Phylum Amoebozoa Lühe, 1913 Subphylum Lobosa Carpenter, 1861 see Infraphylum Lobosa Carpenter, 1861 Class Discosea Cavalier-Smith, 2004 Subclass Flabellinia Smirnov et al., 2005 Order Stygamoebida Smirnov & Cavalier-Smith, 2011 [monotypic] 1 Family Stygamoebidae Smirnov & Cavalier-Smith, 2011