Plot hole: The spinosaurus manages to smash through a metal reinforced wall designed to stop dinosaurs getting past it without too much effort, yet it can't get through a wooden gate secured by some metal bars. It makes no sense.
Jurassic Park III (2001)
Ending / spoiler
Directed by: Joe Johnston
Starring: Sam Neill, William H. Macy, Laura Dern, Alessandro Nivola, Téa Leoni, Trevor Morgan, Bruce A. Young
Eric is alive and saves Grant from the velocoraptors. Cooper, Nash and Udesky are killed, and Billy also appears to die after rescuing Eric from a nest of pteranadons. After escaping the spinosaurus and the pteranadons, Grant, Amanda, Paul, and Eric are confronted by the raptors. They return the eggs Billy stole from the raptors' nests, and the raptors leave without harming them. They are rescued by both the navy and marines, who were contacted by Dr. Ellie Sattler, Grant’s colleague who he called on the satellite phone just before it went dead. An injured Billy has also been rescued and is aboard the waiting helicopter. On the chopper, Alan and Eric see the pteranadons, who escaped from their cage, flying away from the island.
Adam
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Trivia: The scenes with the flying dinosaurs were supposed to be in the original movie, as it was part of the book Jurassic Park, but Spielberg decided not to include this in the first movie due to budget restraints.
Question: In the end, the Pterosaurs fly away from Isla Sorna for a new home. Where on Earth would they go and wouldn't they attack and kill any human or animal there?
Answer: The island was located west of Costa Rica in the pacific so its likely they are headed for the Americas or Galapagos islands. They won't likely start hunting on animals and humans as they are thought to be fish eaters and thus would stay near the coast and avoid contact with land animals, especially predators. The reason they attack the humans in the bird cage is because of malnutrition and captivity related stress.
Wrong argument, because in Jurassic World, we see them attacking humans.
For the same reason I have given earlier, probably. You don't see them eating humans in any case.
Suggested correction: The Spinosaurus used its full body force to smash the fence. The gate, being a smaller target, was too small for the Spinosaurus to use its full body force.