Rhizopoda Dujardin, 1835 - rhizopods see Phylum Cercozoa Cavalier-Smith, 1998
   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
           Genus Sappinia Dangeard, 1896 [monotypic]
             13 Sappinia diploidea (Hartmann & Naegler, 1908) Alexeieff, 1912