@book{fis_2006.269, title = {Révision Critique de la Paléontologie Française d' Alcide d'Orbigny. Volume IV: Céphalopodes Crétacés}, author = {Fischer, Jean-Claude and Gauthier, Henri }, year = {2006}, publisher = {(Backhuys) Leiden}, pages = {1–292}, url = {https://web.archive.org/https://www.euronet.nl/users/backhuys/Downloads/fireIV-vor.pdf} }