Unhatched Sauropod’s have been found with scaly skin impressions and the structures found on Kulindadromeus, Tianyulong and Pssitacosaurus are thought to have evolved independently (due to the difference in structure)

Sciurumimus is now known to be a coelurosaur, the group which contains every known feathered non-avian dinosaur. Current evidence states that only coelurosaurs could have feathers however there is evidence of non-coelurosaurians having integument, these however are believed to have evolved independently.