Natura - nature
   actualia - actual entities
     Mundus Plinius - physical world
       naturalia - natural bodies
         Biota
           "neomura"
             Domain Eukaryota Chatton, 1925 - eukaryotes
               neokaryotes Cavalier-Smith 1993 - mitochondrial eukaryotes
                 neozoa Cavalier-Smith 1993
                   Superkingdom Corticata Lankester, 1878
                     Kingdom Chromista Caval.-Sm. (1981) - chromists
                       Subkingdom Hacrobia Okamoto, Chantangsi, Horák, Leander & Keeling (2009)
                         Phylum Cryptista Cavalier-Smith, 1986
                           [Class Cryptomonadea Stein, 1878] see Superclass Cryptomonada Cavalier-Smith, 2004
                             [Order Cryptomonadida Senn, 1900 - cryptomonads] see Order Cryptomonadales Pascher (1913)
                               1 [Family Cryptomonadidaeᵀ Ehrenberg, 1831] see Family Cryptomonadaceae Ehrenb. (1831)
                               2 [Family Hemiselmidae] see Family Hemiselmidaceae Butcher (1967)