Continuity: In the opening scene, when Jophery falls from the cage, he lands on his front. The shot changes to a wide view and he is now on his back and rolls over to get up.

Continuity: After being electrocuted, Tim flies down vertically, but Dr. Grant catches him horizontally.

Continuity: Near the beginning, when the helicopter lands on the island, the Jeeps are already waiting in position. In the next shot they reverse up to the helicopters again.

Continuity: After Nedry crashes his Jeep he jumps out and says, "there's the road!" The camera pans across to show the sign to the East Dock with the arrow pointing 'straight-on'. After he slides down the waterfall the sign is shown again but the arrow now points to the left.

Revealing: In the opening scene Jophery is being attacked by the velociraptor. As the camera pans along the outside of the cage, in between the flashes one can see his legs inside the cage and that nothing is actually attacking him.

Continuity: When the egg is opening, the leaves underneath change from dry and crushed to big and green between shots.

Factual error: The way the car "slides" down the tree as Grant and Tim are climbing down is very unrealistic. Rather than hugging the trunk like it does, the branches (some of which are thick enough) would deflect it away from the trunk.

Visible crew/equipment: In the scene where the cow is being lowered into the raptor cage, the camera shows the ferns and plants shaking. If you look closely, there is the back of a man in a white shirt shaking the plants.

Continuity: During the opening sequence a couple shots show it raining where other shots have no rain and a dry environment. First noticed after Muldoon says "Jophery raise the gate" and when the gatekeeper falls off the transport box.

Revealing: When Dr. Malcolm gets thrown through the toilet door by the T-Rex, it is most obviously a stuntman that lands on the ground and gets covered in palm leaves.

Deliberate "mistake": At the end of the kitchen scene with the kids and the raptors, one of the raptors chases Tim as he runs to the door. As its doing this, Tim is running away with a bad limp, then as the raptor gains speed and is close behind, Tim's legs are perfectly fine as he sprints out the door and shuts it.

Continuity: When they first land on the island, the actors' positions change. In the interior shots, Satler is sitting to Hammond's left during the descent. When the copter door opens, Hammond is on the other side, his left side facing the door. They would not have switched places during the descent.

Continuity: Right before Lex and Tim scream when the T-Rex roars at them Lex is holding a flashlight, in the first shot you can see that Lex is staying completely still with the flashlight facing towards the driver seat but in the next shot you can see that it is pointing out the passenger side window.

Revealing: In the shot immediately following Ellie turning on the circuit breakers when the raptor attacks her, we see a light bulb touching its head. There is smoke appearing where the bulb is in contact with the raptors head, the power has been off for a while the bulb would not be that hot after being on for just a few seconds.

Continuity: When Timmy hears the T-Rex stomping and takes off the night vision goggles, his hair in back comes up. In the next shot, his hair is down again.

Continuity: We see Dr. Grant helping Tim out of the car that has just fallen into the tree, then suddenly, they are about 5 feet under the car though the dialogue and split second cut suggest that they had merely just gotten out of the car and had not yet began their descent.

Revealing: In the scene where Ellie runs from the Raptor the stunt double who runs for her has on a wig that looks nothing like her real hair. It just looks very fake.

Continuity: In the scene where the explorers break down outside the T-Rex paddock, Malcolm can be seen filling a flask with rainwater out of the door. When the angle changes the door is closed, then the angle changes again and he is still collecting rainwater with the door open (fixed in the VHS Widescreen and "Ultimate Collection" DVD box set versions).

Revealing: In the kitchen sequence when Lex almost falls from the hole in the ceiling, she looks straight back up at the camera. Rather than cut away from the stunt double at this point, they actually bothered to CGI the actress' face over the top so they could use the sequence right through. Unfortunately you can tell what's been done.

Continuity: When we first meet the dinosaurs Alan is sitting in front of a lake. Ellie is standing right in front of him. After the cut Ellie comes to Alan from behind and puts her hands on his shoulders.