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)
         01 Genus Chilomonas Ehrenb. (1831)
         02 Genus Cryptomonas Ehrenb. (1831)
         03 Genus Chroomonas A. Hansgirg (1885)
         04 Genus Pyrenomonas U.J. Santore (1984) see Genus Rhodomonas Karsten (1898)
         05 Genus Rhodomonas Karsten (1898)
         06 Genus Cyanomonas F. Oltmanns (1904)
         07 Family Hemiselmidaceae Butcher (1967)
         08 Genus Proteomonas D.R.A. Hill & R. Wetherbee (1986)
         09 Genus Cyathomonas Fromentel (1874)
         10 Genus Phaeoplax
         11 Genus Phaeococcus A. Borzì (1892)