English: Simple diagram depicting possible amouts of feathers in Therizinosauroid dinosaurs. A. Lack of feathers. While at least some Therizinosaurs (like Beipiaosaurus, see also [1] and [2]) had feathers, it is not impossible the largest genera (like [Therizinosaurus]) lacked them, and had scales. B. Thick coat with filamentous feathers, as it may looked at the living Beipiaosaurus C. As some genera may could have looked: body covered with scales, but with feathers on the tail, neck and forelimbs.