At the end of the movie there is a scene when the main character decides to fight off the T-Rex, he gets in a Bobcat, which is a very small front end loader. In between shots the Bobcat switches back and forth between a front end loader and a large boom operated fork lift.
In many scenes in this movie you can see that the location of the events changes, from one place to another totally different place. Even in the same scene the location may change between shots. This happens because the movie took most of its scenes from other movies.
In the beginning of the movie when the people get killed inside the Jeep, there is blood all over the interior, but later, when the police are investigating the scene, there is noticeably less blood on the inside of the windows.
When Jim and Barbara go to the coroner to identify the body of deputy Ben, Barbara pulls out a tooth which she claims is from the creature that attacked him. However the animal that attacked the deputy is supposed to be a Raptor, while the tooth she pulls out is from a Tyrannosaurus Rex.
In the opening scene, the Jeep has plastic windows. However, when the police investigate the Jeep clearly has glass windows.
When Barbara looks inside the jeep with the corpses of the guys killed at the beginning, you can see that the girl is moving, and the guy is breathing.
At the 27 min mark, a boom mic is clearly seen after Dr. Hyde finishes his conversation with his henchman. It takes up nearly half the screen.