1991  Prothalassoceras notabile Bogoslovskaia, Leonova &    
           Shkolin: 54, pl.2,fig.8, text-fig.4 (nom.nud.)
     1995  Prothalassoceras notabile Bogoslovskaia, Leonova &
           Shkolin: 298, fig.5.14, 5.15, 10.3.

Holotype: PIN no.4441/165.

Fig. see TAX5217 C (suture).