Kingdom Protista (Haeckel, 1866) - protists
   Order Foraminifera d'Orbigny, 1826 see Class Foraminifera d'Orbigny, 1826
     Suborder "rotalids" see Order Rotaliida Lankester, 1885
       Superfamily †Orbitoidacea Schwager, 1876 see Order Orbitoidida Copeland, 1956
         1 Family †Pseudorbitoididae Rutten, 1935
         2 Family †Orbitoididae Schwager, 1876
         3 Family †Discocyclinidae Galloway, 1928
         4 Family †Lepidocyclinidae Scheffen, 1932