Eukaryota Chatton, 1925 - eukaryotes see Domain Eukaryota Chatton, 1925
   [crown] Amorphea Adl et al. 2012, nom. cl. inval. see Clade Amorphea Adl et al. 2012 [Simpson, Medina & Adl 2020]
     Supergroup Amoebozoa Lühe, 1913 see Phylum Amoebozoa Lühe, 1913
       Tubulinea Smirnov et al., 2005 see Class Tubulinea Smirnov et al., 2005
         Arcellinida Kent, 1880 see Order Arcellinida Kent, 1880
           1 Genus Geamphorella Bonnet, 1959, incertae sedis
           2 Genus Oopyxis Jung, 1942, incertae sedis
           3 Genus Pseudawerintzewia Bonnet, 1959, incertae sedis
           4 Genus Pseudonebela Gauthier-Lièvre, 1953, incertae sedis
           5 Arcellina Haeckel, 1894 see Suborder Arcellinina Haeckel, 1884
           6 Difflugina Meisterfeld, 2002 see Suborder Difflugiina R. Meisterfeld, 2002
           7 Phryganellina Bovee, 1985 see Suborder Phryganellina Bovee, 1985
           8 Genus Nolandella Page, 1983 [monotypic]
           9 Echinamoebida Cavalier-Smith, 2004