Therizinosaurus is a genus of very large theropod dinosaurs. Therizinosaurus comprises the single species T. cheloniformis, which lived in the late Cretaceous Period (late Campanian-early Maastrichtian stages, around 70 million years ago), and was one of the last and largest representatives of its unique group, the Therizinosauria
Microraptor - a small dinosaur about 20 inches long. The most unusual thing about this creature was its feathered hind limbs. The long and tapered feathers came from its thighbones and shinbones and made it look like it had four wings.