Revealing mistake: When the Spinosaurus pulls Nash out of the plane you can see a little section of animatronics equipment behind the Spinosaur that's supposed to be the stand. (00:23:45)
Visible crew/equipment: Just after hearing the Spinosaurus roar, bright studio lights are reflected on the front of the plane when it is turning to take off from Isla Sorna. (00:19:45)
Revealing mistake: In the beginning of the movie where Billy and his female palaeontologist co-worker are working on a Raptor fossil you see him lean on the ground to brush some dirt away. As he leans on the supposedly hard rock you see it give a little, like it was Plaster-of-Paris on top of plywood.
Continuity mistake: Near the beginning as Alan is giving his speech, the MC woman is standing, then sitting, then she is standing again but then sits down. (00:08:05)
Continuity mistake: At the start of the film we see two people parasailing. In the close up shots we see that the young boy is lower than the adult, and that the adult is holding the chute's handles above his head. In all of the wide shots, specifically the ones from the side, we see that the boy and adult are level at head hight (boy is harnessed up higher) and that the adult now has the handles at his shoulders.
Continuity mistake: In the scene where the black guy borrowed the cellphone from Mr. Kirby, he had a shotgun on his back, but when he fell to the ground, he had a rifle.
Visible crew/equipment: Once inside the abandoned building on the island they proceed to walk down some steps after the candy machines. The upper body of a lurking crew member can be seen in a lit doorway in the background of the shot as the group descend the metal staircase. (00:39:39)
Continuity mistake: In the scene where all of the characters are flying over the dinosaur island, you can clearly see power lines and poles on one of the hills. The island ran all facilities off generators, and would not have this type of power transmission.
Continuity mistake: As the group runs into the aviary, they slam the metal doors shut, bolting them. The spinosaurus repeatedly bashes the doors from the other side. However, you can see through the small gap along the top of the doors that there is nothing that big behind them, not even a shadow is moving; there is only open space and daylight.
Continuity mistake: Tea Leoni's bruise on her cheek changes throughout the movie, once looking like a scratch, once looking like a bruise, etc.
Revealing mistake: In the final showdown with the Spinosaurus in the river it is night time. When the characters get plunged into the river and they have the underwater shots, there is so much light it must be daytime.
Revealing mistake: In the scene where the Spinosaurus is attacking the plane (specifically, the part where it's rolling the plane along the ground), there's a shot in which the plane rolls over the camera, and we see Grant through the window, screaming. At the very end of that shot, the plane rolls completely over and past the camera, and we can see the rest of the clearing behind it...and the Spinosaurus is nowhere to be seen.
Continuity mistake: After Dr. Alan Grant gets done talking with Ellie, he backs up in his car. As he pulls away, we can see that the interior dome/map light is blaring down on his hands that are on the steering wheel. After the instant angle change, however, the light is now turned off. It cannot be argued that the light turned off automatically during that split second angle change because when the doors of a car are already closed, and the car is started -- the light turns off instantly (if not already off) So this being the case, the light was manually turned in the first shot, and then it was off in the next. (00:06:35)
Continuity mistake: At the very end of the movie when the group is cornered by the Raptors, Tea Leoni gives them the eggs. When the first raptor picks up the first egg it is safe in its mouth, but in the next shot it is barely in its mouth, then in the final shot when the Raptor runs away, if you look closely at the Raptor's mouth the egg is well into the mouth.
Continuity mistake: In the diner, when Mr. Kirby is bribing Dr. Grant, after he says "We'd love to make a contribution to your research here" Dr. Grant lowers his glass to the table. In the following shot he does it again. (00:15:10)
Continuity mistake: The plane the group flies in is identified on the outside as a King Air 200. In the inside shots, the windows are from another type aircraft as the window shades are pull down types and in the King Air the windows are tinted by rotating a plexiglass cover to dim the light. Also, the engine sounds are from a piston aeroplane and this plane is definitely a turbo prop.