How can Rexy be in JW?

"Rexy" can be in it, because the notion is awesome and the screenwriters say so. That's how. (Assuming it's really her. And I hope so.)

It might be modified to live longer.

I'm not claiming that she won't appear, I'm saying that using Rexy is strange, for the motivations I already pointed out.

I don't think so. Rexy is basically a Tyrannosaurus with amphibious DNA. If anything, the latter would have shortened her life. Amphibious usually dead at 15 or so.

 its jurassic park, the can make a new species of dinosaur. so why not let them live longer... for the park its a money safer. still its a movie and everything is possible in movies ;)

But those aren't monsters (even though they're kind of), but dinosaurs (even though they're more like hybrid, rather than true dinosaurs).

@Gigadino interesting topic, however JW and every other JP aren't based on facts. If they where Rexy and the raptors would be covered in feathers, Spinto would be walking on all fours, etc.. I see your point on how Rexy would already be dead and based on facts if it was a real tyrannosaurus it would be. Jurassic Parks dinosaurs where genetically modified which explains why the Rex can't see you if you don't movie. Also my point is that along with the dinosaurs being genetically modified, the screenwriters of the movie can make this Rex be Rexy or the baby from the lost world or anything else because they are not based on facts. Their is no way to bring back dinosaurs and at that make D-Rex. I'm hoping it is Rexy, but as many mentioned before the scars are on the wrong side. So basically their is a 50-50 chance of this being Rexy or another Rex. It's all based on what the screenwriters want.

How could Rexy be in JW? The magic of movie logic! Thats how.

Plus movie logic... That works too.

It's everbodies favorite Jurassic Park charcter! Mr. DNA!

WAAAAAIIIT Hold your horses just for a second.

Following Novel cannon, The Island had been under construction for 5+ Years... Not twenty...

Rexy can't be anymore then 5 or less Years old in the Events of Jurassic park-- Assuming she's still at a Juvinile Size (Or phasing out of it in the film) Makes more sense then Rexy being 50+ Years old.

(Plus the book did mention something about them attaining Adult hood in five years or less)

Lets say, Rexy was Hatched in, 1988, Thus giving her an Age of 5 Years when the park fails. 

And then we add The Twenty Two Years inbetween films, And Voila! Rexy is a total of 27 years old. Meaning she's MOST LIKELY Near death... However, Taking into account how These have been Tampered the hell with, I'd give her 5-10 more years.

So a total Life span of an Ingen Rex would be... Forty-Ish Years....

Impressive. 

Paden, I think that's the best explanation we have for how the original Rex can be in the movie.

Masrani is still under the illusion that they are in control.  But they will pay dearly...

I agree with both PADEN and ALPHADINO65 on this fully!

I was aware that Hammond started building the park 5 years before than the first film, but that's strange if you ask me. A 5 years-old Tyrannosaurus would be less than 1 ton! Not even near to Rexy. Plus, a such juvenile animal would look much different from a fully grown one:

Bear in mind that the small one was 11-years old, wich means that it was even older than 5. Look at Rexy:

Do you think that its skull look like a juvenile's?

@GigaDino

A valiant point...

But again... We have to factor in the Genetic Tampering Hammond Did. I understand that these Dinosaurs NORMALLY, Matured at a Third of the Rate of Humans, But what if hammond sped that up?

Again, The book mentioned they attained adult hood in 5 years... Maybe it's the Captivity and Engineering that Alters it?

ALSO... Maybe Hammond had also Been "Experimenting" Before the park even started...

Which would make rexy Incredibly old, So I think we could probably cross that off...

So now we have it narrowed down to Genetic Engineering and Captivity that has allowed her to attain said size in just Five years.

The Ingen Field Guide Unfortunately Neglects to mention what Hammond tampered with, And the Rate of Maturity for their dinosaurs... 

So, It's got to be the Engineering and Captivity...

With Regular Supplements of Food and Such, A dinosaur could grow to maturity at an Excelerated Rate. Plus, Ingen does mention that they fed them Sheep Supplements that Caused DX in the book, But that was dropped in Movie cannon.

The engineering most likely extened it's lifespan the best it could, But Genetics isn't a full proof thing. Ingen would want a Product that attained Adulthood Quickly, And maintained a long life. After a couple attempts on Site B They could've definately gotten it Right... 

So, Final conclusion:

Due to the Genetic Engineering and Captivity, The T-rex on Site A would most likely have been able to live to an Estimated age of 40 Years, With the current age of 27 Years or More. 

@Carnosaur

Don't be so worried.

Colins not a fool.

If you noticed, On the same page that Supposedly "Features" Rexy, Theirs another Drawing above it, That doesn't have any scars...

So, Perhaps maybe it's just Concept art.

Do remember, Its a very large area that they're keeping Rexy in, So I'd say that there's way more then just her in there... If she's even in there... 

Maybe it's a clone of rexy, and scars are carried over because freak genetics and hollywood magic?

^Good idea, SF!

the other image does indeed have scars. there hidden beneath the rex logo. if you look close enough you can see claw marks from where the big one slid onto the other side of rexy before getting grabbed 

@Silver_Falcon, you have some of the best theories with this! :)