Domain Eucaryota
   Subdomain Amoebota Doweld (2001)
     Kingdom Amoebobiota Doweld, 2001
       Subkingdom Amoebobiotina Dillon, 1963
         Phylum Arcellozoa Doweld, 2001 [monotypic]
           Class Arcellatea Doweld, 2001
             Subclass Arcellatinea Doweld, 2001
               Order Arcellinida Kent, 1880 - shelled lobosid amebas
                 Family Arcellidae Ehrenberg, 1843
                   1 Genus Arcella Ehrenberg, 1830