Phylum Amoebozoa Lühe, 1913
   Subphylum Protamoebae Cavalier-Smith, 2004 see Subphylum Lobosa Carpenter, 1861
     Class Variosea Cavalier-Smith, 2004
       Order Centramoebida Rogerson & Patterson, 2002
         Family Acanthamoebidae Sawyer & Griffin, 1975
           Genus Acanthamoeba Volkonsky, 1931
             Acanthamoeba castellani (Douglas, 1930) Volkonski, 1931 see Acanthamoeba castellanii (Douglas, 1930)