It is an odd combination of anime and kaiju. Giant, invulnerable, live-action dinosaurs dig out of their subterranean caverns to wipe the Earth clean of the animated human vermin. The only thing that can stop them is the hermaphrodite, Gemini!
There's plenty of models blowing up, dinosaurs MOO-HOO-HA'ing, and some surprisingly gory violence.
If you can find this, rent or buy at once! You won't be disappointed.