Species (22.489)
- Enchelyodon armatus Kahl 1926
- Enchelyodon californicus Kahl 1935
- Enchelyodon camerounensis Dragesco 1965
- Enchelyodon cylindricus Dumas 1930
- Enchelyodon farctus Claparède & Lachmann 1859
- Enchelyodon elongatus Claparède & Lachmann 1859
- Enchelyodon fascincleatus Kahl 1933
- Enchelyodon fusidens Kahl 1930
- Enchelyodon lagenula Kahl 1930
- Enchelyodon laevis Quennerstedt 1867
- Enchelyodon longinucleatus Foissner 1984
- Enchelyodon lasius Stokes 1885
- Enchelyodon monilatus Kahl 1930
- Enchelyodon mucicola Kahl 1927
- Enchelyodon nodosus Berger, Foissner & Adam 1984
- Enchelyodon spathidiiformis Dragesco 1966
- Enchelyodon striatus Gourret & Roeser 1886
- Enchelyodon sulcatus Kahl 1930
- Enchelyodon terrenus Foissner 1984
- Enchelyodon tratzi Foissner 1987
- Enchelyodon trepidus Kahl 1928
- Enchelyodon trilineatus Penard 1922
- Enchelyodon vacuolatus Dragesco 1960
- Enchelyodon vorax Penard 1922
- Enchelyotricha binucleata Foissner 1987
- Enchelyomorpha vermicularis Smith 1899
- Enchelyodon vesiculosus Stokes 1894
- Enchelys agricola Horváth 1956
- Enchelys arcuata Claparède & Lachmann 1859
- Enchelys binucleata Foissner 1983
- Enchelys audoboni Smith 1897
- Enchelys cadaverinus Dumas 1930
- Enchelys curvilata Smith 1897
- Enchelys difflugiarum Penard 1922
- Enchelys pectinata Kahl 1930
- Enchelys multimicronucleata Alekperov 1993
- Enchelys mutans Mermod 1914
- Enchelys terricola Foissner 1987
- Enchelys teres Dujardin 1841
- Enchelys tarda Quennerstedt 1869
- Enchelys thecatum Kahl 1926
- Enchelys tokkuri Shibuya 1930
- Enchelys utriculus Fromentel 1876
- Enchelys vermicularis Smith 1899
- Enchelys vermiformis Foissner 1987
- Endodinium chattoni Hovasse 1922
- Endogyrinella ominosa Lust 1950
- Enchelys vestita Kahl 1927
- Endoralium loxodontae Eloff & Hoven 1980
- Engelmanniella mobilis Engelmann 1862
- Enigmostoma ougandae Jankowski 1975
- Enoploplastron confluens Dogiel 1925
- Enoploplastron triloricatum Dogiel 1925
- Favella meunieri Kofoid & Campbell 1929
- Favella panamensis Kofoid & Campbell 1929
- Favella serrata Möbius 1887
- Favelloides balearica Colom 1939
- Fenchelia crassa Fenchel 1965
- Ferodiscophrya cylindrica Perty 1852
- Bundleia benbrooki Strelkow 1939
- Filichona paradoxa Jankowski 1973
- Foissneria viridis Mirabdullayev 1986
- Foliella subtilis Lom 1959
- Folliculina abyssorum Giard 1883
- Folliculina aculeata Claparède & Lachmann 1858
- Folliculina ampulla Müller 1786
- Folliculina boecki Claparède & Lachmann 1858
- Folliculina elegans Claparède & Lachmann 1858
- Folliculina boltoni Kent 1881
- Folliculina gigantea Dons 1914
- Folliculina gunneri Dons 1927
- Folliculina limnoriae Giard 1883
- Folliculina hirundo Kent 1881
- Folliculina melitta Laackmann 1903
- Folliculina paranthurae Giard 1888
- Folliculina moebiusi Kahl 1932
- Folliculina producta Wright 1859
- Folliculina violacea Giard 1888
- Folliculinopsis annulata Faure-Fremiet 1936
- Folliculinopsis möbiusi Hadzi 1938
- Folliculinopsis producta Wright 1859
- Frontonia acuminata Ehrenberg 1833
- Frontonia aberrans Dragesco 1960
- Frontonia acuta Fromentel 1876
- Frontonia acutissima Dumas 1930
- Frontonia alba Fromentel 1876
- Frontonia angusta Kahl 1931
- Frontonia algivora Kahl 1931
- Frontonia arenaria Kahl 1933
- Frontonia atra Ehrenberg 1833
- Frontonia frigida Petz, Song & Wilbert 1995
- Frontonia fusca Quennerstedt 1869
- Frontonia fusiformis Foissner 1980
- Frontonia leucas Ehrenberg 1833
- Frontonia lacrimula Dumas 1930
- Frontonia longaria Dumas 1930
- Frontonia magnistoma Foissner 1987
- Frontonia marina Fabre-Domergue 1891
- Frontonia microstoma Kahl 1931
- Frontonia marisalbi Burkovsky 1970