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 Discorboida Ehrenberg, 1838
           Order Discorbida Ehrenberg, 1838
             Superfamily Discorbinoidea Ehrenberg, 1838 see Superfamily Discorboidea Ehrenberg, 1838
               Family Discorbidae Ehrenberg, 1838
                 Genus Acarotrochus Kawagata, 2005