Phylum Ciliophora Doflein, 1901 - ciliates
   Subphylum Intramacronucleata Lynn, 1996 - amphiesmates
     Class Spirotrichea Bütschli, 1889
       Subclass Choreotrichia Small & Lynn, 1985
         Order Choreotrichida Small & Lynn, 1985
           1 Suborder Leegaardiellina Laval-Peuto et al., 1994
           2 Suborder Lohmanniellina Laval-Peuto et al., 1994
           3 Suborder Strobilidiina Small & Lynn, 1985
           4 Suborder Strombidinopsina Small & Lynn, 1985