Max C. Langer, Felipe C. Montefeltro, David W.E. Hone, Robin Whatley, Cesar L. Schultz. On Fodonyx spenceri and a new rhynchosaur from the Middle Triassic of Devon. „Journal of Vertebrate Paleontology”. 30 (6), s. 1884–1888, 2010. DOI: 10.1080/02724634.2010.521901. (ang.).