Ref. Levine, N.D., Corliss, J.O., Cox, F.E.G. et al. (1980) A new revised classification of the protozoa., J. Protozool., 27, 37-58.

Phylum Ciliophora

Class Kinetofragminophorea

Subclass Gymnostomatida

Order Prostomatida

Suborder Prostomatina

Family Holophryidae Holophrya
Family Metacystidae Metacystis, Vasicola

Suborder Prorodontina

Family Prorodontidae
Family Colepidae

Suborder Haptorina

Family Enchelyidae
Family Spathidiidae
Family Tracheliidae
Family Didiniidae

Order Pleurostomatida

Family Amphileptidae

Order Primociliatida
Order Karyorelictida

Subclass Vestibulifera

Order Trichostomatida

Suborder Trichostomatina

Order Colpodida

Subclass Hypostomatia

Superorder Nassulidea
Order Synhymeniida
Order Nassulida

Suborder Nassulina
Suborder Microthoracina

Superorder Phyllopharyngidea
Order Cyrtophorida

Suborder Chlamydodontina
Suborder Dysteriina

Class Oligohymenophorea

Subclass Hymenostomatia

Order Hymenostomatida

Suborder Tetrahymenina
Suborder Ophryoglenidae
Suborder Peniculina

Order Scuticociliatida

Suborder Philasterina
Suborder Pleuronematina

Class Polyhymenophorea

Subclass Spirotrichia

Order Heterotrichida

Suborder Heterotrichina
Suborder Armophorina

Order Odontostomatida
Order Oligotrichida

Suborder Oligotrichina
Suborder Tintinnina

Order Hypotrichida

Suborder Stichotrichina
Suborder Sporadotrichina