Rocco, Lucia, Costagliola, Domenico, Morescalchi, Maria Alessandra and Stingo, Vincenzo(2004) A olecular approach to systematics of Polypteriformes among Osteichthyes, Italian Journal of Zoology, 71: 4, 347 — 351 doi:10.1080/11250000409356594
itis.gov
Integrated Taxonomic Information System: Chondrostei
mnhn.fr
Richard Lund (2000): The new Actinopterygian order Guildayichthyiformes from the Lower Carboniferous of Montana (USA). Geodiversitas 22 (2) :171-206. PDFArkiverad 1 november 2013 hämtat från the Wayback Machine.
umich.edu
animaldiversity.ummz.umich.edu
Myers, P., R. Espinosa, C. S. Parr, T. Jones, G. S. Hammond & T. A. Dewey. 2008: The Animal Diversity Web: Order Polypteriformes
web.archive.org
Richard Lund (2000): The new Actinopterygian order Guildayichthyiformes from the Lower Carboniferous of Montana (USA). Geodiversitas 22 (2) :171-206. PDFArkiverad 1 november 2013 hämtat från the Wayback Machine.