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 Eutreptiales Leedale (1967) see Suborder Eutreptiina Leedale, 1967
               Genus Eutreptia Perty, 1852
                 Eutreptia pertyi