Revealing mistake: After Owen gets a lasso around the neck of the Parasaurolophus and is pulling on the rope, the noose loosens when it should remain taut. Also, the knot was in the center-front of the dino's neck and should have stayed there, but it somehow moved a couple inches clockwise. As Owen continued holding the rope tightly, the knot should have moved back to center-front or be too tight for the dinosaur to breathe. Next, based on the angle of the rope, the knot would be near the top of the neck. (00:08:41 - 00:09:30)
Revealing mistake: When the truck stealing Blue's baby drives off just as Owen spots it, dirt tracks are visible in the fresh snow from previous takes. (00:28:10)
Revealing mistake: While in the helicopter, Alan's eyes do not align with the location of the Dreadnoughtus. Alan is looking to his far right before the helicopter even approaches the dinosaur and it is shown across the front of the screen. Alan's eyes then stay fixed straight ahead (even after passing the dinosaur), giving the impression he's looking at the dinosaur, but he would have needed to keep turning his neck to the right as the helicopter flew past in order to keep it in sight. (00:35:14)
Suggested correction: It's a common movie trope. The two things aren't happening in sequential order. They're happening at the same time. Alan isn't looking before the helicopter approaches the dinosaur...you're seeing the inside of the helicopter as it approaches and passes the dinosaur. They're happening at the same time.
Revealing mistake: Before the Jeep roll-over, the four people inside were looking upward through some type of 2"x2" fencing (?) as the roof to see the bugs on fire in the sky. The Jeep had a luggage rack and luggage on top, so the "fence" as part of the roof did not make any sense (other than for filming purposes). (01:43:55)
Revealing mistake: When Owen rides his bike on the runway towards the plane, his stunt double is very noticeable because he doesn't resemble him at all.
