Revised April 24, 2002
If you are searching for a Family or Genus, please press CTRL-F.
For taxa down to the CLASS LEVEL, the names link to taxonomic
descriptions of the included taxa down to the level of FAMILY.
Classification of the Phylum Ciliophora, down to genus, revised by Denis Lynn (unpubl.)
Phylum CILIOPHORA Doflein, 1901
Subphylum POSTCILIODESMATOPHORA Gerassimova & Seravin, 1976
Class KARYORELICTEA Corliss, 1974
Order Protostomatida Small & Lynn, 1985
Kentrophoridae Jankowski, 1980
- Kentrophoros Sauerbrey, 1928
- Prototrachelocerca Foissner, 1996
- Trachelolophos Foissner & Dragesco, 1996
- Trachelonema Dragesco, 1958 [valid name?]
- Tracheloraphis Dragesco, 1958 [1960?]
Trachelocercidae Kent, 1881
- Trachelocerca Ehrenberg, 1833 [1840?]
Order Loxodida Jankowski, 1980
Cryptopharyngidae Jankowski, 1980
- Apocryptopharynx Foissner, 1996
- Cryptopharynx Kahl, 1928
Loxodidae Bütschli, 1889
- Loxodes Ehrenberg, 1833 [1830]
- Remanella Kahl, 1933 [(Kahl, 1933) Foissner, 1996?]
Order Protoheterotrichida Nouzarède, 1977
Geleiidae Kahl, 1933
- Avelia Nouzarède, 1977
- Geleia Kahl, 1933 [(Kahl, 1933) Foissner, 1998]
- Gellertia Dragesco, 1999Incertae sedis in Class KARYORELICTEA
- Ciliofaurea Dragesco, 1960
- Corlissia Dragesco, 1960 [1954]
Class HETEROTRICHEA Stein, 1859
Order Heterotrichida Stein, 1859
Blepharismidae Jankowski in Small & Lynn, 1985
- Anigsteinia Isquith, 1968
- Blepharisma Perty, 1849
- Parablepharisma Kahl, 1932 [nomen nudum]
- Pseudoblepharisma Kahl, 1926 [1927]
Chattonidiidae Villeneuve-Brachon, 1940
- Chattonidium Villeneuve, 1937
Climacostomidae Repak, 1972
- Climacostomum Stein, 1859
- Copemetopus Villeneuve-Brachon, 1940
- Fabrea Henneguy, 1890
Condylostomatidae Kahl in Doflein & Reichenow, 1929
- Condylostoma Bory de St. Vincent, 1826 [1824]
- Condylostomides Da Silva Neto, 1994
- Linostoma Jankowski, 1978 [Linostomella Aescht in Foissner, Berger & Schaumberg, 1999]Incertae sedis in Family Condylostomatidae
- Dellochus Corliss, 1960
Folliculinidae Dons, 1914
- Ampullofolliculina Hadzi, 1951
- Ascobius Henneguy, 1884
- Atriofolliculina Hadzi, 1951 [nomen nudum]
- Aulofolliculina Hadzi, 1951
- Botticula Dioni, 1972
- Claustrofolliculina Hadzi, 1951
- Diafolliculina Hadzi, 1951 [nomen nudum]
- Donsia Hadzi, 1951 [obj. syn. for Plicophrya]
- Echinofolliculina Dons, 1934
- Epifolliculina Hadzi, 1951
- Eufolliculina Hadzi, 1951
- Folliculina Lamarck, 1816
- Folliculinopsis Fauré-Fremiet, 1936 [nomen nudum]
- Halofolliculina Hadzi, 1951 [nomen nudum]
- Lagotia Wright, 1858 [1857]
- Latifolliculina Hadzi, 1951
- Magnifolliculina Uhlig, 1964 [nomen nudum]
- Metafolliculina Dons, 1925 [1924]
- Mirofolliculina Dons, 1927 [1928]
- Pachyfolliculina Hadzi, 1951
- Parafolliculina Dons, 1914
- Pebrilla Giard, 1888
- Pedifolliculina Hadzi, 1951 [obj. syn. Pseudofolliculina]
- Perifolliculina Hadzi, 1951
- Planifolliculina Hadzi, 1951
- Platyfolliculina Hadzi, 1938
- Priscofolliculina Deflandre & Deunff, 1957
- Pseudofolliculina Dons, 1914
- Pseudoparafolliculina Andrews & Nelson, 1942 [?]
- Splitofolliculina Hadzi, 1951 [nomen nudum]
- Stentofolliculina Hadzi, 1938
- Tapetofolliculina Andrews & Nelson in Hadzi, 1951 [obj. syn. of Pseudoparafolliculina]
- Valletofolliculina Andrews, 1953
Peritromidae Stein, 1867
- Peritromus Stein, 1862 [1863]
Spirostomidae Stein, 1867
- Gruberia Kahl, 1932
- Spirostomum Ehrenberg, 1833 [1834]Incertae sedis in Family Spirostomidae
- Diplogmus Mansfeld, 1923
- Propygocirrus Mansfeld, 1923
Stentoridae Carus, 1863
- Stentor Oken, 1815
Incertae sedis in Family Stentoridae
- Parastentor Vuxanovici, 1961
- Stentoropsis Dogiel & Bychowsky, 1934Incertae sedis in Suborder Heterotrichina
- Pediostomum Kahl, 1932
Subphylum INTRAMACRONUCLEATA Lynn, 1996
Class SPIROTRICHEA Bütschli, 1889
Subclass Protocruziidia de Puytorac, Grain & Mignot, 1987
Order Protocruziida Jankowski in Small & Lynn, 1985
Protocruziidae Jankowski in Small & Lynn, 1985
- Protocruzia de Faria, da Cunha & Pinto, 1922
Subclass Phacodiniidia Small & Lynn, 1985
Order Phacodiniida Small & Lynn, 1985
Phacodiniidae Corliss, 1979
- Phacodinium Prowazek, 1900
Subclass Licnophoridia Corliss, 1957
Order Licnophorida Corliss, 1957
Licnophoridae Bütschli, 1887
- Licnophora Claparède, 1867
Subclass Hypotrichia Stein, 1859
Order Kiitrichida Nozawa, 1941
Kiitrichidae Nozawa, 1941
- Caryotricha Kahl, 1932
- Kiitricha Nozawa, 1941Incertae sedis in Order Kiitrichida
Reichenowellidae Kahl, 1932
- Reichenowella Kahl, 1932
Transitellidae Fryd-Versavel & Tuffrau, 1978
- Balantidioides Kahl, 1930 [Penard in Kahl, 1930]
- Transitella Gellért, 1950 [syn. of Balantidioides]
Order Euplotida Small & Lynn, 1985
Suborder Discocephalina Wicklow, 1982
Discocephalidae Jankowski, 1979
- Discocephalus Ehrenberg in Hemprich & Ehrenberg, 1828 [1831]
- Marginotricha Jankowski, 1978
- Prodiscocephalus Jankowski, 1979
- Psammocephalus Wicklow, 1982
Erionellidae Wicklow, 1982
- Erionella Jankowski, 1978 [syn. of Holosticha]
Suborder Euplotina Small & Lynn, 1985
Aspidiscidae Ehrenberg, 1838
- Aspidisca Ehrenberg, 1830
- Euplotaspis Chatton & Séguéla, 1936
- Onychaspis Stein, 1859 [syn. of Aspidisca]Incertae sedis in Family Aspidiscidae
- Paraeuplotes Wichterman, 1942
Certesiidae Borror & Hill, 1995
- Certesia Fabre-Domergue, 1885
Euplotidae Ehrenberg, 1838
- Euplotes Ehrenberg, 1830 [Ehrenberg in Hemprich & Ehrenberg, 1831]
Gastrocirrhidae Fauré-Fremiet, 1961
- Cirrhogaster Ozaki & Yagiu, 1941 [syn. of Gastrocirrhus]
- Cytharoides Tuffrau, 1974 [1975]
- Euplotidium Noland, 1937
- Gastrocirrhus Lepsi, 1928
- Swedmarkia Dragesco, 1954
Uronychiidae Jankowski, 1979
- Diophryopsis Hill & Borror, 1992
- Diophrys Dujardin, 1840 [Levander, 1894]
- Paradiophrys Jankowski, 1978
- Uronychia Stein, 1857 [1859]
Subclass Choreotrichia Small & Lynn, 1985
Order Tintinnida Kofoid & Campbell, 1929
Ascampbelliellidae Corliss, 1960
- Acanthostomella Jörgensen, 1927
- Ascampbelliella Corliss, 1960
- Luxiella Lecal, 1953Incertae sedis in Family Ascampbelliellidae
- Niemarshallia Corliss, 1960
- Wailesia Kofoid & Campbell, 1939
Codonellidae Kent, 1881
- Amphorellina Colom, 1948
- Chitinoidella Doben, 1963
- Claretinella Keij, 1974
- Codonaria Kofoid & Campbell, 1939
- Codonella Haeckel, 1873
- Codonopsis Kofoid & Campbell, 1939
- Coxliellina Colom, 1948
- Crassicollaria Remane, 1962
- Dicloeopella Eicher, 1965
- Durandella Dragastan, 1972
- Lorenziella Knauer & Nagy, 1964
- Parachitinoidella Trejo, 1972
- Poroecus Cleve, 1902
- Praetintinnopsella Borza, 1969
- Pseudarcella Spandel, 1909
- Remanellina Tappan & Loeblich, 1968
- Remaniella Catalano, 1965
- Salpingellina Colom, 1948
- Spinarcella Keij, 1969
- Spinophenia Szczechura, 1969
- Tintinnopsella Colom, 1948
- Tintinnopsis Stein, 1867
- Tytthocorys Tappan & Loeblich, 1968
- Urnulella Szczechura, 1969 [not listed in Aescht]
- Vautrinella Cuvillier & Sacal, 1963
- Yvonniellina Tappan & Loeblich, 1968
Codonellopsidae Kofoid & Campbell, 1929
- Calpionella Lorenz, 1902
- Calpionellites Colom, 1948
- Calpionellopsella Trejo, 1975
- Calpionellopsis Colom, 1948 [syn. of Remaniella]
- Codonellopsis Jörgensen, 1924
- Colomiella Bonet, 1956
- Deflandronella Trejo, 1975
- Laackmanniella Kofoid & Campbell, 1929
- Praecalpionellopsis Borza, 1971
- Stenosemella Jörgensen, 1924
- Stenosemellopsis Colom, 1948Incertae sedis in Family Codonellopsidae
- Luminella Kofoid & Campbell, 1939
Cyttarocylididae Kofoid & Campbell, 1939
- Cyttarocylis Fol, 1881
Dictyocystidae Haeckel, 1873
- Dictyocysta Ehrenberg, 1854
- Wangiella Nie, 1934
Epiplocylididae Kofoid & Campbell, 1939
- Epicancella Kofoid & Campbell, 1929
- Epiplocylis Jörgensen, 1924
- Epiplocyloides Hada, 1938
Metacylididae Kofoid & Campbell, 1929
- Climacocylis Jörgensen, 1924
- Coxliella Brandt, 1908 [1907]
- Favelloides Colom, 1939 [Thalmann, 1942]
- Helicostomella Jörgensen, 1924
- Metacylis Jörgensen, 1924
- Pseudometacylis Balech, 1968
- Rhabdonelloides Colom, 1939
- Spiroxystonellites Knauer, 1969Incertae sedis in Family Metcylididae
- Rhizodomus Strelkov & Virketis, 1950 [Wirketis?]
- Stylicauda Balech, 1951
Nolaclusiliidae Sniezek et al., 1991
- Nolaclusilis Snyder & Brownlee, 1991
Petalotrichidae Kofoid & Campbell, 1929
- Parapetalotricha Hada, 1970
- Petalotricha Kent, 1881
Ptychocylididae Kofoid & Campbell, 1929
- Poroecus Cleve, 1902
- Protocymatocylis Kofoid & Campbell, 1929
- Ptychocylis Brandt, 1906 [1896]
Rhabdonellidae Kofoid & Campbell, 1929
- Epirhabdonella Kofoid & Campbell, 1939
- Protorhabdonella Jörgensen, 1924
- Rhabdonella Brandt, 1906
- Rhabdonellopsis Kofoid & Campbell, 1929
Tintinnidae Claparède & Lachmann, 1858
- Albatrossiella Kofoid & Campbell, 1929
- Amphorellopsis Kofoid & Campbell, 1929
- Amphorides Strand, 1929 [1928]
- Brandtiella Kofoid & Campbell, 1929
- Bursaopsis Kofoid & Campbell, 1929
- Buschiella Corliss, 1960
- Canthariella Kofoid & Campbell, 1929
- Clevea Balech, 1948
- Dadayiella Kofoid & Campbell, 1929
- Daturella Kofoid & Campbell, 1929 [nomen dubium]
- Epicranella Kofoid & Campbell, 1929
- Eutintinnus Kofoid & Campbell, 1939
- Odontophorella Kofoid & Campbell, 1929
- Ormosella Kofoid & Campbell, 1929
- Proamphorella Kofoid & Campbell, 1939
- Prostelidiella Kofoid & Campbell, 1939
- Rhabdosella Kofoid & Campbell, 1929
- Salpingacantha Kofoid & Campbell, 1929
- Salpingella Jörgensen, 1924
- Salpingelloides Campbell, 1942
- Steenstrupiella Kofoid & Campbell, 1929
- Stelidiella Kofoid & Campbell, 1929
- Tintinnus Schrank, 1803
Tintinnidiidae Kofoid & Campbell, 1929
- Leprotintinnus Jörgensen, 1900 [1901]
- Tintinnidium Kent, 1881
Undellidae Kofoid & Campbell, 1929
- Amplectella Kofoid & Campbell, 1929
- Amplectellopsis Kofoid & Campbell, 1929
- Circundella Kofoid & Campbell, 1929 [not listed in Aescht]
- Micrundella Busch, 1949 [Loeblich & Tappan, 1968]
- Proplectella Kofoid & Campbell, 1929
- Undella Daday, 1887
- Undellopsis Kofoid & Campbell, 1929Incertae sedis in Family Undellidae
- Rotundocylis Kufferath, 1952 [not listed in Aescht]
Xystonellidae Kofoid & Campbell, 1929
- Cymatocylis Laackmann, 1910
- Favella Jörgensen, 1924
- Parafavella Kofoid & Campbell, 1929
- Parundella Jörgensen, 1924 [problems with type designation]
- Xystonella Brandt, 1906
- Xystonellopsis Jörgensen, 1924Incertae sedis in Family Xystonellidae
- Parafavelloides Deflandre & Deflandre-Rigaud, 1949 [delete -Rigaud]
Order Choreotrichida Small & Lynn, 1985Suborder Leegaardiellina Laval-Peuto, Grain & Deroux, 1994
Leegaardiellidae Lynn & Montagnes, 1988
- Leegaardiella Lynn & Montagnes, 1988
Suborder Lohmanniellina Laval-Peuto, Grain & Deroux, 1994
Lohmanniellidae Montagnes & Lynn, 1991
- Lohmanniella Leegaard, 1915
Suborder Strobilidiina Small & Lynn, 1985
Strobilidiidae Kahl in Doflein & Reichenow, 1929
- Patronella Corliss, 1979 [syn. of Strombidium or Strobilidium]
- Strobilidium Schewiakoff, 1893Incertae sedis in Family Strobilidiidae
- Ciliospina Leegaard, 1915 [nomen dubium]
- Sphaerotrichium Wulff, 1919 [syn. of Lohmaniella or Strobilidium]
Suborder Strombidinopsina Small & Lynn, 1985
Strombidinopsidae Small & Lynn, 1985
- Strombidinopsis Kent, 1881
Subclass Stichotrichia Small & Lynn, 1985
Order Plagiotomida Albaret, 1974
Plagiotomidae Bütschli, 1887
- Plagiotoma Dujardin, 1841
Order Stichotrichida Fauré-Fremiet, 1961
Amphisiellidae Jankowski, 1979
- Amphisiella Gourret & Roeser, 1888
- Amphisiellides Hemberger, 1985 [Foissner, 1988]
- Circinella Foissner, 1994
- Gastrostyla Engelmann, 1862
- Hemiamphisiella Foissner, 1988
- Orthoamphisiella Eigner & Foissner, 1991
- Paragastrostyla Hemberger, 1981
- Paramphisiella Foissner, 1982 [1988]
- Periholosticha Hemberger, 1982 [1985]
- Psammomitra Borror, 1972 [syn. of Uroleptus]
- Pseudouroleptus Hemberger, 1981 [1985]
- Uroleptoides Wenzel, 1953
Epiclintidae Wicklow & Borror, 1990- Epiclintes Stein, 1862 [Carey & Tatchell, 1983]
Kahliellidae Tuffrau, 1979- Cladotricha Gajewskaja, 1926
- Deviata Eigner, 1995
- Engelmanniella Foissner, 1982
- Kahliella Corliss, 1960
- Neogeneia Eigner, 1995
- Parakahliella Berger, Foissner & Adam, 1985
- Paraurostyla Borror, 1972
- Parentocirrus Voss, 1997
- Pseudokahliella Berger, Foissner & Adam, 1985
- Trachelochaeta Òrámek-Husek, 1954
- Wallackia Foissner, 1977 [1976]Incertae sedis in Family Kahliellidae
- Balladyna Kowalewski, 1882
- Banyulsella Dragesco, 1953 [1954]
- Lacazea Dragesco, 1960
Keronidae Dujardin, 1840- Kerona Ehrenberg, 1835 [Blochmann, 1886]
- Keronopsis Penard, 1922
- Paraholosticha Kahl, 1932 [Wenzel, 1953]
Psilotrichidae Bütschli, 1889- Hemiholosticha von Gelei, 1954
- Psilotricha Stein, 1859
Spirofilidae von Gelei, 1929- Atractos Vörösváry, 1950
- Chaetospira Lachmann, 1856
- Hypotrichidium Ilowaisky, 1921
- Microspiretta Jankowski, 1975
- Mucotrichidium Foissner, Oleksiv & Müller, 1990
- Plesiotricha Dragesco, 1970 [syn of Kahliella microstoma]
- Spiretella Borror, 1972 [obj. syn. of Microspiretta]
- Spirofilopsis Corliss, 1960
- Stichotricha Perty, 1849
- Strongylidium Sterki, 1878
- Urospinula Corliss, 1960
- Urostrongylum Kahl, 1932Incertae sedis in Family Spirofilidae
- Kahliela Tucolesco, 1962
Strongylidiidae Fauré-Fremiet, 1961- Parastrongylidium Fleury & Fryd-Versavel, 1984 [1985]
- Urostrongylidium Kahl, 1932 [not listed in Aescht]Incertae sedis in Order Stichotrichida
- Balladinopsis Ghosh, 1921 [nomen dubium]
- Klonostricha Vuxanovici, 1963 [Jankowski, 1979]
- Prooxytricha Poche, 1913 [syn. of Urostyla]
- Psilotrix Gourret & Roeser, 1888
- Stylonethes Sterki, 1878 [nomen dubium]
Order Sporadotrichina Fauré-Fremiet, 1961
Oxytrichidae Ehrenberg, 1838
- Actinotricha Cohn, 1866 [syn. of Oxytricha]
- Ancystropodium Fauré-Fremiet, 1907
- Australocirrus Blatterer & Foissner, 1988
- Balladynella Stiller, 1974 [not available; Jankowski, 1979]
- Coniculostomum Njiné, 1978
- Cyrtohymena Foissner, 1989
- Histriculus Corliss, 1960
- Laurentiella Dragesco & Njiné, 1971
- Notohymena Blatterer & Foissner, 1988
- Onychodromopsis Stokes, 1887
- Onychodromus Stein, 1859
- Opisthotricha Kent, 1882 [syn. of Oxytricha]
- Oxytricha Bory de St. Vincent in Lamouroux, Bory de St. Vincent and Deslongchamps, 1824 [Foissner & Adam, 1983]
- Parahistriculus Grolière, 1976 [1975; syn. of Histriculus?]
- Parastylonychia Dragesco, 1963
- Parurosoma von Gelei, 1954
- Pleurotricha Stein, 1859
- Pseudostrombidium Horváth, 1933
- Steinia Diesing, 1866
- Sterkiella Foissner, Blatterer, Berger & Kohmann, 1991
- Stylonychia Ehrenberg, 1830
- Tachysoma Stokes, 1887 [Borror, 1972]
- Urosoma Kowalewski, 1882 [Berger, 1999]
- Urosomoida Hemberger in Foissner, 1982
- Urosomoides Foissner, 1982 [not listed in Aescht]
Trachelostylidae Small & Lynn, 1985- Gonostomum Sterki, 1878
- Hemisincirra Hemberger, 1984
- Lamtostyla Buitkamp, 1977
- Terricirra Berger & Foissner, 1989
- Trachelostyla Kahl, 1932 [Borror, 1972]Incertae sedis in Order Sporadotrichida
- Allotricha Sterki, 1878
- Cinetoconia Renault, 1903 [& Roche, 1898; nomen dubium]
- Gruberella Corliss, 1960
Order Urostylida Jankowski, 1979
Pseudokeronopsidae Borror & Wicklow, 1983
- Bicoronella Foissner, 1995
- Keronella Wiackowski, 1985
- Pseudokeronopsis Borror & Wicklow, 1983
- Thigmokeronopsis Wicklow, 1981
- Tricoronella Blatterer & Foissner, 1988
Pseudourostylidae Jankowski, 1979- Pseudourostyla Borror, 1972
Urostylidae Bütschli, 1889- Australothrix Blatterer & Foissner, 1988
- Bakuella Agamaliev & Alekperov, 1976 [Jankowski, 1979]
- Birojima Berger & Foissner, 1989
- Eschaneustyla Stokes, 1886
- Hemicycliostyla Stokes, 1886
- Holosticha Wrzesniowski, 1877
- Notocephalus Petz, Song & Wilbert, 1988 [1995]
- Parabakuella Song & Wilbert, 1988 [syn. of Holostichides]
- Paraholosticha Kahl, 1932 [check]
- Paruroleptus Kahl, 1932 [syn. of Uroleptus]
- Perisincirra Jankowski, 1978
- Territricha Berger & Foissner, 1988
- Trichototaxis Stokes, 1891
- Urostyla Ehrenberg, 1830
- Uroleptopsis Kahl, 1932
- Uroleptus Ehrenberg, 1831 [Foissner, Blatterer, Berger & Kohmann, 1991]Incertae sedis in Subclass Stichotrichia
- Cossothigma Jankowski, 1978
- Gastrosticha Kahl, 1932 [nomen dubium]
- Hemianthophorus Ehrenberg, 1838 [check source?]
- Paramitrella Jankowski, 1978
- Pelagotrichidium Jankowski, 1978
- Pescozoon Jankowski, 1978
- Stenotricha Jankowski, 1978
- Uncinata Bullington, 1940
Subclass Oligotrichia Bütschli, 1887
Order Halteriida Petz & Foissner, 1992
Halteriidae Claparède & Lachmann, 1858
- Cephalotrichium Meunier, 1910 [syn. of Strobilidium]
- Halteria Dujardin, 1841
- Halterioforma Horváth, 1956 [syn. of Jeannellia]
- Meseres Schewiakoff, 1893 [1892]
- Metastrombidium Fauré-Fremiet, 1924 [Jankowski, 1980]
- Parastrombidium Fauré-Fremiet, 1924 [syn. of Strobilidium]
- Pelagohalteria Foissner, Skogstad & Pratt, 1988Incertae sedis in Family Halteriidae
- Jeannellia Tucolesco, 1962 [syn. of Halterioforma]
- Octocirrus Rao, 1928 [or Madhava Rao, 1929; nomen dubium]
- Spelaeonecta Jankowski, 1975 [not available]
Order Stombidiida Petz & Foissner, 1992
Strombidiidae Fauré-Fremiet, 1970
- Buehringa Busch, 1921 [syn. of Strombidium]
- Cyrtostrombidium Lynn & Gilron, 1993
- Laboea Lohmann, 1908
- Strombidium Claparède & Lachmann, 1859
- Tontonia Fauré-Fremiet, 1961 [1914]Incertae sedis in Class SPIROTRICHEA
Class ARMOPHOREA [authorship?]
Order Armophorida Jankowksi, 1964
Caenomorphidae Poche, 1913
- Caenomorpha Perty, 1852
- Cirranter Jankowski, 1964
- Ludio Penard, 1922
Metopidae Kahl, 1927- Bothrostoma Stokes, 1887
- Brachonella Jankowski, 1964
- Eometopus Small & Lynn, 1985
- Metopus Claparède & Lachmann, 1858 [Kahl, 1932]
- Palmarella Jankowski, 1975
- Parametopus Grolière, de Puytorac & Grain, 1980 [Parametopidium Aescht, 2001]
- Spirorhynchus da Cunha, 1915 [syn. of Metopus]
- Tesnospira Jankowski, 1964 [syn. of Metopus]
- Tropidoatractus Levander, 1884 [1894]
Order Clevelandellida de Puytorac & Grain, 1976
Clevelandellidae Kidder, 1938
- Clevelandella Kidder, 1938
- Metaclevelandella Uttangi & Desai, 1963
- Paraclevelandia Kidder, 1937
Inferostomatidae Ky, 1971
- Inferostoma Ky, 1971
Neonyctotheridae Affa'a, 1987
- Neonyctotherus Affa'a, 1983
Nyctotheridae Amaro, 1972
- Cichlidotherus Affa'a, 1989
- Metanyctotherus Albaret, 1970
- Nyctositum Affa'a, 1979
- Nyctotheroides Grassé, 1928
- Nyctotherus Leidy, 1849
- Paracichlidotherus Grim, 1992
- Pronyctotherus Albaret & Njiné, 1976
- Pygmotheroides Affa'a, 1979 [1980]
Sicuophoridae Amaro, 1972
- Geimania Albaret, 1975
- Metasicuophora Albaret, 1973
- Parasicuophora Albaret, 1968
- Prosicuophora de Puytorac & Oktem, 1967
- Sicuophora de Puytorac & Grain, 1969 [1968]Incertae sedis in Family Sicuophoridae
- Ichthyonyctus Jankowski, 1974
Incertae sedis in Order Clevelandellida
Nathellidae Singh, 1953
- Nathella Singh, 1953 [nomen nudum]
Order Odontostomatida Sawaya, 1940
Discomorphellidae Corliss, 1960
- Discomorphella Corliss, 1960
Epalxellidae Corliss, 1960
- Atopodinium Kahl, 1932
- Epalxella Corliss, 1960
- Pelodinium Lauterborn, 1908
- Saprodinium Lauterborn, 1908
Mylestomatidae Kahl in Doflein & Reichenow, 1929
- Mylestoma Kahl, 1928
Class LITOSTOMATEA Small & Lynn, 1981
Subclass Haptoria Corliss, 1974
Order Cyclotrichida Jankowski, 1980
Mesodiniidae Jankowski, 1980
- Askenasia Blochmann, 1895 [Kahl, 1930]
- Mesodinium Stein, 1862 [1863]
- Myrionecta Jankowski, 1976 [nomen nudum]
- Pelagovasicola Jankowski, 1980
- Rhabdoaskenasia Krainer & Foissner, 1990
Order Haptorida Corliss, 1974
Acropisthiidae Foissner & Foissner, 1988
- Acropisthium Perty, 1852
- Fuscheria Foissner, 1983
Actinobolinidae Kahl, 1930
- Actinobolina Strand, 1928
- Belonophrya André, 1914
- Dactylochlamys Lauterborn, 1901
- Legendrea Fauré-Fremiet, 1908
Didiniidae Poche, 1913
- Astrostoma Alekperov in Corliss, 1979 [nomen nudum]
- Choanostoma Wang, 1931 [nomen dubium]
- Cyclotrichium Meunier, 1910
- Didinium Poche, 1913 [Stein, 1859]
- Dinophrya Bütschli, 1889 [syn. of Acropisthium]
- Liliimorpha Gajewskaja, 1928
- Monodinium Fabre-Domergue, 1888
- Zonotrichium Meunier, 1910
Enchelyidae Ehrenberg, 1838
- Crobylura André, 1914
- Enchelydium Kahl, 1930
- Enchelys O. F. Müller, 1773
- Haematophagus Woodcock & Lodge, 1921
- Ileonema Stokes, 1884
- Lagynurus Mansfeld, 1923
- Longitricha Gajewskaja, 1933
- Microregma Kahl, 1930
- Nannophrya Kahl, 1933
- Papillorhabdos Foissner, 1984
- Pithothorax Kahl, 1926
- Quasillagilis Busch, 1920 [nomen dubium]
- Rhopalophrya Kahl, 1926 [not available]
- Schewiakoffia Corliss, 1960 [nomen dubium]
- Spasmostoma Kahl, 1927
- Sphaerobactrum Schmidt, 1920
- Thalassiomastix Busch, 1923 - Urochaenia Savi, 1913Incertae sedis in Family Enchelyidae
- Microcardiosoma Vuxanovici, 1963
- Microchoanostoma Vuxanovici, 1963
Helicoprorodontidae Small & Lynn, 1985
- Helicoprorodon Fauré-Fremiet, 1950
Homalozoonidae Jankowski, 1980
- Homalozoon Stokes, 1890
Lacrymariidae de Fromentel, 1876
- Lacrymaria Bory de St. Vincent, 1826 [1824]
- Phialina Bory de St. Vincent, 1824
Pleuroplitidae Foissner, 1996
- Pleuroplites Foissner, 1988
Pseudoholophryidae Berger, Foissner & Adam, 1984
- Ovalorhabdos Foissner, 1984
- Paraenchelys Foissner, 1983
- Pseudoholophrya Berger, Foissner & Adam, 1983 [1984]
Pseudotrachelocercidae Song, 1990
- Pseudotrachelocerca Song, 1990
Spathidiidae Kahl in Doflein & Reichenow, 1929
- Arcuospathidium Foissner, 1984
- Bryophyllum Kahl, 1931
- Cranotheridium Schewiakoff, 1893
- Diceratula Corliss, 1960 [nomen dubium]
- Epispathidium Foissner, 1984
- Lacerus Jankowski, 1967
- Micromidas Delphy, 1938
- Myriokaryon Jankowski, 1973
- Penardiella Kahl, 1930
- Perispira Stein, 1859
- Protospathidium Dragesco & Dragesco-Kernéis, 1979 [Foissner, 1984]
- Spathidiodes Kahl, 1926
- Spathidioides Brodsky, 1925
- Spathidiosus Gajewskaja, 1933
- Spathidium Dujardin, 1841
- Supraspathidium Foissner & Didier, 1981
- Thysanomorpha Jankowski, 1967Incertae sedis in Family Spathidiidae
- Proboscidium Meunier, 1910 [nomen dubium]
Tracheliidae Ehrenberg, 1838
- Branchiocetes Kahl, 1931 [nomen nudum]
- Dileptus Dujardin, 1840 [1841]
- Dimacrocaryon Jankowski, 1967
- Micruncus Delphy, 1938
- Monilicaryon Jankowski, 1967
- Paradileptus Wenrich, 1929
- Rimaleptus Foissner, 1984
- Teuthophrys Chatton & de Beauchamp, 1923
- Trachelius Schrank, 1803Incertae sedis in Family Tracheliidae
- Ctenoctophrys Weill, 1946 [not listed in Aescht]
Trachelophyllidae Kent, 1882
- Acaryophrya Perty, 1852 [André, 1915]
- Chaenea Quennerstedt, 1867
- Enchelyodon Claparède & Lachmann, 1859
- Foissnerides Song & Wilbert, 1989
- Lagynophrya Kahl, 1927
- Lepidotrachelophyllum Nicholls & Lynn, 1984 [Foissner, 1994?]
- Trachelophyllum Claparède & Lachmann, 1859
Order Pleurostomatida Schewiakoff, 1896
Amphileptidae Bütschli, 1889
- Amphileptus Ehrenberg, 1830
- Opisthodon Stein, 1859
- Pseudoamphileptus Foissner, 1983
Litonotidae Kent, 1882
- Acineria Dujardin, 1841
- Heminotus Kahl, 1933
- Litonotus Wresniowski, 1870 [Foissner, Berger, Blatterer & Kohmann, 1995]
- Loxophyllum Dujardin, 1841
- Siroloxophyllum Foissner & Leipe, 1995Incertae sedis in Subclass Haptoria
- Baznosanuia Tucolesco, 1962
- Celerita Tucolesco, 1962
- Pseudoenchelys Tucolesco, 1962 [syn. of Enchelydium]
- Racovitzaia Tucolesco, 1962 [Racovitzaiella Aescht, 2001]
Protohalliidae da Cunha & Muniz, 1927
- Protohallia da Cunha & Muniz, 1927
Subclass Trichostomatia Bütschli, 1889
Order Vestibuliferida de Puytorac et al., 1974
Balantidiidae Reichenow in Doflein & Reichenow, 1929
- Balantidium Claparède & Lachmann, 1858
Isotrichidae Bütschli, 1889
- Bitricha Cameron, O'Donoghue & Adlard, 2000
- Dasytricha Schuberg, 1888
- Isotricha Stein, 1859
- Protoisotricha Kopperi, 1937 [1935]
Paraisotrichidae da Cunha, 1917
- Enterophrya Hasselmann, 1918
- Paraisotricha Fiorentini, 1890
- Rhizotricha Wolska, 1964Incertae sedis in Family Paraisotrichidae
- Helicozoster Latteur, 1967
Pycnotrichidae Poche, 1913
- Collinina Chatton & Pérard, 1921 [1924]
- Infundibulorium Bozhenko, 1925
- Nicollella Chatton & Pérard, 1919
- Pycnothrix Schubotz, 1908 [1909]
- Vestibulongum Grim, 1988Incertae sedis in Order Vestibuliferida
- Buxtonella Jameson, 1926
- Muniziella da Fonseca, 1939
- Taliaferria Hegner & Rees, 1933
Protocaviellidae Grain in Corliss, 1979
- Hydrochoerella da Cunha & Muniz, 1925
- Protocaviella Kopperi, 1937 [1935]
Order Entodiniomorphida Reichenow in Doflein & Reichenow, 1929
Suborder Archistomatina de Puytorac et al., 1974
Buetschliidae Poche, 1913
- Alloiozona Hsiung, 1930
- Ampullacula Hsiung, 1930
- Amylophorus Pereira & Almeida, 1942
- Blepharocodon Bundle, 1895
- Blepharoconus Gassovsky, 1919
- Blepharomonas Kopperi, 1937
- Blepharoplanum Kopperi, 1937
- Blepharoposthium Bundle, 1895
- Blepharosphaera Bundle, 1895
- Blepharozoum Gassovsky, 1919
- Buetschlia Schuberg, 1888
- Buissonella de Cunha & Muniz, 1925
- Bundleia da Cunha & Muniz, 1928
- Cucurbella Thurston & Grain, 1971
- Didesmis Fiorentini, 1890
- Hemiprorodon Strelkow, 1939
- Holophryoides Gassovsky, 1919
- Holophryozoon Jirovec, 1933
- Kopperia Corliss, 1960
- Levanderella Kopperi, 1937
- Meiostoma Sandon, 1941
- Paraisotrichopsis Gassovsky, 1919
- Pingius Hsiung, 1932
- Polymorphella Corliss, 1960
- Prorodonopsis Gassovsky, 1919
- Protolutzia da Cunha & Muniz, 1925
- Pseudobuetschlia Jirovec, 1933
- Sciurula Corliss, 1960
- Sulcoarcus Hsiung, 1935
- Wolskana Ito, Ogimoto & Nakahara, 1996
Suborder Blepharocorythina Wolska, 1971
Blepharocorythidae Hsiung, 1929
- Blepharocorys Bundle, 1895
- Charonina Strand, 1928
- Charonnautes Strelkow, 1939
- Circodinium Wolska, 1971
- Ochoterenaia Chavarria, 1933
- Pararaabena Wolska, 1968
- Raabena Wolska, 1967
- Spirocorys Wolska, 1969
Suborder Entodiniomorphina Reichenow in Doflein & Reichenow, 1929
Cycloposthiidae Poche, 1913
- Bertolinella Carpano, 1941
- Bozasella Buisson, 1923
- Cycloposthium Bundle, 1895
- Diplolophus Hollande & Batisse, 1959 [nomen nudum]
- Lavierella Buisson, 1923
- Prototapirella da Cunha, 1919 [1918]
- Toxodinium da Cunha, 1938
- Tricaudalia Buisson, 1923
- Trifascicularia Strelkow, 1931
- Tripalmaria Gassovsky, 1919
- Triplumaria Hoare, 1937Incertae sedis in Family Cycloposthiidae
- Monoposthium Thurston & Noirot-Timothée, 1973
- Parentodinium Thurston & Noirot-Timothée, 1973
Ditoxidae Strelkow, 1939
- Ditoxum Gassovsky, 1919
- Tetratoxum Gassovsky, 1919
- Triadinium Fiorentini, 1890
Macropodiniidae Dehority, 1996
- Macropodinium Dehority, 1996
Ophryoscolecidae Stein, 1859
- Caloscolex Dogiel, 1926
- Campylodinium Jankowski, 1975
- Cunhaia Hasselmann, 1918 [1924]
- Diplodinium Schuberg, 1888
- Diploplastron Kofoid & MacLennan, 1932
- Elytroplastron Kofoid & MacLennan, 1932
- Enoploplastron Kofoid & MacLennan, 1932
- Entodinium Stein, 1859
- Eodinium Kofoid & MacLennan, 1932
- Epidinium Crawley, 1923
- Epiplastron Kofoid & MacLennan, 1933
- Eremoplastron Kofoid & MacLennan, 1932
- Eudiplodinium Dogiel, 1927
- Metadinium Awerinzew & Mutafowa, 1914
- Ophryoscolex Stein, 1859
- Opisthotrichium Buisson, 1923 [Dogiel, 1927]
- Ostracodinium Dogiel, 1927
- Polyplastron Dogiel, 1927
Polydiniellidae Corliss, 1960
- Elephantophilus Kofoid, 1935
- Polydiniella Corliss, 1960
- Pterodinium Latteur & Dartevelle, 1971 [Pterodiniella Aescht, 2001]
- Thoracodinium Latteur, 1958
Rhinozetidae Van Hoven, Gilchrist & Hamilton-Attwell, 1988
- Rhinozeta Van Hoven, Gilchrist & Hamilton-Attwell, 1988
Spirodiniidae Strelkow, 1939
- Cochliatoxum Gassovsky, 1919
- Spirodinium Fiorentini, 1890
Telamodiniidae Latteur & Dufey, 1967
- Megadinium Latteur & Dufey, 1967
- Telamodinium Latteur & Dufey, 1967
- Teratodinium Latteur & Dufey, 1967
Troglodytellidae Corliss, 1979
- Gorillophilus Imai, Ikeda, Collet & Bonhomme, 1991
- Troglodytella Brumpt & Joyeux, 1912
Class PHYLLOPHARYNGEA de Puytorac et al., 1974
Subclass Phyllopharyngia de Puytorac et al., 1974
Order Chlamydodontida Deroux, 1976
Chilodonellidae Deroux, 1970
- Chilodonatella Dragesco, 1966
- Chilodonella Strand, 1928
- Phascolodon Stein, 1859
- Pseudochilodonopsis Foissner, 1979
- Thigmogaster Deroux, 1976
- Trithigmostoma Jankowski, 1967Incertae sedis in Family Chilodonellidae
- Odontochlamys Certes, 1891
- Phyllotrichum Engelmann, 1875 [Engelmann in Bütschli, 1889]
Chitonellidae Small & Lynn, 1985
- Chitonella Small & Lynn, 1985
Chlamydodontidae Stein, 1859
- Chlamydodon Ehrenberg, 1835
- Cyrtophoron Deroux, 1975
Gastronautidae Deroux, 1994
- Gastronauta Bütschli, 1889 [Engelmann in Bütschli, 1889 or Engelmann, 1875]
Kryoprorodontidae Alekperov & Mamajeva, 1992
- Gymnozoum Meunier, 1910
Lynchelliae Jankowski, 1968
- Atopochilodon Kahl, 1933
- Chlamydonella Deroux, 1970 [Petz, Song & Wilbert, 1995]
- Chlamydonellopsis Blatterer & Foissner, 1990
- Coeloperix Deroux, 1976 [1978; nomen nudum]
- Lynchella Kahl, 1933 [Jankowski, 1968]Incertae sedis in Family Lynchellidae
- Lophophorina Penard, 1922
Order Dysteriida Deroux, 1976
Dysteriidae Claparède & Lachmann, 1858
- Agnathodysteria Deroux, 1977 [1976]
- Allosphaerium Kidder & Summers, 1935
- Dysteria Huxley, 1857
- Hartmannulopsis Deroux & Dragesco, 1968
- Microdysteria Kahl, 1933 [not listed in Aescht]
- Schedotrochilia Deroux, 1977 [1976]
- Trochilia Dujardin, 1841
Hartmannulidae Poche, 1913
- Aegyriana Deroux, 1975 [syn. of Dysteria]
- Brooklynella Lom & Nigrelli, 1970
- Chlamydonyx Deroux, 1977 [1976]
- Hartmannula Poche, 1913
- Microxysma Deroux, 1977 [1976]
- Orthotrochilia Deroux, 1977 [nomen nudum]
- Paratrochilia Kahl, 1933
- Sigmocineta Jankowski, 1967
- Trichopodiella Corliss, 1960
- Trochilioides Kahl, 1931 [nomen nudum]Incertae sedis in Family Hartmannulidae
- Horocontus Deroux, 1977 [1976]
Kyaroikeidae Sniezek & Coats, 1996
- Kyaroikeus Sniezek, Coats & Small, 1995
Plesiotrichopidae Deroux, 1976
- Atelepithites Deroux, 1976
- Parachilodonella Dragesco, 1966
- Pithites Deroux & Dragesco, 1968
- Plesiotrichopus Fauré-Fremiet, 1965
- Trochochilodon Deroux, 1976Incertae sedis in Subclass Phyllopharyngia
- Dysterioides Matthes, 1950
Subclass Chonotrichia Wallengren, 1895
Order Exogemmida Jankowski, 1972
Chilodochonidae Wallengren, 1895
- Chilodochona Wallengren, 1895
- Mystichona Jankowski, 1972 [nomen nudum]
- Vasichona Jankowski, 1972
Filichonidae Jankowski, 1973
- Aurichona Jankowsi, 1973
- Filichona Jankowski, 1973
Heliochonidae Jankowski, 1972
- Heliochona Plate, 1888 [1889]
- Heterochona Jankowski, 1972
Lobochonidae Jankowski, 1967
- Lobochona Dons, 1940
- Oenophorachona Matsudo & Mohr, 1968
- Physochona Batisse & Crumeyrolle, 1988
- Toxochona Jankowski, 1972
Phyllochonidae Jankowski, 1972
- Phyllochona Jankowski, 1972
Spirochonidae Stein, 1854
- Cavichona Jankowski, 1973
- Serpentichona Jankowski, 1973
- Spirochona Stein, 1852Sedis mutabilis in Order Exogemmida
- Eleutherochona Jankowski, 1971 [nomen nudum]
Order Cryptogemmida Jankowski, 1975
Actinichonidae Jankowski, 1973
- Actinichona Jankowski, 1973
- Carinichona Jankowski, 1973
- Crassichona Jankowski, 1973
- Cristichona Jankowski, 1973
- Kentrochonopsis Doflein, 1897
- Rhizochona Jankowski, 1973
Echinichonidae Jankowski, 1973
- Coronochona Jankowski, 1973
- Echinichona Jankowski, 1973
- Eurychona Jankowski, 1973
Inversochonidae Jankowski, 1973
- Ceratochona Jankowski, 1973
- Chonosaurus Jankowski, 1973
- Inversochona Jankowski, 1973
- Kentrochona Rompel, 1894
- Pleochona Jankowski, 1973
Isochonidae Jankowski, 1973
- Cyamichona Jankowski, 1971
- Inermichona Jankowski, 1971
- Isochona Jankowski, 1973
- Thalassochona Jankowski, 1971
- Trichochona Mohr, 1948
Isochonopsidae Batisse & Crumeyrolle, 1988
- Isochonopsis Batisse & Crumeyrolle, 1988
Stylochonidae Mohr, 1948
- Armichona Jankowski, 1973
- Ctenochona Jankowski, 1973
- Dentichona Jankowski, 1973
- Eriochona Jankowski, 1973
- Flectichona Jankowski, 1973
- Oxychonina Corliss, 1979
- Paraoxychona Jankowski, 1973
- Pterochona Jankowski, 1973
- Spinichona Jankowski, 1973
- Stylochona Kent, 1881
Subclass Rhynchodia Chatton & Lwoff, 1939
Order Rhynchodida Chatton & Lwoff, 1939
Suborder Ancistrocomina Chatton & Lwoff, 1939
Ancistrocomidae Chatton & Lwoff, 1939
- Ancistrocoma Chatton & Lwoff, 1926
- Anisocomides Chatton & Lwoff, 1950
- Colligocineta Kozloff, 1965
- Crebricoma Kozloff, 1946
- Enerthecoma Jarocki, 1935
- Goniocoma Chatton & Lwoff, 1950
- Heterocinetopsis Jarocki, 1935
- Holocoma Chatton & Lwoff, 1950
- Hypocomagalma Jarocki & Raabe, 1932
- Hypocomatidium Jarocki & Raabe, 1932
- Hypocomella Chatton & Lwoff, 1924
- Hypocomides Chatton & Lwoff, 1922
- Hypocomidium Raabe, 1938
- Hypocomina Chatton & Lwoff, 1924
- Ignotocoma Kozloff, 1961
- Insignicoma Kozloff, 1946
- Isocomides Chatton & Lwoff, 1950
- Kozloffiella Raabe, 1970
- Nordicoma Jankowski in Corliss, 1979 [nomen nudum]
- Raabella Chatton & Lwoff, 1950
- Stegotricha Bower & Meyer, 1993
- Syringopharynx Collin, 1914 [1915; syn. of Ancistrocoma]Incertae sedis in Family Ancistrocomidae
- Cepedella Poyarkoff, 1909
Suborder Rhynchodina Chatton & Lwoff, 1939
Sphenophryidae Chatton & Lwoff, 1921
- Gargarius Chatton & Lwoff, 1934
- Pelecyophrya Chatton & Lwoff, 1922
- Sphenophrya Chatton & Lwoff, 1921Incertae sedis in Order Rhynchodida
- Lwoffia Kozloff, 1955
Order Hypocomatida Deroux, 1976
Hypocomidae Bütschli, 1889
- Crateristoma Jankowski, 1967
- Hypocoma Gruber, 1884
- Parahypocoma Chatton & Lwoff, 1939
- Rhynchocoma Jankowski, 1975
Subclass Suctoria Claparède & Lachmann, 1858
Order Exogenida Collin, 1912
Corynophryidae Jankowski, 1981
- Corynophrya Kahl, 1934 [Curds, 1987]
Ephelotidae Kent, 1882
- Actinocyathula Corliss, 1960
- Ephelota Wright, 1858
- Metephelota Willis, 1945
- Podocyathus Kent, 1882
- Tunicophrya Jankowski, 1973
Metacinetidae Bütschli, 1889
- Metacineta Bütschli, 1889
Ophryodendridae Stein, 1867
- Loricodendron Jankowski, 1973 [not recognized by Matthes]
- Ophryodendron Claparède & Lachmann, 1859
- Schizactinia Jankowski, 1967
Paracinetidae Jankowski, 1978
- Paracineta Collin, 1911
Parapodophryidae Jankowski, 1973
- Parapodophrya Kahl, 1931
Phalacrocleptidae Kozloff, 1966
- Phalacrocleptes Kozloff, 1966
Podophryidae Haeckel, 1866
- Gajewskajophrya Matthes, 1988
- Kystopus Jankowski, 1967 [syn. of Podophrya]
- Manuelophrya Matthes, 1988 [Jankowski, 1997]
- Mistarcon Jankowski, 1997
- Mucophrya Gajewskaja, 1928
- Ophryocephalus Wailes, 1925
- Podophrya Ehrenberg, 1838 [1834]
- Sphaerophrya Claparède & Lachmann, 1859Incertae sedis in Family Podophryidae
- Lecanophrya Kahl, 1934
Rhabdophryidae Jankowski, 1970
- Dendrosomides Collin, 1906 [1905]
- Rhabdophrya Chatton & Collin, 1910
- Trophogemma Jankowski, 1970
Spelaeophryidae Jankowski in Batisse, 1975
- Spelaeophrya Stammer, 1935
Stylostomatidae Batisse, 1975
- Asterifer Jankowski, 1967 [not recognized by Matthes]
- Stylostoma Milne, 1886
Tachyblastonidae Grell, 1950
- Tachyblaston Martin, 1909
Thecacinetidae Matthes, 1956
- Canellana Jankowski, 1967 [syn. of Acineta]
- Praethecacineta Matthes, 1956
- Thecacineta Collin, 1909 [1912]
Urnulidae Fraipont, 1878
- Urnula Claparède & Lachmann, 1859 [1857]
Order Endogenida Collin, 1912
Acinetidae Stein, 1859
- Acineta Ehrenberg, 1833 [1834]
- Acinetides Swarczewsky, 1928
- Acinetopsis Robin, 1879
- Arcosoma Jankowski, 1967
- Cryptophrya Jankowski, 1973
- Dactylophrya Collin, 1909 [syn. of Tachyblaston]
- Lecanodiscus Jankowski, 1973
- Loricophrya Matthes, 1956
- Plicophrya Jankowski, 1975 [syn. of Acineta]
- Pseudocorynophrya Small & Lynn, 1985
- Pseudogemma Collin, 1909
- Pseudogemmides Kormos, 1935
- Solenophrya Claparède & Lachmann, 1859
- Squalorophrya Goodrich & Jahn, 1943 [potentially valid]
- Suctorella Frenzel, 1891 [1892]
- Tokophryella Jankowski, 1973
- Trematosoma Batisse, 1972 [1973]Incertae sedis in Family Acinetidae
- Cucumophrya Kunz, 1936
Dendrosomatidae Fraipont, 1878
- Baikalodendron Swarczewsky, 1928
- Baikalophrya Swarczewsky, 1928
- Brachysoma Batisse, 1975
- Dendrosoma Ehrenberg, 1838 [1837]
- Gorgonosoma Swarczewsky, 1928 [syn. of Dendrosoma]
- Lernaeophrya Pérez, 1903 [syn. of Trichophrya]
- Thaumatophrya Collin, 1912
- Tokophryopsis Swarczewsky, 1928
Enchelyomorphidae Augustin & Foissner, 1992
- Enchelyomorpha Kahl, 1930
Endosphaeridae Jankowski in Corliss, 1979
- Endosphaera Engelmann, 1876
- Physaliella Penard, 1920 [syn. of Trypanococcus]
- Trypanococcus Zacharias, 1885 [Stein in Zacharias, 1885]
Tokophryidae Jankowski in Small & Lynn, 1985
- Allantosoma Gassovsky, 1919
- Choanophrya Hartog, 1902
- Erastophrya Fauré-Fremiet, 1944 [1943]
- Hypophrya López-Ochoterena, 1964 [syn. of Tokophrya]
- Multifasciculatum Goodrich & Jahn, 1943
- Pottsiocles Corliss, 1960
- Pseudogemma Collin, 1909 [or in Acinetidae - check]
- Rhyncheta Zenker, 1866
- Staurophrya Zacharias, 1893
- Tokophrya Bütschli, 1889
Trichophryidae Fraipont, 1878
- Actinobranchium Jankowski, 1967
- Astrophrya Awerinzew, 1904 [syn. of Dendrosoma]
- Capriniana Mazzarelli, 1906 [Strand, 1928; syn. of Trichophrya]
- Heliophrya Saedeleer & Tellier, 1930 [Matthes, 1954]
- Marinecta Jankowski, 1973
- Phagobranchium Jankowski, 1967 [syn. of Capriniana or Trichophrya]
- Platophrya Gönnert, 1935 [obj. syn. of Heliophrya]
- Tetraedrophrya Zykoff, 1902 [nomen nudum]
- Trichophrya Claparède & Lachmann, 1859
Order Evaginogenida Jankowski in Corliss, 1979
Cyathodiniidae da Cuhna, 1914
- Cyathodinium da Cunha, 1914
Dendrocometidae Haeckel, 1866
- Cometodendron Swarczewsky, 1928
- Dendrocometes Stein, 1852
- Dendrocometides Swarczewsky, 1928
- Discosomatella Corliss, 1960
- Stylocometes Stein, 1867
- Stylophrya Swarczewsky, 1928
Discophryidae Collin, 1912
- Anarma Goodrich & Jahn, 1943 [syn. of Discophrya]
- Caracatharina Kormos, 1961 [Kormos in Corliss, 1960; syn. of Discophrya]
- Cyclophrya Gönnert, 1935
- Dactylostoma Jankowski, 1967
- Discophrya Lachmann, 1859
- Echinophrya Swarczewsky, 1928
- Periacineta Collin, 1909 [potentially valid]
- Peridiscophrya Nozawa, 1938
- Prodiscophrya Kormos, 1935
- Rhynchophrya Collin, 1909
- SqualorophryaGoodrich & Jahn, 1943 [potentially valid]
- Testudinicola Jahn, Bovee & Jahn, 1979 [potentially valid]Incertae sedis in Class PHYLLOPHARYNGEA
- Silenella Fenchel, 1965
Class NASSOPHOREA Small & Lynn, 1981
Order Synhymeniida de Puytorac et al., 1974
Orthodonellidae Jankowski, 1968
- Orthodonella Bhatia, 1936
- Zosterodasys Deroux, 1978Incertae sedis in Family Orthodonellidae
- Eucamptocerca da Cunha, 1914 [nomen dubium]
Nassulopsidae Deroux in Corliss, 1979
- Nassulopsis Fauré-Fremiet, 1959 [Foissner, Berger & Kohmann, 1994]
- Phasmatopsis Deroux, 1978 [obj. syn. of Beersena Jankowski, 1989]
Scaphidiodontidae Deroux, 1978
- Chilodontopsis Blochmann, 1895
- Scaphidiodon Stein, 1859
Synhymeniidae Jankowski in Small & Lynn, 1985
- Synhymenia Jankowski, 1967 [1968]
Order Nassulida Jankowski, 1967
Colpodidiidae Foissner, 1995
- Colpodidium Wilbert, 1982
- Pedohymena Foissner, 1995
Furgasoniidae Corliss, 1979
- Furgasonia Jankowski, 1964
- Parafurgasonia Foissner & Adam, 1981
Nassulidae de Fromentel, 1874
- Nassula Ehrenberg, 1833 [1834]
- Naxella Foissner & Donoghue, 1990 [Fryd-Versavel, Iftode & Deroux, 1980]
- Obertrumia Foissner & Adam, 1981 [Foissner, 1987]
- Rhinakis Iftode, Fryd & Deroux in Deroux, 1994 [nomen nudum]Incertae sedis in Family Nassulidae
- Archinassula Kahl, 1935
- Chilodina Srämek-Husek, 1957
- Cyrtohymenostoma Das, Chatterjee & Ray, 1969 [not available]
- Stomatophrya Kahl, 1933
Paranassulidae Fauré-Fremiet, 1962
- Enneameron Jankowski, 1964 [syn. of Nassulopsis]
- Paranassula Kahl, 1931
Order Microthoracida Jankowski, 1967
Discotrichidae Jankowski, 1967
- Discotricha Tuffrau, 1954
Microthoracidae Wrzesniowski, 1870
- Drepanomonas Fresenius, 1858
- Hemicyclium Eberhard, 1862 [syn. of Microthorax]
- Leptopharynx Mermod, 1914
- Microthorax Engelmann, 1862
- Stammeridium Wenzel, 1969
- Trochiliopsis Penard, 1922Incertae sedis in Family Microthoracidae
- Conchophrys Chatton, 1911
- Hexotricha Conn in Conn & Edmondson, 1918
Pseudomicrothoracidae Jankowski, 1967
- Pseudomicrothorax Mermod, 1914
Class COLPODEA Small & Lynn, 1981
Order Bryometopida Foissner, 1985
Bryometopidae Jankowski, 1980
- Bryometopus Kahl, 1932
- Thylakidium Schewiakoff, 1892 [1893]
Jaroschiidae Foissner, 1993
- Jaroschia Foissner, 1993
- Pentahymena Foissner, 1994
Kreyellidae Foissner, 1979
- Kreyella Kahl, 1931
- Microdiaphanosoma Wenzel, 1953
- Orthokreyella Foissner, 1984
Trihymenidae Foissner, 1988
- Trihymena Foissner, 1988
Order Bryophryida de Puytorac et al., 1979
Bryophryidae de Puytorac et al., 1979
- Bryophrya Wenzel, 1953
- Notoxoma Foissner, 1993
- Parabryophrya Foissner, 1985
- Puytoraciella Njiné, 1979
Order Bursariomorphida Fernández-Galiano, 1978
Bursariidae Bory de St. Vincent, 1826
- Bursaria O.F. Müller, 1773
Bursaridiidae Foissner, 1993
- Bursaridium Lauterborn, 1894
- Paracondylostoma Foissner, 1980
Order Colpodida de Puytorac et al., 1974
Bardeliellidae Foissner, 1984
- Bardeliella Foissner, 1984
Colpodidae Bory de St. Vincent, 1826
- Apocolpoda Foissner, 1993
- Bresslaua Kahl, 1931
- Colpoda O.F. Müller, 1773
- Corticocolpoda Foissner, 1993
- Cosmocolpoda Foissner, 1993
- Idiocolpoda Foissner, 1993
- Krassniggia Foissner, 1987
- Kuehneltiella Foissner, 1990
Grandoriidae Corliss, 1960
- Grandoria Corliss, 1960
Grossglockneriidae Foissner, 1980
- Grossglockneria Foissner, 1980
- Nivaliella Foissner, 1980
- Pseudoplatyophrya Foissner, 1980
Hausmanniellidae Foissner, 1987
- Avestina Jankowski, 1980
- Corallocolpoda Alekperov, 1991
- Bresslauides Blatterer & Foissner, 1988
- Hausmanniella Foissner, 1984
- Kalometopia Bramy, 1962
Marynidae Poche, 1913
- Ilsiella Foissner, 1987
- Maryna Gruber, 1879
- Mycterothrix Lauterborn, 1898 [Kahl, 1931]
- Opisthostomatella Corliss, 1960
Order Cyrtolophosidida Foissner, 1978
Cyrtolophosididae Stokes, 1888
- Aristerostoma Kahl, 1926
- Cyrtolophosis Stokes, 1885
- Pseudocyrtolophosis Foissner, 1980
Platyophryidae de Puytorac et al., 1979
- Cirrophrya Géllert, 1950
- Platyophrya Kahl, 1926
- Platyophryides Foissner, 1987
- Reticulowoodruffia Foissner, 1993
- Semiplatyophrya Wilbert & Kahan, 1986
Sagittariidae R. & L. Grandori, 1935
- Sagittaria R. & L. Grandori, 1934
Woodruffiidae von Gelei, 1954
- Kuklikophrya Njiné, 1979
- Rhyposophrya Kahl, 1935 [1933]
- Rostrophrya Njiné, 1979 [Foissner, 1993]
- Rostrophryides Foissner, 1987
- Woodruffia Kahl, 1931
- Woodruffides Foissner, 1987
Order Sorogenida Foissner, 1985
Sorogenidae Bradbury & Olive, 1980
- Sorogena Bradbury & Olive, 1980
Incertae sedis in Class COLPODEA
- Pseudoglaucoma Wenzel, 1953
- Rigchostoma Vuxanovici, 1963
- Telostomatella Foissner, 1985
Pseudochlamydonellidae Buitkamp et al., 1989
- Pseudochlamydonella Buitkamp, Song & Wilbert, 1989
Tectohymenidae Foissner, 1993
- Pseudokreyella Foissner, 1985
- Tectohymena Foissner, 1993
Class PROSTOMATEA Schewiakoff, 1896
Order Prostomatida Schewiakoff, 1896
Apsiktratidae Foissner, Berger & Kohmann, 1994
- Apsiktrata Foissner, Berger & Kohmann, 1994
Metacystidae Kahl, 1926
- Metacystis Cohn, 1866
- Pelatractus Kahl, 1930
- Vasicola Tatem, 1869
Order Prorodontida Corliss, 1974
Balanionidae Small & Lynn, 1985
- Balanion Wulff, 1922 [1919]
Colepidae Ehrenberg, 1838
- Baikalocoleps Obolkina, 1995
- Coleps Nitzsch, 1827
- Macrocoleps Obolkina, 1995
- Plagiopogon Stein, 1859
- Planicoleps Dragesco & Dragesco-Kernéis, 1991
- Tiarina Bergh, 1881
Holophryidae Perty, 1852
- Bursellopsis Corliss, 1960
- Holophrya Ehrenberg, 1831
- Pleurofragma Jankowski, 1976
Lagynidae Sola et al., 1990
- Lagynus Quennerstedt, 1867
Malacophryidae Foissner, 1980
- Malacophrys Kahl, 1926
Placidae Small & Lynn, 1985
- Placus Cohn, 1866
- Spathidiopsis Fabre-Domergue, 1889 [syn. of Plagiopogon or Placus]
Plagiocampidae Kahl, 1926
- Plagiocampa Schewiakoff, 1892 [1893]
Prorodontidae Kent, 1881
- Prorodon Ehrenberg, 1833 [1834]
Urotrichidae Small & Lynn, 1985
- Dissothigma Jankowski, 1976
- Rhagadostoma Kahl, 1926
- Urotricha Claparède & Lachmann, 1859Incertae sedis in Class PROSTOMATEA
- Amphibothrella R. & L. Grandori, 1934
- Peridion Vuxanovici, 1962
- Peridionella Vuxanovici, 1963
- Cryptocaryon Brown, 1951
Class PLAGIOPYLEA Small & Lynn, 1985
Order Plagiopylida Small & Lynn, 1985
Plagiopylidae Schewiakoff, 1896
- Lechriopyla Lynch, 1930
- Paraplagiopyla Thurston & Grain, 1971
- Plagiopyla Stein, 1860
- Pseudoplagiopyla Small & Lynn, 1985
Sonderiidae Small & Lynn, 1985
- Parasonderia Fauré-Fremiet, 1973 [nomen nudum]
- Sonderia Kahl, 1928
- Sonderiella Kahl, 1928
Trimyemidae Kahl, 1926
- Trimyema Lackey, 1925
Class OLIGOHYMENOPHOREA de Puytorac et al., 1974
Subclass Peniculia Fauré-Fremiet in Corliss, 1956
Order Peniculida Fauré-Fremiet in Corliss, 1956
Suborder Frontoniina Small & Lynn, 1985
Clathrostomatidae Kahl, 1926
- Clathrostoma Penard, 1922
Frontoniidae Kahl, 1926
- Didieria Small & Lynn, 1985
- Disematostoma Lauterborn, 1894
- Frontonia Ehrenberg, 1838
- Frontoniella Wetzel, 1927 [syn. of Frontonia]
- Paraclathrostoma Small & Lynn, 1985
- Wenrichia Jankowski, 1967 [syn. of Disematostoma]Incertae sedis in Family Frontoniidae
- Schistophrya Kahl, 1933
- Sigmostomum Gulati, 1925 [syn. of Frontonia]
Lembadionidae Jankowski in Corliss, 1979
- Lembadion Perty, 1849
Maritujidae Jankowski in Small & Lynn, 1985
- Marituja Gajewskaja, 1928
Stokesiidae Roque, 1961
- Parastokesia Jankowski, 1967 [syn. of Disematostoma]
- Stokesia Wenrich, 1929
Suborder Parameciina Jankowski in Small & Lynn, 1985
Parameciidae Dujardin, 1840
- Paramecium O.F. Müller, 1773
Incertae sedis in Family Parameciidae
- Physanter Jankowski, 1975
Neobursaridiidae Dragesco & Tuffrau, 1967
- Neobursaridium Balech, 1941
Urocentridae Claparède & Lachmann, 1858
- Urocentrum Nitzsch, 1827
Subclass Scuticociliatia Small, 1967
Order Philasterida Small, 1967
Cinetochilidae Perty 1852
- Cinetochilum Perty, 1849
- Platynematum Kahl, 1935 [Foissner, Berger & Kohmann, 1994; syn. of Colpodopsis]
- Pseudoplatynematum Bock, 1952
- Sathrophilus Corliss, 1960
- Sphenostomella Jankowski in Small & Lynn, 1985 [Jankowski, 1980]
Cohnilembidae Kahl, 1933
- Cohnilembus Kahl, 1933
- Porpostoma Moebius, 1888 [syn. of Helicostoma]
Cryptochilidae Berger in Corliss, 1979
- Biggaria Kahl, 1934 [Aescht, 2001]
- Biggariella Profant in Corliss, 1979 [nomen nudum]
- Cryptochilum Maupas, 1883
- Metaxystomium Berger in Corliss, 1979 [jun. syn. of Velistoma Jankowski, 1980]
- Metoikos Berger & Thompson in Corliss, 1979 [nomen nudum]
- Tanystomium Berger in Corliss, 1979
- Thigmozoon Santhakumari & Nair, 1973
- Velistoma Jankowski, 1980
- Yagiua Profant in Corliss, 1979 [nomen nudum]
Entodiscidae Jankowski, 1973
- Cryptochilidium Schouteden, 1906
- Entodiscus Madsen, 1931
- Pectenita Jankowski, 1973
Entorhipidiidae Madsen, 1931
- Entorhipidium Lynch, 1929
Loxocephalidae Jankowski, 1964
- Balanonema Kahl, 1931 [nomen nudum]
- Cardiostomatella Corliss, 1960
- Dexiotricha Stokes, 1885 [Foissner, Berger & Kohmann, 1994]
- Loxocephalus Eberhard, 1862
- Paradexiotricha Grolière, 1975
- Paraloxocephalus Small & Lynn, 1985
- Paratetrahymena Thompson, 1963
Orchitorphryidae Cépède, 1910
- Anophryoides de Puytorac & Grolière, 1979 [syn. of Paranophrys]
- Mesanophrys Small & Lynn, 1985 [S & L in Aescht, 2001]
- Metanophrys de Puytorac, Grolière, Roque & Detcheva, 1974
- Mugardia Small & Lynn, 1985 [jun. obj. syn. of Anophryoides]
- Orchitophrya Cépède, 1907
- Paranophrys Thompson & Berger, 1965
Paralembidae Corliss & de Puytorac in Small & Lynn, 1985
- Anophrys Cohn, 1866
- Cryptolembus Gunderson, 1985
- Magnalembus Small & Lynn, 1985
- Mesolembus Small & Lynn, 1985
- Ovolembus Small & Lynn, 1985
- Paralembus Kahl, 1933 [not available]
Parauronematidae Small & Lynn, 1985
- Glauconema Thompson, 1966
- Miamiensis Thompson & Moewus, 1964
- Parauronema Thompson, 1967
- Potomacus Thompson, 1966
Philasteridae Kahl, 1931
- Helicostoma Cohn, 1866
- Madsenia Kahl, 1934
- Paraphilaster Grolière, de Puytorac & Grain, 1980 [1978]
- Philaster Fabre-Domergue, 1885
- Philasterides Kahl, 1931
Pseudocohnilembidae Evans & Thompson, 1964
- Pseudocohnilembus Evans & Thomspon, 1964 [Foissner & Wilbert, 1981]
Thigmophryidae Chatton & Lwoff, 1926
- Cochliodomus Raabe, 1971
- Cochliophilus Kozloff, 1945
- Conchophyllum Raabe, 1936
- Myxophyllum Raabe, 1934
- Thigmophrya Chatton & Lwoff, 1923
Thyrophylacidae Berger in Corliss, 1961
- Plagiopyliella Polijansky, 1951
- Thyrophylax Berger in Corliss, 1961 [Lynn & Berger, 1973]
Uronematidae Thompson, 1964
- Homalogastra Kahl, 1926
- Pseuduronema Hoare, 1927
- Urocyclon Small & Lynn, 1985 [Song & Wilbert, 2000]
- Uronema Dujardin, 1841
- Uronemopsis Kahl, 1931
- Uropedalium Kahl, 1928
Urozonidae Grolière, 1975
- Urozona Schewiakoff, 1889
Sedis mutabilis in Order Philasterida
- Kahlilembus Grolière & Couteaux, 1984 [Foissner, Berger & Kohmann, 1994]
Incertae sedis in Order Philasterida
- Andreula Kahl, 1934
- Bizonula Corliss, 1960
- Colpodopsis Gourret & Roeser, 1888 [syn. of Platynematum]
- Cryptostomina Fedele, 1938
- Eurychilum André, 1910
- Gullmarella Fenchel, 1964
- Lembadionella Kahl, 1933
- Ptyssostoma Hentschel, 1927
- Pusilloburius Corliss, 1979
- Rhinodisculus Mansfeld, 1923
- Sertumia Tucolesco, 1962
Order Pleuronematida Fauré-Fremiet in Corliss, 1956
Calyptotrichidae Small & Lynn, 1985
- Calyptotricha Phillips, 1882
Conchophthiridae Kahl in Doflein & Reichenow, 1929
- Conchopththirus Stien, 1861
- Conchoscutum Raabe, 1947
Ctedoctematidae Small & Lynn, 1985
- Compsosomella Small & Lynn, 1985
- Ctedoctema Stokes, 1884
- Hippocomos Czapik & Jordan, 1977
- Paractedectema Small & Lynn, 1985
Cyclidiidae Ehrenberg, 1838
- Abathostoma Berger in Corliss, 1979 [jun. obj. syn. of Echinocyclidium]
- Cristigera Roux, 1899
- Cyclidium O.F. Müller, 1786 [1773]
- Echinocyclidium Jankowski, 1980
- Isocyclidium Esteban, Embley & Finlay, 1993
- Mesogymnus Berger in Corliss, 1979 [Berger, 1994]
- Paracyclidium Grolière, de Puytorac & Grain, 1980
- Paurotricha Dragesco & Dragesco-Kernéis, 1991 [syn. of Cristigera]
- Pseudocyclidium Small & Lynn, 1985
Dragescoidae Jankowski in Small & Lynn, 1985
- Dragescoa Jankowski, 1974
Histiobalantiidae de Pytorac & Corliss in Corliss, 1979
- Histiobalantium Stokes, 1886
Peniculistomatidae Fenchel, 1965
- Echinosociella Berger in Small & Lynn, 1985
- Mytilophilus Antipa & Dolan, 1985
- Peniculistoma Jankowski, 1964
Pleuronematidae Kent, 1881
- Pleurocoptes Wallengren, 1896
- Pleuronema Dujardin, 1836 [1841]
- Schizocalyptra Dragesco, 1968
Thigmocomidae Kazubski, 1958
- Thigmocoma Kazubski, 1958
Incertae sedis in Suborder Pleuronematina
- Larvulina Penard, 1922
Order Thigmotrichida Chatton & Lwoff, 1922
Ancistridae Issel, 1903
- Ancistrella Cheissin, 1930 [1931; nomen nudum]
- Ancistrum Maupas, 1883
- Ancistrumina Raabe, 1959
- Eupoterion MacLennan & Connell, 1931 [syn. of Ancistrum]
- Fenchelia Raabe, 1970
- Protophyra Kofoid, 1903
- Protophyropsis Raabe, 1959
- Semiboveria Raabe, 1970
- Syncilancistrumina Knight & Thorne, 1982
Hemispeiridae König, 1894
- Ancistrospira Chatton & Lwoff, 1926
- Boveria Stevens, 1901
- Cheissinia Chatton & Lwoff, 1949
- Hemispeira Fabre-Domergue, 1888
- Plagiospira Issel, 1903
- Proboveria Chatton & Lwoff, 1936
- Protospira Raabe, 1968 [Protospirella Aescht, 2001]
Hysterocinetidae Diesin, 1866
- Coelothigma de Puytorac, 1968 [1969]
- Cotylothigma Raabe, 1949
- Craticuloscuta Kozloff, 1965
- Drilocineta Raabe, 1972
- Elliptothigma Meier, 1954
- Eminothigma Jankowski in Corliss, 1979
- Epicharocotyle Kozloff, 1965
- Hysterocineta Diesing, 1866
- Kozloffia de Puytorac, 1968
- Kysthothigma Raabe, 1949
- Preptychostomum de Puytorac, 1968 [1969]
- Protoptychostomum Raabe, 1949
- Ptychostomum Stein, 1860
- Raabellocineta de Puytorac, Grolière & Grain, 1979
- Taeniocineta Raabe, 1972
- Thurstonia de Puytorac, 1968 [1969]
Paraptychostomidae Ngassam, de Puytorac & Grain, 1994
- Paraptychostomum Ngassam, de Puytorac & Grain, 1994
Protanoplophryidae Miyashita, 1929
- Protanoplophrya Miyashita, 1929
Incertae sedis in Subclass Scuticociliatia
- Agigea Lepsi, 1965 [nomen nudum]
Schizocaryidae Jankowski, 1979
- Schizocaryum Poljansky & Golikova, 1957
Subclass Hymenostomatia Delage & Hérouard, 1896
Order Hymenostomatida Delage & Hérouard, 1896
Suborder Tetrahymenina Fauré-Fremiet in Corliss, 1956
Curimostomatidae Jankowski, 1968
- Curimostoma Kozloff, 1954
- Dogielella Poljansky, 1925
Glaucomidae Corliss, 1971
- Bursostoma Vörösváry, 1950
- Chasmatostoma Engelmann, 1862 [syn. of Colpoda]
- Dichilum Schewiakoff, 1889 [1893]
- Epenardia Corliss, 1971
- Espejoia Bürger, 1908
- Glaucoma Ehrenberg, 1830
- Glaucomella Grolière, 1977
- Jaocorlissia Small & Lynn, 1985
- Monochilum Schewiakoff, 1893
- Physalophrya Kahl, 1931Incertae sedis in Family Glaucomidae
- Dexiotrichides Kahl, 1951 [1931]
- Discozoon Vuxanovici, 1960
- Pinchatia Shibuya, 1931
- Pleurochilidium Stein, 1860
Spirozonidae Kahl, 1926
- Spirozona Kahl, 1926
- Stegochilum Schewiakoff, 1893
Trichospiridae Kahl, 1926
- Trichospira Roux, 1899
Tetrahymenidae Corliss, 1952
- Deltopylum Fauré-Fremiet & Mugard, 1946
- Lambornella Keilin, 1921
- Tetrahymena Furgason, 1940 [Lwoff, 1947?]
Turaniellidae Didier, 1971
- Colpidium Stein, 1860
- Dexiostoma Jankowski, 1967
- Turaniella Corliss, 1960
Suborder Ophryoglenina Canella, 1964
Ichthyophthiriidae Kent, 1881
- Ichthyophthirioides Roque & de Puytorac, 1966 [syn. of Ichthyophthirius]
- Ichthyophthirius Fouquet, 1876
Ophryoglenidae Kent, 1881
- Ophryoglena Ehrenberg, 1831
- Protophryoglena Mugard, 1949 [syn. of Ophryoglena]Incertae sedis in Order Hymenostomatida
- Blepharostoma Schewiakoff, 1893 [1892; nomen nudum]
Subclass Apostomatia Chatton & Lwoff, 1928
Order Apostomatida Chatton & Lwoff, 1928
Colliniidae Cépède, 1910
- Collinia Cépède, 1910
- Metacollinia Jankowski, 1980
Cyrtocaryidae Corliss, 1979
- Cyrtocaryum Fauré-Fremiet & Mugard, 1949
Incertae sedis in Family Cyrtocaryidae
- Spirobuetschliella Hovasse, 1950
Foettingeriidae Chatton, 1911
- Calospira Chatton & Lwoff, 1935
- Foettingeria Caullery & Mesnil, 1903
- Gymnodinioides Minkiewicz, 1912
- Hyalophysa Bradbury, 1966
- Hyalospira Miyashita, 1933 [syn. of Gymnodinioides]
- Metaphrya Ikeda, 1917
- Ophiuraespira Chatton & Lwoff, 1930
- Pericaryon Chatton, 1911
- Phoretophrya Chatton, A. & M. Lwoff, 1930
- Phtorophrya Chatton, A. & M. Lwoff, 1930
- Polyspira Minkiewicz, 1912
- Rosea de Puytorac in Corliss, 1979 [nomen nudum]
- Spirophrya Chatton & Lwoff, 1924
- Synophrya Chatton & Lwoff, 1926
- Terebrospira Debaisieux, 1960
- Traumatiophtora Chatton & Lwoff, 1930 [1931]
- Vampyrophrya Chatton & Lwoff, 1930 [1931]Incertae sedis in Family Foettingeriidae
- Jeppsia Corliss, 1960
- Kofoidella Cépède, 1910
- Perezella Cépède, 1910
Order Astomatophorida Jankowski, 1966
Opalinopsidae Hartog, 1906
- Chromidina Gonder, 1905
- Opalinopsis Foettinger, 1881
Order Pilisuctorida Jankowski, 1966
Conidophryidae Kirby, 1941
- Ascophrys Campillo & Deroux, 1974
- Askoella Fenchel, 1965
- Conidophrys Chatton & Lwoff, 1934
Subclass Peritrichia Stein, 1859
Order Sessilida Kahl, 1933
Astylozoidae Kahl, 1935
- Astylozoon Engelmann, 1862
- Hastatella Erlanger, 1890
Ellobiophryidae Chatton & Lwoff, 1923
- Caliperia Laird, 1953
- Clausophrya Naidenova & Zaika, 1969 [syn. of Ellobiophrya]
- Ellobiophrya Chatton & Lwoff, 1923
Epistylididae Kahl, 1933
- Apiosoma Blanchard, 1885
- Campanella Goldfuss, 1820
- Epistylis Ehrenberg, 1830
- Heteropolaria Foissner & Schubert, 1977
- Nidula Gajewskaja, 1933 [syn. of Epistylis]
- Opisthostyla Stokes, 1886 [syn. of Rhabdostyla]
- Rhabdostyla Kent, 1881Incertae sedis in Family Epistylididae
- Systylis Bresslau, 1919
Lagenophryidae Bütschli, 1889
- Circolagenophrys Jankowski, 1980 [syn. of Lagenophrys]
- Clistolagenophrys Clamp, 1991
- Lagenophrys Stein, 1851 [1852]
- Operculigera Kane, 1969
- Paralagenophrys Clamp, 1987
- Setonophrys Jankowski, 1986
- Stylohedra Kellicott, 1884 [syn. of Lagenophrys]Incertae sedis in Family Lagenophryidae
- Eilymophrys Corliss, 1979
Operculariidae Fauré-Fremiet in Corliss, 1979
- Ampullaster Jankowski, 1976 [not available]
- Ballodora Dogiel & Furssenko, 1921 [nomen dubium]
- Bezedniella Stloukal & Matis, 1994
- Opercularia Goldfuss, 1820
- Operculariella Stammer, 1948
- Orbopercularia Lust, 1950 [Guhl, 1979]
- Propyxidium Corliss, 1979Incertae sedis in Family Operculariidae
- Orsomia Baer, 1952
Ophrydiidae Ehrenberg, 1838
- Gerda Claparède & Lachmann, 1858
- Ophrydium Bory de St. Vincent, 1826 [1824]
Opisthonectidae Foissner, 1976
- Opisthonecta Fauré-Fremiet, 1906
- Telotrochidium Kent, 1881
Rovinjellidae Mathes, 1972
- Rovinjella Matthes, 1972
Scyphidiidae Kahl, 1933
- Ambiphrya Raabe, 1952
- Gonzeella Kufferath, 1953
- Ophrydiopsis Penard, 1922 [syn. of Scyphidiella]
- Paravorticella Kahl, 1933
- Scyphidia Dujardin, 1841Incertae sedis in Family Scyphidiidae
- Pachystomos Rudzinska, 1952
Termitophryidae Lom in Corliss, 1979
- Termitophrya Noirot & Noirot-Timothée, 1959
Usconophryidae Clamp, 1991
- Usconophrys Jankowski, 1985
Vaginicolidae de Fromentel, 1874
- Caulicola Stokes, 1894 [syn. of Pyxicola]
- Cothurnia Ehrenberg, 1831
- Cothurniopsis Entz, Sr., 1884 [Stokes, 1893]
- Pachytrocha Kent, 1882 [syn. of Cothurnia]
- Platycola Kent, 1882
- Pseudothuricola Kahl, 1935
- Pyxicola Kent, 1882
- Thuricola Kent, 1881
- Vaginicola Lamarck, 1816 [Ehrenberg, 1838]Incertae sedis in Family Vaginicolidae
- Cyclodonta Matthes, 1958
Vorticellidae Ehrenberg, 1838
- Carchesium Ehrenberg, 1830 [1831]
- Entziella Stiller, 1951
- Haplocaulus Precht, 1935 [Warren, 1988]
- Intranstylum Fauré-Fremiet, 1904
- Myoschiston Precht, 1935 [Jankowski, 1985]
- Parazoothamnium Piesik, 1975
- Planeticovorticella Clamp & Coats, 2000
- Pseudocarchesium Sommer, 1951 [nomen nudum]
- Pseudovorticella Foissner & Schiffmann, 1975
- Rugaecaulis Lom in Corliss, 1979 [Lom & de Puytorac, 1994]
- Ruthiella Schödel, 1983
- Tucolesca Lom in Corliss, 1979
- Vorticella Linnaeus, 1767Incertae sedis in Family Vorticellidae
- Monintranstylum Banina, 1976 [Jankowski, 1993]
Zoothamniidae Sommer, 1951
- Craspedomyoschiston Precht, 1935
- Zoothamniun Bory de St. Vincent, 1826
Order Mobilida Kahl, 1933
Leiotrochidae Johnston, 1938
- Leiotrocha Fabre-Domergue, 1888 [syn. of Cyclochaeta]
Polycyclidae Poljansky, 1951
- Polycycla Polijansky, 1951
Trichodinidae Claus, 1874
- Dipartiella G. Stein, 1961
- Hemitrichodina Basson & Van As, 1989
- Pallitrichodina Van As & Basson, 1993 [V A & B in Aescht, 2001]
- Paratrichodina Lom, 1963
- Semitrichodina Kazubski, 1958
- Trichodina Ehrenbeg, 1830
- Trichodinella Sràmek-Husek, 1953
- Tripartiella Lom, 1959 [Raabe, 1963; syn. of Semitrichodina]
- Vauchomia Mueller, 1938Incertae sedis in Family Trichodinidae
- Acyclochaeta Zick, 1928 [syn. of Trichodina]
Trichodinopsidae Kent, 1881
- Trichodinopsis Claparède & Lachmann,1858 [syn. of Urceolaria]
Urceolariidae Dujardin, 1840
- Urceolaria Stein, 1854 [1867]
Subclass Astomatia Schewiakoff, 1896
Order Astomatida Schewiakoff, 1896
Anoplophryidae Cépède, 1910
- Almophrya de Puytorac & Dragesco, 1969
- Anoplophyra Stein, 1860
- Corlissiella de Puytorac, 1960
- Herpetophrya Siedlecki, 1902
- Lomiella de Puytorac, 1961 [de Puytorac & Rakotoarivelo, 1965; nomen nudum]
- Lubetiella de Puytorac, 1959 [nomen nudum]
- Metastomum Georgévitch, 1941
- Njinella Ngassam, 1983
- Paranoplophrya Rohrbach, 1936
- Perseia Rossolimo, 1926
- Prototravassosia Artigas & Unti, 1938
- Sigmophrya de Puytorac, 1971
Buetschliellidae de Puytorac in Corliss, 1979
- Anoplophryopsis de Puytorac, 1954
- Buetschliella Awerinzew, 1908
- Herpinella de Puytorac, 1954
- Rhizocaryum Caullery & Mesnil, 1907
Clausilocolidae de Puytorac in Corliss, 1979
- Clausilocola Lom, 1959
- Haptophryopsis de Puytorac, 1971
- Proclausilocola Lom, 1959
Contophryidaae de Puytorac, 1972
- Contophyra de Puytorac & Dragesco, 1968 [1969]
- Dicontophrya de Puytorac & Dragesco, 1968 [1969]
Haptophryidae Cépède, 1910
- Annelophrya Lom, 1959
- Cepedietta Kay, 1942
- Haptophrya Stein, 1867
- Lachmannella Cépède, 1910
- Steinella Cépède, 1910
Hoplitophryidae Cheissein, 1930
- Akidodes Lom, 1959 [Lom in Aescht, 2001]
- Anglasia Delphy, 1938 [1936]
- Buetschliellopsis de Puytorac, 1954
- Delphyella de Puytorac, 1969
- Hoplitophrya Stein, 1859 [1860]
- Jirovecella Lom, 1957
- Juxtamesnilella de Puytorac, 1954 [1969]
- Juxtaradiophrya de Puytorac, 1954 [1957]
- Mesnilella Cépède, 1910
- Mixtophrya de Puytorac, 1969
- Protoradiophryopsis Georgévitch, 1950
- Radiophryoides Lom, 1956
Intoshellinidae Cépède, 1910
- Intoshellina Cépède, 1910
- Monodontophrya Vejdovsky, 1892
Maupasellidae Cépède, 1910
- Acanthophrya Heidenreich, 1935
- Buchneriella Heidenreich, 1935
- Georgevitchiella de Puytorac, 1957
- Maupasella Cépède, 1910
Radiophryidae de Puytorac, 1972
- Acanthodiophrya de Puytorac & Dragesco, 1968 [1969]
- Anthonyella Delphy, 1936
- Cheissiniophrya de Puytorac & Dragesco, 1969 [misspelled in Corliss, 1979?]
- Coelophrya de Puytorac & Dragesco, 1968 [1969]
- Desmophrya Raabe, 1933
- Dicoelophrya de Puytorac & Dragesco, 1968 [1969]
- Durchoniella de Puytorac, 1954
- Eudrilophrya de Puytorac, 1971 [1969, 1970?]
- Helella Kaczanowski, 1961 [Helellophrya Aescht, 2001]
- Hovasseiella de Puytorac, 1955
- Metaracoelophrya de Puytorac & Dragesco, 1969
- Metaradiophrya Heidenreich, 1935 [nomen nudum]
- Mimophrya de Puytorac, 1969
- Mrazekiella Kijenskij, 1925 [1926]
- Ochridanus Georgévitch, 1941
- Paracoelophrya de Puytorac, 1969 [nomen nudum]
- Radiophrya Rossolimo, 1926
- Radiophryopsis Georgévitch, 1941Sedis mutabilis in Class OLIGOHYMENOPHOREA
Azeridae Alekperov, 1985
- Azerella Alekperov, 1985
Nucleocorbulidae Santhakumari & Nair, 1970
- Nucleocorbula Santhakumari & Nair, 1970
Incertae sedis in Phylum Ciliophora
- Arachnidiopsis Penard, 1918 [nomen dubium]
- Euploia Lohmann, 1920 [nomen dubium]
- Isosticha Kiesselbach, 1936 [not mentioned in Aescht]
- Orcavia Tucolesco, 1962
- Sigalasia Delphy, 1938 [nomen dubium]
Coelosomidiidae Corliss, 1961
- Coelosomides Strand, 1928
- Conchostoma Fauré-Fremiet, 1963Incertae sedis in Family Coelosomidiidae
- Epimecophrya Kahl, 1933
- Paraspathidium Noland, 1937
Sulcigeridae Gajewskaja, 1933 [1928]
- Sulcigera Gajewskaja, 1933 [1928]