Kingdom Protoctista Hogg, 1860
   Phylum Cryptophyta Caval.-Sm. (1986) - cryptomonads see Superclass Cryptomonada Cavalier-Smith, 2004
     Class Cryptophyceae F.E. Fritsch (1927)
       Order Cryptomonadales Pascher (1913)
         Genus Rhodomonas Karsten (1898)
           Rhodomonas minuta H.L. Skuja (1948)
             1 Rhodomonas minuta var. nanoplanctica H.L. Skuja (1948)