Domain Eucaryota
   Subdomain Amoebota Doweld (2001)
     Kingdom Hydrobiota Doweld, 2001
       Subkingdom Ctenoplanobiotina Doweld, 2001 [monotypic]
         Phylum Ctenoplanozoa Doweld, 2001
           1 Class Ctenoplanatea Doweld, 2001
           2 Class Beroatea Doweld, 2001