Class Cryptophyceae Pascher ex Schoenichen (1925) see Class Cryptophyceae F.E. Fritsch (1927)
   Order Cryptomonadales Pascher (1913)
     Family Cryptomonadaceae Ehrenb. (1831)
       1 Genus Chilomonas Ehrenb. (1831)
       2 Genus Chroomonas A. Hansgirg (1885)
       3 Genus Cryptomonas Ehrenb. (1831)
       4 Genus Plagioselmis R.W. Butcher (1967)
       5 Genus Proteomonas D.R.A. Hill & R. Wetherbee (1986)