Continuity mistake: Just after Timmy puts the goggles on and climbs into the back with Lex she says, "don't scare me" and turns to face him as he crawls into the boot. In the next shot she is immediately facing in completely the opposite direction, looking through the window. This is just before Timmy says, "oh cool, night vision". (00:58:35)
Continuity mistake: When the explorers break down outside the T-Rex paddock, Grant 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). (00:59:00)
Continuity mistake: 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. (00:59:15)
Continuity mistake: Just before the Tyrannosaurus Rex escapes from its pen, it drops a goat's leg on Lex and Timmy's car. When it comes back to attack them, the leg is gone. Then it appears and disappears. (01:00:25)
Continuity mistake: When the T-Rex is approaching, the lawyer runs into the bathroom stall and the roll of toilet paper is mounted horizontally. After Ian runs towards the bathroom away from the T-rex, in the shot of the panicked lawyer as he shuts the door the toilet paper is now mounted vertically, but when the T-Rex knocks down the stall walls, leaving the lawyer sitting out in the open, it is again mounted horizontally. (01:00:50 - 01:04:45)
Continuity mistake: When the T-Rex first breaks out of her paddock, she walks between the two Explorers which look to be only a short distance apart- maybe one or two T-Rex-steps between them. But later when the T-Rex is by Grant's Explorer and walks to the one with the kids in it (when Grant is saying "Turn the light off") she has to take about five steps to get there. (01:01:25)
Continuity mistake: When the lawyer jumps out of the Explorer (just before the T-Rex approaches) he leaves the Explorer door open. In the next two shots the jeep door is closed, but when the T-Rex shows up, the boy moves to the door and closes it. (01:01:40)
Continuity mistake: When Lex and Tim are in the car and the T-rex is attacking them, at one point the T-rex smashes through the roof of the car and the clear roof falls through on top of Lex and Tim. The T-rex breaks it with her teeth, but in the next shot it's whole again. (01:03:20)
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. (01:03:20 - 01:09:10)
Continuity mistake: 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. (01:05:00)
Continuity mistake: When the camera zooms in on Dr. Grant helping Lex out of the crushed Explorer one of the hood level fog lights is missing (both should be missing considering the Rex stepped on the hood earlier), but they are both intact in the following scenes. (01:05:10)
Continuity mistake: When the T-Rex has come and nearly destroyed the car, Grant is trying to get Tim and Lex out of the car. Lex then screams and this causes Grant to turn around and cover her mouth. They are sitting on one side of a tyre on the car when Grant has his hat on. In the next shot (when the T-Rex has blown Grant's hat off) they are on the other side of the tyre. (01:05:30)
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 shot they have moved and are not at the end of the 4x4. They are back where they started, to the left of the wheel. (01:05:30)
Continuity mistake: In the scene just after the T-Rex snorts Dr Grant's hat off you can see him and Lex with their backs almost right against the overturned Ford Explorer. The T-Rex then butts upside down vehicle causing it to spin, only now, they have nearly a 3 foot head start. (01:05:35)
Continuity mistake: In the T-Rex attack, once the car has flipped and the T-Rex is turning it round, it pushes it a full 180 degrees to end up beside the wall, then next shot and the T-Rex pushes it more to end up in the same place. (01:05:45)
Continuity mistake: When the tour trucks are stopped outside the Tyrannosaurus Rex paddock, we are shown a goat in a cage (inside the paddock) that appears to be at the same level as the road (outside). However, when Dr. Grant and Lex go over the wall, the ground is several stories down. (01:06:10)
Continuity mistake: Just as they start going down the wire into the T-Rex paddock, in addition to the problem mentioned above with the ground level suddenly dropping, take a look at the wire. In the first shot underneath them it's curling up and towards the camera, like it's caught on something, then it changes angle, and the wire's hanging straight down. (01:06:15)
Continuity mistake: When Nedry gets lost at night, he crashes into a mud bank on the front end of his Jeep. When we get a shot of Nedry getting out of the car, he looks to see what stopped him. The obstacle has changed to a log caught on the back tyres. No more mud bank. (01:08:05)
Continuity mistake: When Nedry is trying to escape, and his jeep gets stuck on the mud bank, the camera shows the road below him, and there's an arrow pointing straight ahead. A bit later, the camera shows it again, and the arrow's now pointing left. (01:08:20)
Continuity mistake: Just after Alan gets Lex out the pushed over truck, the T-Rex walks up to them and it is standing about an inch away from them, but in the next shot, there is no sign of it, then reappears in the next shot. (01:08:25)
Chosen answer: They all left on the same boat Nedry was trying to get on with the embryos. You can hear Samuel L Jackson's character announce that the boat will be leaving at a specific time and everyone had to be there or be left behind.
Shannon Jackson