1. Adams, H., Adams, A., 1856. The genera of recent Mollusca (b) v. 2 (1854–58), 661 p., v. 3 (1858). London, pl 136.
2. Nomenclatoris zoologici index universalis continens nomina systematica classium, ordinum, jamiliarum et generum animalium omnium tam viventium quom fassilium, etc;Agassiz,1842
3. Lower Cretaceous deposits in California and Oregon;Anderson;Geological Society of America, Special Paper,1938
4. A classification of the Jurassic ammonites;Arkell;Journal of Paleontology,1950
5. Lower Cretaceous (Valanginian-Early Aptian) ammonite succession in the Svinita region (SW Rumania);Avram;Géologie Alpine, Mémoires, hors-série,1994