythosaurus • Parasaurolophus • Pteranodon • Spinosaurus • Stegosaurus • Suchomimus • Tyrannosaurus rex • Velociraptor

Playable Warpath Dinosaurs
Acrocanthosaurus • Albertosaurus • Ankylosaurus • Carcharodontosaurus • Cryolophosaurus • Giganotosaurus • Megaraptor • Pachycephalosaurus • Spinosaurus • Stygimoloch • Styracosaurus • Suchomimus • Triceratops • Tyrannosaurus rex