Template:Nikolaeva & Kullmann, 1995
- Nikolaeva S.V. & Kullmann J., 1995. The Late Namurian genus Cancelloceras (Carboniferous Ammonoidea) and its distribution. Paläontologische Zeitschrift 69: 353-376, 8 figs., 1 table, Stuttgart, DOI: 10.1007/BF02987800.