Goofs

At the beginning of the film, a hunter shoots at the pterodactyls 12 times with a shotgun that only holds eight shots.

A terrorist ambushes Coolio and shoots him, grazing him on the side of his head. But, the scene shows the man aiming the gun point blank at Coolio's stomach.

At the jeep, a terrorist tries to rape one of the students and is wrestling with her on the ground with his pants still zipped and up on his hips. When the pterodactyls attack, he detaches from the woman and his pants are around his ankles. A moment later, he is shooting at the monsters and his pants are pulled up, fully zipped and buttoned.

A pterodactyl attacks and carries off Jason, who flails with both arms as he disappears into the distance. Moments later, the others look for him and see his severed arm attached to his book.

Around 17:30, the paleontologist discusses about the "bird pee" they just found. Pterodactyls were flying reptiles, not birds.

The boulder Angie sits on moves when she sits on it.

The opening scene shows the pterodactyl eggs hatching, but it can easily be seen that there is a lot of empty space in the shell (hatchlings fill most of the volume of an egg when they emerge) and their skins are dry - animals freshly hatched are always damp from the remaining fluid inside the egg.

Angie's arm gets ripped off by the pterodactyl and you see bloody strands on the severed arm but in the next shot it's clean and neat as if it were cut instead of torn off.