Natura - nature
   actualia - actual entities
     Mundus Plinius - physical world
       naturalia - natural bodies
         Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
           Clade neomura Cavalier-Smith, 1987
             Domain Eukaryota Chatton, 1925 - eukaryotes
               Clade discaria Cavalier-Smith, 2021
                 Clade natates Cavalier-Smith, 2021
                   Clade photaria Cavalier-Smith, 2021
                     Clade Discoba Simpson 2009
                       Superphylum Discicristata Cavalier-Smith, 1998 [coordinate rank]
                         Phylum Euglenozoa Cavalier-Smith, 1981
                           Class Euglenoidea Bütschli, 1884
                             Order Petalomonadida Cavalier-Smith, 1993
                               Genus Petalomonasᵀ F. Stein, 1859
                                 Petalomonas abscissa (F. Dujardin, 1841) F. Stein, 1859
                                 Petalomonas alata (A.C. Stokes, 1886) A.C. Stokes, 1888
                                 Petalomonas asymmetrica
                                 Petalomonas bicarinata
                                 Petalomonas boadicea Larsen & Patterson, 1990
                                 Petalomonas calycimonoides Lee & Patterson, 2000
                                 Petalomonas cantuscygni J.P. Cann & N.C. Pennick, 1986
                                 Petalomonas christeni Lee & Patterson, 2000
                                 Petalomonas intortus Lee & Patterson, 2000
                                 Petalomonas iugosus Lee & Patterson, 2000
                                 Petalomonas labrum Lee & Patterson, 2000
                                 Petalomonas marginalis J. Larsen & D.J. Patterson, 1990
                                 Petalomonas mediocanellata F. Stein, 1878
                                 Petalomonas minor Larsen & Patterson, 1990
                                 Petalomonas minuta A.C. Hollande, 1942
                                 Petalomonas physaloides Lee & Patterson, 2000
                                 Petalomonas planus W.J. Lee & Patterson, 2000
                                 Petalomonas platyrhyncha
                                 Petalomonas poosilla Larsen & Patterson, 1990
                                 Petalomonas quinquecarinata Lee & Patterson, 2000
                                 Petalomonas raiula Larsen & Patterson, 1990
                                 Petalomonas spinifera Lee & Patterson, 2000
                                 Petalomonas tricarinata H.L. Skuja, 1939
                                 Petalomonas virgatus Lee & Patterson, 2000