1974  Helicocyclus sp. Kuzina, pl.14 fig.4-6.
     1977  Helicocyclus involutus Kuzina in Shimanskiy & Kuzina,
           p.8, pl.2 fig.4-6.
     1980  Helicocyclus involutus.-Kuzina: 66, pl.5 fig.4-6,
           text-fig.19a.

Fig. see TAX266 A (suture).