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 Euglenophycota see Phylum Euglenophyta Pascher (1931)
           Class Euglenophyceae W. Schoenichen (1925) see Class Euglenoidea Bütschli, 1884
             Order Euglenales Bütschli (1884) see Suborder Euglenina Bütschli, 1884
               Genus Astasia Dujardin, 1830
               Genus Colacium Ehrenberg, [1834]
               Genus Euglena C.G. Ehrenberg, 1830
               Genus Khawkinea Jahn & McKibben, 1937
               Genus Phacus Dujardin, 1841
               Genus Trachelomonas Ehrenberg, 1833