Continuity mistake: When Nigel is in the swamp in a dingy looking for a Deinosuchus, watch Nigel's sandals. Every time the camera faces a different angle, his sandals are either on (absent in the previous scene) or disappear (if previously on his feet).
Factual error: When Nigel is in the gyrocopter thing and is over the sea/ocean, you can see off into the distance an island with what appears to be houses, but it is supposed to be prehistoric times.
