Species (15.149)
- Calpionellopsis crassoblonga Nagy 1986
- Calpionellopsis parvoblonga Nagy 1986
- Calpionellopsis oblosimplex Nagy 1986
- Calpionellopsis procerosimplex Nagy 1986
- Calpionellopsites conicus Nagy 1986
- Calyptotricha chlorelligera Lepsi 1957
- Calpionellopsis protoblonga Nagy 1986
- Calyptotricha lanuginosa Penard 1922
- Calyptotricha pleuronemoides Phillips 1882
- Campanella tincta Stokes 1887
- Apiosoma campanulatum Timofeev 1962
- Campylopus paradoxus Claparède & Lachmann 1858
- Canthariella brevis Kofoid & Campbell 1929
- Canthariella pyramidata Jörgensen 1924
- Capriniana sp. Strand 1928
- Canthariella septinaria Kofoid & Campbell 1929
- Canthariella truncata Kofoid & Campbell 1929
- Carchesium aselli Engelmann 1862
- Carchesium limeticum
- Carchesium marginatum Dumas 1930
- Carchesium longipes Dumas 1930
- Carchesium palnigeniae Dumas 1930
- Carchesium pictum Ehrenberg 1831
- Carchesium pectinatum Zacharias 1897
- Carchesium pygmaeum Ehrenberg 1838
- Carchesium polypinum Linnaeus 1758
- Carchesium pygmeum Udekem 1864
- Carchesium septatum Forrest in Kent 1881
- Carchesium spectabile Ehrenberg ?
- Cardiostoma vermiforme Kahl 1928
- Cardiostomatella vermiforme Kahl 1928
- Carinoposthium caudatum Cunha ()
- Caspionella bergeri Agamaliev ()
- Catharina florea Kormos J. & Kormos K. 1958
- Caulicola valvata Stokes 1894
- Caulicola pyxidiformis D'Udekem 1862
- Cavichona abyssalis Jankowski 1973
- Cavichona acanthogammari Jankowski 1973
- Cavichona brevistyla Jankowski 1973
- Cavichona crassa Jankowski 1973
- Cavichona cincinnata Jankowski 1973
- Cavichona exilis Jankowski 1973
- Cavichona elegans Swarczewsky 1928
- Cavichona elegantula Swarczewsky 1928
- Cavichona laticollis Jankowski 1973
- Cavichona multifida Jankowski 1973
- Cavichona oligocineta Jankowski 1973
- Cavichona rhabdomorpha Jankowski 1973
- Cavichona tenue Jankowski 1973
- Cavichona protecta Jankowski 1973
- Cavichona virgata Jankowski 1973
- Centrophorella fasciolata Kahl 1933
- Centrophorella faurei Dragesco 1954
- Ceratidium cunetum Ehrenberg 1830
- Chaetospira remex Hudson 1875
- Chaetospira muelleri Lachmann 1856
- Chaetospira entzi Kahl 1932
- Chaetospira vaginicola Dumas 1929
- Charon ventriculi Jameson 1925
- Charonina equi -> LB0002: 100
- Charonina nuda -> LB0002: 100
- Charonina ventriculi Strand 1928
- Charonnautes equi Hsiung 1930
- Chasmatostoma reniforme Engelmann 1862
- Chattonia lenticularis Debaisieux 1957
- Chattonidium setense Villeneuve-Brachon 1937
- Chattonella calani Jepps 1937
- Cheissinella enchytrei Meier 1954
- Cheissinia baicalensis Cheissin 1931
- Chilodon caudatus Stokes 1885
- Bütschlia neglecta Schuberg 1888
- Bütschliella minima Heidenreich 1935
- Bütschliella subaculeata Georgevitch 1941
- Caenomorpha capucina Kahl 1932
- Caenomorpha levanderi Kahl 1927
- Caenomorpha medusula Perty 1852
- Caenomorpha parva Wetzel 1928
- Caenomorpha simplex Jankowski 1964
- Caenomorpha sapropelica Kahl 1927
- Caenomorpha sp.
- Caenomorpha steini Bütschli 1879
- Caenomorphina heinrici Blochmann ?
- Caenomorpha uniserialis Levander 1894
- Calcaria contorta Gruber 1880
- Caliperia longipes Laird 1953
- Calceolus cypripedium Clark 1866
- Caloscolex camelinus Dogiel 1926
- Calospira minkiewiczi Chatton & Lwoff 1935
- Calpionella elliptalpina Nagy 1986
- Calpionella alpelliptica Nagy 1986
- Calpionella brevelliptica Nagy 1986
- Calpionella globalpina Nagy 1986
- Calpionella grandalpina Nagy 1986
- Calpionella latalpina Nagy 1986
- Calpionella longalpina Nagy 1986
- Calpionellopsis acuticonoblonga Nagy 1986
- Calpionella parvalpina Nagy 1986
- Campanella umbellaria Linnaeus 1758
- Carchesium bipartitum Dumas 1930
- Carchesium brevistylum Stiller 1931