Brodkorb, Pierce (1963): Catalogue of fossil birds. Part 1 (Archaeopterygiformes through Ardeiformes). Bulletin of the Florida State Museum, Biological Sciences7(4): 179-293. PDF fulltextArchivado el 11 de marzo de 2007 en Wayback Machine.
Brodkorb, Pierce (1963): Catalogue of fossil birds. Part 1 (Archaeopterygiformes through Ardeiformes). Bulletin of the Florida State Museum, Biological Sciences7(4): 179-293. PDF fulltextArchivado el 11 de marzo de 2007 en Wayback Machine.
Weishampel, D.B.; Grigorescu, D. & Norman, D.B. (1991): The dinosaurs of Transylvania. National Geographic Research and Exploration7(2): 196-215. PDF completo