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.
Other mistake: When Alan, Lex and Tim are climbing over the perimeter fence and the buzzer begins to sound, Alan and Lex have come off the fence on the other side and Tim loses his footing further up on the fence. He begins to pull himself up, but in the very next shot, a person is seen coming down the fence closer to the ground in khaki shorts and boots. Tim hasn't moved from his position further up, so it can't be him, and Alan and Lex were already on the ground, and did not have khaki shorts on.
Continuity mistake: In the scene with Dr. Grant and Lex standing nose-to-nose with the T-Rex, the dinosaur sniffs at the humans, then turns its attention to pushing the Explorer around as Grant and Lex scramble for safety. When the T-Rex starts pushing the Explorer, a profile shot shows that the monster's foot is no more than two yards from the vehicle; yet, in the immediate next shot from the monster's point of view, the T-Rex is obviously positioned 10 or 15 yards away from the Explorer, much too far away to be pushing the vehicle.
Add timeCharles Austin Miller
Continuity mistake: After the first T-Rex attack, Tim's rover is still stuck in the tree, and Dr. Grant and Lex arrive at the base of the wall adjacent to a gushing storm drainage pipe. Dr. Grant assures Lex that he will return and goes to assist Tim. Whimpering, Lex clambers up to take shelter in the drainage pipe. However, there is now an inexplicable blue light glowing from deep inside the drainage pipe, illuminating Lex.
Add timeCharles Austin Miller
Continuity mistake: In the final rotunda scene, when the rex is chewing the first velociraptor, there is a skeleton piece (a herbivore tail) hanging beside it. In the next shot, when the second velociraptor jumps rex, this piece of the skeleton is no longer there.
Add timeHenrique Zimmermann Tomassi
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: 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.