What is this movie called?

I really don't know much about it, and i don't even know if what i think i know is right. But i remember seeing a movie when i was little. My older brothers and sisters were watching it and i happened to be around. I just remember that it scared the crap out of me. It is in like the desert or something. There is a problem with like these monsters killing people. I think they were like coming out of the ground or something and hurting people. for some reason i think they looked like rhino's or dinosaurs. I really have no clue, i'm just really curious about that movie. If you have any suggestion at all, i would love to hear it.