living organisms see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Superkingdom Eukaryotae see Domain Eukaryota Chatton, 1925
     Kingdom Plantae Haeckel (1866) - plants
       Subkingdom Thallobionta
         Division Chromophycota see Phylum Chromophyta T.A.Chr. (1962), nom. nud.
           Class Cryptophyceae F.E. Fritsch (1927)
             Order Cryptomonadales Pascher (1913)
               1 Family Hilleaceae Pascher (1967)
               2 Family Hemiselmidaceae Butcher (1967)
               3 Family Cryptomonadaceae Ehrenb. (1831)
               4 Family Cyathomonadaceae E.G. Pringsheim (1944) see Family Goniomonadaceae D.R.A. Hill, in Patterson & Larsen (1991)
               5 Family Kathablepharidaceae Skuja (1939), orth. inval. see Family Katablepharidaceae Skuja (1939)
               6 ?Family Pleuromastigaceae
               7 ?Family Butschliellaceae