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)
           1 Rhodomonas lens Pascher & Ruttner
           2 Rhodomonas minuta H.L. Skuja (1948)
           3 Rhodomonas ovalis