1978  Cancelloceras contractum Ruzhentsev & Bogoslovskaya:
           292, pl.39 fig.3-6, pl.40 fig.1,2.
cf.  1985  Cancelloceras cf. contractum.-Kullmann & Delvolvé: 62,
           pl.2 fig.11,12 [see Taxno 2772 Cancelloceras sp.].
     1995  Cancelloceras (Cancelloceras) contractum.-Nikolaeva &
           Kullmann:369.