Domain Eucaryota
   Subdomain Chlorota Doweld (2001)
     Kingdom Peridiniobiota Starobogatov ex Doweld (2001)
       Subkingdom Parameciobiotina Starobogatov, 1986 [monotypic]
         Phylum Parameciozoa Kussakin & Drozdov, 1998
           Subphylum Parameciozoina Doweld, 2001
             1 Class Podophryatea Doweld, 2001
             2 Class Nassulatea Doweld, 2001
             3 Class Colpodatea Small & Lynn, 1981
             4 Class Prorodontatea Doweld, 2001
             5 Class Plagiopylatea Small & Lynn, 1985
             6 Class Parameciatea Doweld, 2001