Natura - nature
   actualia - actual entities
     Mundus Plinius - physical world
       naturalia - natural bodies
         [crown] 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 Percolozoa Cavalier-Smith, 1992
                           Subphylum Tetramitiaᵀ Cavalier-Smith, 1993
                             Infraphylum Eutetramitia Hanousková, Táborský & Čepička, 2018
                               Class Lyromonadea Cavalier-Smith, 1993
                                 Order Lyromonadidaᵀ Cavalier-Smith, 1993 - lyromonads
                                   Family Psalteriomonadidae Cavalier-Smith, 1993 [monotypic]
                                     1 Genus Psalteriomonasᵀ Broers, Stumm, Vogels & Brugerolle, 1990
                                     2 Genus Sawyeria O'Kelly et al., 2003
                                     3 Genus Harpagon Pánek, Silberman, Yubuki, Leander & Cepicka, 2012