This movie seems to suffer from a low budget. The writing is okay. The plotting was okay. The actors are okay. The special effects are weak. All could have been better. This movie could be compared to Anaconda, but replace the snake with a killer crocodile. Swap out South America and see Africa instead. Unlike Anaconda, Primeval makes a social statement about the political unrest in Africa. In the back drop of filming a crocodile documentary, political unrest and murder is happening all around them. Where this movie suffers is the pacing. It starts out slow and isn't even interesting until the crocodile appears. Once the crocodile appears, that's really all you may care to see. Unfortunately, the special effects are too obvious and the crocodile acts fake and looks fake. It's only at this point that the movie even gets up to the quality of Anaconda which also had fake looking effects.
Orlando Jones as Steven Johnson brings a welcome light touch of humor to an otherwise serious movie. Brooke Langton as Aviva Masters brings a welcome touch of beauty to a dirty and unattractive African setting. The other characters aren't quite as appealing.
This movie is worth seeing, but just barely. Wait for the DVD.