 Turner, Makovicky and Norell (2012) included "Epidexipteryx" but not "Scansoriopteryx"/"Epidendrosaurus" in their primary phylogenetic analysis, as a full-grown specimen is known only of the former taxon; regarding "Scansoriopteryx"/"Epidendrosaurus", the authors were worried that including it in the primary analysis would be problematic, because it is only known from juvenile specimens, which "do not necessarily preserve all the adult morphology needed to accurately place a taxon phylogenetically" (Turner, Makovicky and Norell 2012, p. 89).