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)
               Family Cyathomonadaceae E.G. Pringsheim (1944) see Family Goniomonadaceae D.R.A. Hill, in Patterson & Larsen (1991)
                 Genus Cyathomonas Fromentel (1874)
                   Cyathomonas truncata (Fresenius, 1858) C. Fisch (1885) see Goniomonas truncata (G. Fresenius, 1858) F.R. von Stein (1878)