Class Actinopoda Calkins, 1902 see Parvkingdom Actinopoda Calkins, 1902
Count: 4o;45f;59g; †3o;87f;170g
   Subclass Radiolaria Müller, 1858 see Phylum Actinopoda Calkins, 1902
  Count: 4o;45f;59g; †3o;87f;170g
     Superorder Polycystina Ehrenberg, 1838 see Class Polycystinea Ehrenberg, 1838
    Count: [f†f] 4o;45f;59g; †3o;87f;170g
       Order †Archaeospicularia Dumitrica, Caridroit & De Wever, 2000
      Count: [†g] †3f;12g [12 Aug 2018]
         Superfamily †Secuicollactacea Nazarov & Ormiston, 1984 see Order Cancelliata Afanasieva & Amon, 2003
        Count: [†g] †2f;10g [12 Aug 2018]
           Family †Secuicollactidae Nazarov & Ormiston, 1984 see Subfamily Haplentactiniinae Nazarov, 1980
          Count: [†g] †4g [12 Aug 2018]
             Genus †Secuicollactaᵀ Nazarov & Ormiston, 1984
            Count: -