Supergroup Rhizaria Cavalier-Smith, 2002 see Infrakingdom Rhizaria Cavalier-Smith, 2002
   Phylum Foraminifera d'Orbigny, 1826 see Subphylum Foraminifera d'Orbigny, 1826
     Class Spirillinata Mikhalevich, 1992
       Subclass Ammodiscana Mikhalevich, 1980
         ?Order Ataxophragmiida Fursenko, 1958
           Superfamily Textularielloidea Groenhagen & Luterbacher, 1966
             Family Pfenderinidae Smout & Sugden, 1962
               1 Subfamily Pfenderininae Smout & Sugden, 1962
               2 Subfamily Pseudopfenderininae Septfontaine, 1988
               3 Subfamily Paleopfenderininae Septfontaine, 1988
               4 Subfamily Kurnubiinae Redmond, 1964