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]
Family Stygamoebidae Smirnov & Cavalier-Smith, 2011
1 Genus Stygamoebaᵀ Sawyer, 1975
2 Genus Vermistella Moran, Anderson, Dennett, Caron & Gast, 2007