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 Vannellidae Bovee, 1970
         Genus Pessonella M. Pussard, 1973, nom. inq.
           1 Pessonella marginata Pussard, 1973