Phylum Actinopoda Calkins, 1902
Count: -
   Class Polycystina Ehrenberg, 1838 see Class Polycystinea Ehrenberg, 1838
  Count: -
     Order Spumellarida see Order Spumellaria Ehrenberg, 1875
    Count: [*] 38f
       Suborder Sphaerocollina
      Count: [*] 7f
         Family Orosphaeridae Haeckel, 1887
        Count: -