organisms see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Kingdom Protoctista Hogg, 1860
     Phylum Cryptophyta Caval.-Sm. (1986) - cryptomonads see Superclass Cryptomonada Cavalier-Smith, 2004
       Genus Cyathomonas Fromentel (1874)
         Cyathomonas truncata (Fresenius, 1858) C. Fisch (1885) see Goniomonas truncata (G. Fresenius, 1858) F.R. von Stein (1878)