Kingdom [Animalia] Linnaeus, 1758 - animals
   Subkingdom Protozoa Goldfuss, 1818 see Kingdom Protozoa Goldfuss, 1818
     Class Ciliata see [unranked] ciliates
       Order Holotricha
         Suborder Hymenostomata
           1 Genus Paramaecium Müller, 1773 see Genus Paramecium Müller, 1773
           2 Genus [Colpidium] Stein, 1860
           3 Genus [Ichthyophthirius] Fouquet, 1876