This diagram makes it look as though Silesaurus is an ornithischian and Guaibasaurus is a theropod, when the results actually place them in ambiguous polytomies (as the text makes clear). Based on this study, Silesaurus could just as easily be a saurischian or a non-dinosaur, and Guaibasaurus could just as easily be a sauropodomorph (even more basal than Panphagia!) or a non-eusaurischian. If the nodes for "Ornithischia" and "Theropoda" had been shifted to the right a bit, this would have been clearer.