“Cowboys vs. Dinosaurs” (** out of four) was a synthetic action adventure thriller about an explosion at a local mine in Montana which unearths pre-existing dinosaurs who start to maul the town and it’s up to a local cowboy (Rib Hillis) and others (Eric Roberts, Casey Fitzgerald, Vernon Wells) to take action and put a stop to them and send them back to the pre-historic age. One more K-Mart derivation of “Jurassic Park” which are starting to get worn out by now but it moves relatively quick and does feature a few good kills and action scenes. Hillis is rock-solid in the lead role; Roberts is wasted in another easy paycheck role.