Dino Rex seemed like an interesting premise: a pre-Primal Rage fighter with dinosaurs. Unfortunately, the execution is lame as hell. The monochrome beasts are slow and awkward, and the sounds they make will have you reaching for a gun to blast the speakers to kingdom come.
There's a plot in this game, but it's hard to follow, riddled with Engrish and random bonus stages that take place in the present.
Between this and Violence Fight, there's good reason for Taito to stick to Space Invaders and stuff that ends in "Bobble".