* AwesomeDearBoy: When an interviewer asked Creator/WilliamHMacy why he accepted a role in ''Jurassic Park III'', he replied "Because I'm 50 years old and I [[EverythingsBetterWithDinosaurs get to fight a dinosaur]]."
* DanBrowned:
** The Spinosaurus being able to snap a ''T. rex'''s neck; the third movie's "dinosaur consultant" went on record claiming this was actually possible. In reality, a Spinosaurus's jaws were too weak to do so and their hands and arms were anatomically incapable of holding on to the T. rex in the manner it does.
** Not to mention, ''T. rex'' had one of the thickest necks of all predatory dinosaurs, which some scientists speculate it used to pick up medium sized dinosaurs and shake them to death in its jaws, whereas Spinosaurus had a long, thin neck to allow it to move its head quickly into the water to catch fish using its long, narrow jaws. It would be like trying to get a pelican to try to snap a bulldog's neck. Also, the T. Rex had one of the strongest sets of jaws, proportionally, of all creatures to ever exist. The Spinosaurus wouldn't have been able to survive one bite to the neck. Sure, maybe the T. Rex was off its game or something...
** Just for grins, after the movie shooting was done, the effects team pitted the "Spinosaurus" animatron against the "T-Rex" animatron; the T-rex won handily.
** {{Lampshade|Hanging}}d by Dr. Grant's remarks at his lecture at the beginning of the movie: he does not consider the Jurassic Park creatures true dinosaurs, but rather genetically engineered monsters. This is shown again by the completely impossible behavior of the Pteranodons. The actual inaccuracies and accuracies in the pterosaurs of the movie are too numerous to list here but anyone who would like to actually look it up can read the StockDinosaursNonDinosaurs page, which has a whole folder dedicated to describing pterosaurs.
* HeyItsThatGuy: [[Series/SesameStreet Mr. Noodle's brother Mr. Noodle]]! [[http://www.youtube.com/watch?v=C9tq9l1ZxX8 Nooo!]]
* RefittedForSequel: Many scenes in the film are from the books: The river chase and aviary from the first and the cloning lab from ''The Lost World''. It's been joked that ''III'' exists mainly to use up all the bits from the books they couldn't fit into the first two movies.
* ScienceMarchesOn:
** The incorrectness of the Jurassic Park Dinosaurs is {{Handwaved}} and [[JustifiedTrope Justified]] by Grant in that these dinosaurs are mutants, not real dinosaurs (thanks to having their DNA spliced by frog DNA.) One of the changes includes putting some feathers on the head of the raptors.
** Around the time this film was made, it was not yet known that pterosaurs didn't rear their young like birds.
** In 2014, a more complete skeleton of Spinosaurus [[http://www.bbc.com/news/science-environment-29143096 was found]], which showed that while still a big carnivore, the Spinosaurus had an even more bizarre shape and was suggested to be quadrupedal and adapted for an aquatic lifestyle, as its hind legs were unconventionally short and had webbed feet which may have made it very difficult for it to stand on two legs, let alone walk. Basically making him look like an overgrown Dimetrodon! This new reconstruction has not gone [[http://qilong.wordpress.com/2014/09/12/the-outlaw-spino-saurus/ without]] [[http://www.skeletaldrawing.com/home/theres-something-fishy-about-spinosaurus9112014 criticism]], although the researchers have also [[http://markwitton-com.blogspot.de/2014/09/the-spinosaurus-hindlimb-controversy.html?spref=tw responded]] to the detractors.
*** Also others have pointed out that the forelimbs in the new reconstruction were poorly adapted for quadrupedal movement and that even with the super-short hind limbs, Spinosaurus would have still been capable of [[http://theropoda.blogspot.it/2014/09/spinosaurus-revolution-episodio-iv-una.html bipedal]] [[http://hyrotrioskjan.deviantart.com/gallery/#/art/Mr-Weird-483489664?_sid=528e68f5 movement]]. More data is needed to clarify this situation.
* WhatCouldHaveBeen:
** Dr. Malcolm was in the original script, but Jeff Goldblum had to drop out.
** A ''[[http://upload.wikimedia.org/wikipedia/commons/3/31/Baryonyx_BW.jpg Baryonyx]]'' had ''Spinosaurus''' role in the original script. This was referenced in-movie. Billy guesses the dinosaur that attacked the plane is a Baryonyx, but Grant corrects him, saying Baryonyx didn't have that impressive sail on the back.
** The ending was changed a lot; in the original script, the Spinosaurus was attacked by raptors and killed at the end; this was probably changed because in the first movie, the raptors were no match for the T. rex, and having them bring down an even bigger carnivore that actually killed a T. rex earlier in the film wouldn't seem realistic. [[note]]To be fair, the T. rex only fought one raptor, having killed the second one by surprise.[[/note]] Also, the helicopter was to be attacked by Pteranodons. And they also considered to have the Spinosaurus attack the marines.
** One of the first scripts was about a group of teens stranded in the island and being eaten one by one. It was described as ''{{Friends}}'' with dinosaurs... and quickly dropped.
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