Supergroup Rhizaria Cavalier-Smith, 2002 see Infrakingdom Rhizaria Cavalier-Smith, 2002
   Phylum Foraminifera d'Orbigny, 1826 see Subphylum Foraminifera d'Orbigny, 1826
     Class Rotaliata Mikhalevich, 1980 - hyaline foraminifers
       Subclass Rotaliana Mikhalevich, 1980
         Superorder Buliminoida Saidova, 1981
           Order Cassidulinida d'Orbigny, 1839
             Family Orthoplectidae Loeblich & Tappan, 1984
               1 Genus Elongobula Finlay, 1939