Kingdom Protoctista Hogg, 1860
Phylum Rhizopoda Dujardin, 1835 - rhizopods
see Phylum Cercozoa Cavalier-Smith, 1998
Class Lobosea (Carpenter, 1861) Cavalier-Smith, 1993
see Subphylum Lobosa Carpenter, 1861
Subclass Testacealobosa
see Subclass Testacealobosia de Saedeleer, 1934
Order Arcellinidae
see Order Arcellinida Kent, 1880
1 Family Arcellidae Ehrenberg, 1843
2 Family Centropyxidae Jung, 1942
3 Family Difflugiidae Wallich, 1864