After being driven to extinction, great bloodthirsty dinosaurs come back to life with the assistance of a demented genetic scientist (Diane Ladd). She plans to replace the human race with a... After being driven to extinction, great bloodthirsty dinosaurs come back to life with the assistance of a demented genetic scientist (Diane Ladd). She plans to replace the human race with a super-race of dinosaurs who will not pollute the planet. This campy creature-fest delivers the B-movie goods with a sharp script, a series of effective special effects, and a manic performance by Ladd.