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 dorsates Cavalier-Smith, 2021
                   Clade podiates Cavalier-Smith, 2012
                     [crown] Clade Amorphea Adl et al. 2012 [Simpson, Medina & Adl 2020]
                       Phylum Amoebozoa Lühe, 1913 [coordinate rank]
                         Subphylum Tevosa Kang, Tice, Spiegel, Silberman, Pánek, Čepička, Kostka, Kosakyan, Alcântara, Roger, Shadwick, Smirnov, Kudryavtsev, Lahr & Brown, 2017
                           Infraphylum Lobosa Carpenter, 1861 [monotypic]
                             Class Tubulinea Smirnov et al., 2005
                               Order Arcellinida Kent, 1880 - shelled lobosid amebas
                                 Suborder Difflugiina R. Meisterfeld, 2002
                                   Family Trigonopyxidae Loeblich & Tappan, 1964
                                     1 Genus Cornuapyxis Coûteaux & Chardez, 1981
                                     2 Genus Cyclopyxis Deflandre, 1929
                                     3 Genus Ellipsopyxella Bonnet, 1975
                                     4 Genus Ellipsopyxis Bonnet, 1965
                                     5 Genus Geopyxella Bonnet & Thomas, 1955
                                     6 Genus Trigonopyxisᵀ Penard, 1912