Phylum Actinopoda Calkins, 1902
Count: -
   Class Polycystina Ehrenberg, 1838 see Class Polycystinea Ehrenberg, 1838
  Count: -
     Order Nassellarida see Order Nassellaria Ehrenberg, 1875
    Count: [*] 17f
       01 Family Androspyridae
      Count: -
       02 Family Cannobotryidae Haeckel, 1881
      Count: -
       03 Family Coronidae
      Count: -
       04 Family Dicyrtoidae
      Count: -
       05 Family Lithobotryidae
      Count: -
       06 Family Monocyrtoidae
      Count: -
       07 Family Nassellidae
      Count: -
       08 Family Phormospvridae see Family Phormospyridae
      Count: -
       09 Family Plagonidae see Family Plagoniidae Haeckel, 1881
      Count: -
       10 Family Pylobotryidae
      Count: -
       11 Family Semantidae
      Count: -
       12 Family Stephanidae Leach, 1815 see Family Stephaniidae Haeckel, 1887
      Count: -
       13 Family Stichocyrtoidae
      Count: -
       14 Family Tholospvridae see Family Tholospyridae
      Count: -
       15 Family Tricyrtoidae
      Count: -
       16 Family Tympanidae
      Count: -
       17 Family Zygospyridae
      Count: -