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But that was a different T-Rex from the original one in Jurassic Park, which is the same super predator that is now free to roam Northern California in Jurassic World Dominion. The climax of Spielberg's 1997 sequel saw a captured T-Rex brought from Isla Sorna AKA Site B to San Diego, where it got loose and stomped around the city and suburbs. The rampaging T-Rex in Jurassic World: Dominion's prologue's present-day also connects back to a similar rampage by a Tyrannosaur in Steven Spielberg's The Lost World: Jurassic Park. What InGen did was design their dinosaurs to look the way people would imagine the prehistoric creatures would look since they had the power to manipulate the animals' genetics. So, Jurassic Park's T-Rex isn't an exact duplicate of the super predator that died during the Cretaceous period, and this explains why there appears to be hair, fur, or possibly feathers on the dead T-Rex's body 65 million years ago. Hence, InGen used frog DNA to complete the data strands and clone their dinosaurs. Of course, Jurassic Park's origin story also established that InGen was never able to get complete DNA strands from the blood they harvested from mosquitos trapped in amber. The cleverest part of Jurassic World Dominion's prologue is that it doesn't retcon Steven Spielberg's Jurassic Park but adds a new level of nuance to the cloned dinosaurs' origin story that fans had long accepted at face value.
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