1927  Pericyclus sp. Librovich: 31.
     1941  Pericyclus aff. djyprakensis.-Delépine: 50, pl.3
           fig.7-8.
     1963  Pericyclus fasciculatus.-Zakowa, Jachowicz: pl.4
           fig.5.
     1964  Pericyclus sp..-Wagner-Gentis in Higgins et al.: 229,
           pl.1 fig.1-4.
     1968  Ammonellipsites sp. Popov, tab.1,2.