organisms see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
Count: -
   Domain eukaryotes see Domain Eukaryota Chatton, 1925
  Count: 1k;12p;37c;157o;717f;2996g;586s; †2o;1g
     amoeboid protists
    Count: 2p;7c;40o;264f;1038g;3s; †2o
       Order Arcellinida Kent, 1880 - shelled lobosid amebas
      Count: -
         Suborder Difflugina R. Meisterfeld, 2000[2002] see Suborder Difflugiina R. Meisterfeld, 2002
        Count: [g] 11f;52g
           Family Heleoperidae Jung, 1942
          Count: -
             Genus Heleopera Leidy, 1879
            Count: -