^Jaime A. Headden and Hebert B.N. Campos. An unusual edentulous pterosaur from the Early Cretaceous Romualdo Formation of Brazil. Historical Biology: An International Journal of Paleobiology. 2014,. in press: 1–12. doi:10.1080/08912963.2014.904302.
^ 3.03.1Kellner, A.W.A., 2003. Pterosaur phylogeny and comments on the evolutionary history of the AN group. In: Buffetaut, E., Mazin, J.M. (Eds.), Evolution and Palaeobiology of Pterosaurs. Geological Society, London, Special Publication 217, 105–137.
^Unwin, D. M., (2003). "On the phylogeny and evolutionary history of pterosaurs." Pp. 139-190. in Buffetaut, E. & Mazin, J.-M., (eds.) (2003). Evolution and Palaeobiology of Pterosaurs. Geological Society of London, Special Publications 217, London, 1-347.
^Andres, B., Ji, Q., 2008. A new pterosaur from the Liaoning Province of China, the phylogeny of the Pterodactyloidea, and convergence in their cervical vertebrae. Palaeontology 51, 453–469.