Visible crew/equipment: When the two Explorers start off on the tour of the island and the vehicles reach the Dilophosaur exhibit, there is a shot of Lex, Tim and Gennaro, looking out their Explorer's passenger-side windows. Right above their heads, fastened directly above each window, are wind-screen covered microphones. Obviously placed there to pick up actor dialog, neither of these particular mikes are seen again before or after this shot.
Continuity mistake: When Ellie is turning on the circuit breakers she turns on "Herbivore Feeding Compound", "Visitors Cntr. Compound", "Visitors Cntr. Control Rm", and goes to press "Visitors Cntr. Tour". In the next shot of her she presses "Visitors Cntr. Control Rm." and "Visitors Cntr. Tour" again.
Continuity mistake: When the T-rex breaks out, on the first car, the one with the kids in it, only the regular headlights are on. When it goes over the "cliff" all the headlights are on.
Continuity mistake: When Tim is up the fence Grant starts counting for him. When he starts to count, Lex and him are next to the fence. In the next shot, Lex and him are much further away from the fence.
Continuity mistake: When Hammond watches the vehicles leaving the visitor center the first car is passed the main steps. In the next shot of the car, they are just moving past the steps.
Continuity mistake: Just after Gennaro suggests a coupon day at Lunch the camera goes to Hammond then back to Gennaro.In the change from Hammond back to Gennaro,Malcolm's head changes directions from facing left to right.
Continuity mistake: In the opening scene Jophery is being attacked by the dinosaur in the cage and Muldoon is holding onto him while the workers shock the dinosaur. Muldoon's hat is on in one shot, then the camera cuts and it is off while the camera is dollying forward, then it is on again. This happens just as he is about to shout "SHOOT HER! SHOOT HER!"
Continuity mistake: When the car first falls down the tree, you can see the adjustable headlight on the right tilts forward. In the next shot when the car hits the branch just before it hits Dr Grant, it does the same thing again. However in the next shot, the headlight is once again facing forwards.
Continuity mistake: When Nedry hears the Dilophosaurus and turns around, he's holding a tow cable. It's gone in the next shot.
Continuity mistake: The T-rex completely destroys the outdoor bathroom facility that the lawyer ran into. The lawyer is perched atop the toilet and the remaining damaged wall behind him is tilted backwards. When the camera cuts to a shot where the lawyer is seen from behind and the T-rex is just about to eat him, the wall is missing. When it cuts back to a front shot, the wall is back again.
Visible crew/equipment: In the scene where Grant and Lex are hanging from the fence cables on the wall in the Tyrannosaur paddock they start swinging back and forth to avoid the truck that is about to fall on them. Look closely in some of the closeup shots, you can see that the cable that Grant is holding on is actually a safety rig. The harness straps are visible.
Continuity mistake: At the end of the film, they are in the helicopter and in the air, you see a shot of inside the helicopter. Outside the opposite window is land, then when the shot changes to view the large birds, they are flying above water. Inside is always land, outside is always water. Then when the camera pans out to view the helicopter fly away, it is above the ocean with no land in sight.
Continuity mistake: After Nedry has sprayed the shaving cream on his hands, (and after placing it on the pie) we see a sideview shot where he lowers his hands to his sides. The shot changes to the front and his hands are up again, drying his hands off with a napkin. It was too fast to move his hands.
Continuity mistake: In the scene from behind Dr. Grant we can see the cow being lifted straight up. You can see that the cow is rather close to Dr. Grant. Then the scene cuts and the cow is already in the middle of the top of the Velociraptor paddock. Judging from the distance between Dr. Grant and the paddock from the previous wide-shot, and the fact that Dr. Grant made no big moves, the crane couldn't pass that distance between the two shots.
Continuity mistake: As the T-Rex is looking for Lex and Dr. Grant, Dr. Grant says "Don't move. He can't see us if you don't move." When he says this he is to the left of the wheel arch. Then, the T-Rex blows the hat off Dr. Grant who, with Lex is at the end of the upturned 4x4 when the T-Rex knocks it but in the next scene they have moved and are not at the end of the 4x4. They are back where they started, to the left of the wheel.