Class Lobosea (Carpenter, 1861) Cavalier-Smith, 1993 see Subphylum Lobosa Carpenter, 1861
   Subclass Gymnamoebia (Haeckel, 1862) Cavalier-Smith, 1993 see [unranked] Gymnamoebae
     Order Euamoebida Lepşi, 1960
       Family Thecamoebidae Schaeffer, 1926
         1 Genus Thecamoeba Fromentel, 1874
         2 Genus Sappinia Dangeard, 1896
         3 Genus Dermamoeba Page & Blakey, 1979
         4 Genus Paradermamoeba Smirnov & Goodkov, 1993
         5 Genus Pseudothecamoeba Page, 1988
         6 Genus Parvamoeba Rogerson, 1993
         7 Genus Thecochaos Page, 1981