1912  Tornoceras dorsoplanum Sobolev, p.3, pl.5 fig.3, pl.6
           fig.3 non fig.4.
   ? 1914  Gomi-monomeroceras (Tornoceras) dorsoplanum.-Sobolev,
           p.59, pl.8 fig.21,22 textfig.97.
     1936a Tornoceras dorsoplanum.-Nalivkina, p.6, pl.1 fig.2.
     1959  Tornoceras (Protornoceras) planidorsatum.-Petter,
           p.202 (pt.), pl.15 fig.7, non fig.3-6.
     1962  Polonoceras planum.-Bogoslovskiy, pl.13, fig.6.
     1971  Polonoceras dorsoplanum.-Bogoslovskiy, p.64, pl.2
           fig.4-6.

Fig. see TAX5790 A, G (from Bogoslovskii, 1971, fig.11).