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 Balamuthiidae Cavalier-Smith, 2004 1 Genus Balamuthia Visvesvara et al., 1993