Species (22.489)
- Acinetoides greeffii Plate 1888
- Acinetopsis rara Robin 1879
- Albatrossiella minutissima Meunier 1910
- Albatrossiella filigera Laackmann 1909
- Allantosoma biserale Strelkow 1939
- Allantosoma cucumis Strelkow 1939
- Allantosoma brevicorniger Hsiung 1928
- Allantosoma dicorniger Hsiung 1928
- Allantosoma intestinalis Gassovsky 1918
- Allantosoma lineare Strelkow 1939
- Alloiozona triozona Hsiung 1930
- Allantoxena biseriale Strelkow 1939
- Allomeron helicostylum Vavra 1962
- Allosphaerium convexa Kidder & Summers 1935
- Allotricha mollis Sterki 1878
- Almophrya almae Puytorac & Dragesco 1969
- Actinorhabdos trichocystiferra Foissner 1984
- Actinotricha saltans Cohn 1866
- Acineta stagnalis
- Acineta sulcata
- Acanthostomella elongata Kofoid & Campbell 1929
- Acanthostomella coicoides Kofoid & Campbell 1929
- Acanthostomella minutissima Kofoid & Campbell 1929
- Acanthostomella norvegica Daday 1887
- Acanthostomella gracilis Brandt 1896
- Acanthostomella lata Kofoid & Campbell 1929
- Acanthostomella obtusa Kofoid & Campbell 1929
- Acarella siro Cohn 1866
- Acaryophrya sphaerica Gelei 1934
- Acaryophrya collaris Kahl 1926
- Acaryophrya helenae André 1915
- Acineta biligula Dumas 1937
- Acineta caliculicola Dumas 1937
- Acineta bocqueti Guilcher 1950
- Acineta commensalis Swarczewsky 1928
- Acineta conuta Swarczewsky 1928
- Acineta compressa Claparède & Lachmann 1859
- Acineta cordiformis Swarczewsky 1928
- Acineta corrugata Stokes 1894
- Acineta cothurnia Claparède & Lachmann 1859
- Acineta cothurnata Weisse 1847
- Acineta cucullus Claparède & Lachmann 1859
- Acineta crypturopi Swarczewsky 1928
- Acineta cylindrica Perty 1852
- Amphorella brandti Jörgensen 1924
- Amphorella ganymedes Entz 1884
- Amphorella calida Kofoid & Campbell 1929
- Amphorella inquilinus Entz
- Amphorella obliqua Claparède & Lachmann 1858
- Amphorella quadrilineata Claparède & Lachmann 1858
- Amphorella steenstrupii Claparède & Lachmann 1858
- Amphorella striata Daday 1887
- Amphorella subulata Ehrenberg 1833
- Amphorella tuberculata Daday 1887
- Amphorellopsis acantharus Kofoid & Campbell 1929
- Amphorellina subacuta Colom 1948
- Amphorellopsis laevis Kofoid & Campbell 1929
- Amphorellopsis acuta Schmidt 1901
- Amphorellopsis quadrangula Kofoid & Campbell 1929
- Amphorellopsis tetragona Jörgensen 1924
- Amphorellopsis turbinella Kofoid & Campbell 1929
- Amphorellopsis tropica Kofoid & Campbell 1929
- Amphorides amphora Claparède & Lachmann 1858
- Amphorides sp. Strand 1928
- Amplectella ampla Kofoid & Campbell 1929
- Amplectella collaria Brandt 1907
- Amplectella insignis Brandt 1906
- Amplectella monocollaria Laackmann 1909
- Amplectella occidentalis Kofoid & Campbell 1929
- Amplectella praeacuta Kofoid & Campbell 1929
- Ancistrocoma pelseneeri Chatton & Lwoff 1926
- Ancistrospira veneris Chatton & Lwoff 1926
- Ancistrum abrarum Fenchel 1965
- Ancistrum caudatum Fenchel 1964
- Ancistrum crassum Fenchel 1965
- Ancistrum macomae C & L 1949
- Ancistrum isseli Kahl 1931
- Ancistrum modioli Raabe 1970
- Ancistrum mytili Quennerstedt 1867
- Ancistrum nuculae Fenchel 1965
- Ancistrum venerisgallinae Maupas 1883
- Ancistrum venerupis Fenchel 1965
- Ancistruma barbata Issel 1903
- Ancistruma cyclidioides Issel 1903
- Ancistruma dosinae
- Ancistruma compressa Issel 1903
- Ancistruma sp. Strand 1928
- Ancistruma purpurae
- Ancistruma mytili sensu Issel ?
- Ancistruma subtruncata Issel 1903
- Ancistruma scrobiculariae
- Ancistruma veneris Maupas 1883
- Ancistrumina bulgarica Raabe 1970
- Ancistrumina cylidioides Issel 1903
- Ancistrumina hydrobiae Raabe 1936
- Ancistrumina kofoidi Bush 1937
- Ancistrumina macomae Chatton & Lwoff 1949
- Ancistrumina nucellae Khan 1970
- Ancistrumina limnica Raabe 1947
- Ancistrumina ovata Cheissin 1930