“Jurassic Thunder” (*1/2 out of four) was a slapdash sci/fi thriller about a group of redneck commandos (Heath C. Heine, Rick Haak, Jon Cotton, and more) who have to join forces with a group of weaponized dinosaurs to secure a covert desert base. Yet another umpteenth rip-off of “Jurassic Park” (as if you couldn’t guess from the title) with tacky dinosaurs and crummy visual effects but it’s also needlessly dumb. Amusing opening goes nowhere. Michael Crichton is likely turning in his grave right now.