Planet of the Dinosaurs??
Back when Jurassic Park came out, my cousin and I were waking through a video store and found an older dinosaur movie that had been repackaged with the tag line: "this is no park." The movie was about a group of astronauts that crash land on a planet filled with dinosaurs. Many of these astronauts are killed off on by one. The no-brainier answer is that the film is Planet of the Dinosaurs, but I am not sure because I can't find any images or evidence of that film, or any other film, being connected with the "no park" tag line that attempted to cash in on the success of Jurassic Park.