Acanthodiophrya de Puytorac & Dragesco, 1968 (extant flag source)
Acanthodiophrya de Puytorac & Dragesco, 1968 (basis of record)
Acanthostomella Jörgensen, 1927 (extant flag source)
Acanthostomella Jörgensen, 1927 (basis of record)
Acineria Dujardin, 1841 (extant flag source)
Acineria Dujardin, 1841 (basis of record)
Acineta Ehrenberg, 1834 (basis of record)
Acineta Ehrenberg, 1834 (extant flag source)
Acinetopsis Robin, 1879 (extant flag source)
Acinetopsis Robin, 1879 (basis of record)
Acropisthium Perty, 1852 (basis of record)
Acropisthium Perty, 1852 (extant flag source)
Actinichona Yankovskii, 1973 (extant flag source)
Actinichona Yankovskii, 1973 (basis of record)
Actinobolina Strand, 1928 (extant flag source)
Actinobolina Strand, 1928 (basis of record)
Aegyriana Deroux, 1975 accepted as Aegyriana Song & Wilbert, 2002 (extant flag source)
Aegyriana Deroux, 1975 accepted as Aegyriana Song & Wilbert, 2002 (basis of record)
Allantosoma Gassovsky, 1919 (extant flag source)
Allantosoma Gassovsky, 1919 (basis of record)
Alloiozona Hsiung, 1930 (basis of record)
Alloiozona Hsiung, 1930 (extant flag source)
Almophrya de Puytorac & Dragesco, 1968 (basis of record)
Almophrya de Puytorac & Dragesco, 1968 (extant flag source)
Ambiphrya Raabe, 1952 (extant flag source)
Ambiphrya Raabe, 1952 (basis of record)
Amphileptus Ehrenberg, 1830 (extant flag source)
Amphileptus Ehrenberg, 1830 (basis of record)
Amphisiella Gourret & Roeser, 1888 (extant flag source)
Amphisiella Gourret & Roeser, 1888 (basis of record)
Amphisiellides Foissner, 1988 (basis of record)
Amphisiellides Foissner, 1988 (extant flag source)
Amphorellopsis Kofoid & Campbell, 1929 (basis of record)
Amphorellopsis Kofoid & Campbell, 1929 (extant flag source)
Amphorides Strand, 1928 (extant flag source)
Amphorides Strand, 1928 (basis of record)
Ampullaster Jankowski, 1976 (basis of record)
Ampullaster Jankowski, 1976 (extant flag source)
Ancistrocoma Chatton & Lwoff, 1926 (basis of record)
Ancistrocoma Chatton & Lwoff, 1926 (extant flag source)
Ancistrospira Chatton & Lwoff, 1926 (extant flag source)
Ancistrospira Chatton & Lwoff, 1926 (basis of record)
Ancistrum Maupas, 1883 (basis of record)
Ancistrum Maupas, 1883 (extant flag source)
Ancistrumina Raabe, 1959 (extant flag source)
Ancistrumina Raabe, 1959 (basis of record)
Ancystropodium Fauré-Fremiet, 1908 (basis of record)
Ancystropodium Fauré-Fremiet, 1908 (extant flag source)
Anigsteinia Isquith, 1968 (extant flag source)
Anigsteinia Isquith, 1968 (basis of record)
Anophryoides de Puytorac & Grolière, 1979 (basis of record)
Anophryoides de Puytorac & Grolière, 1979 (extant flag source)
Anoplophrya von Stein, 1860 (basis of record)
Anoplophrya von Stein, 1860 (extant flag source)
Anthonyella Delphy, 1936 (extant flag source)
Anthonyella Delphy, 1936 (basis of record)
Apiosoma Blanchard, 1885 (extant flag source)
Apiosoma Blanchard, 1885 (basis of record)
Apocryptopharynx Foissner, 1996 (extant flag source)
Apocryptopharynx Foissner, 1996 (basis of record)
Apsiktrata Foissner, Berger & Kohmann, 1994 (extant flag source)
Apsiktrata Foissner, Berger & Kohmann, 1994 (basis of record)
Arcuospathidium Foissner, 1984 (basis of record)
Arcuospathidium Foissner, 1984 (extant flag source)
Armichona Jankowski, 1973 (basis of record)
Armichona Jankowski, 1973 (extant flag source)
Ascampbelliella Corliss, 1960 (basis of record)
Ascampbelliella Corliss, 1960 (extant flag source)
Ascophrys Campillo & Deroux, 1974 (basis of record)
Ascophrys Campillo & Deroux, 1974 (extant flag source)
Askenasia Blochmann in Kirchner & Blochmann, 1895 (extant flag source)
Askenasia Blochmann in Kirchner & Blochmann, 1895 (basis of record)
Askoella Fenchel, 1965 (basis of record)
Askoella Fenchel, 1965 (extant flag source)
Aspidisca Ehrenberg, 1830 (extant flag source)
Aspidisca Ehrenberg, 1830 (basis of record)
Astylozoon Engelmann, 1862 (extant flag source)
Astylozoon Engelmann, 1862 (basis of record)
Atelepithites Deroux, 1976 (basis of record)
Atelepithites Deroux, 1976 (extant flag source)
Atopchilodon accepted as Atopochilodon Kahl, 1933 (extant flag source)
Atopchilodon accepted as Atopochilodon Kahl, 1933 (basis of record)
Atopochilodon Kahl, 1933 (basis of record)
Atopochilodon Kahl, 1933 (extant flag source)
Atopodinium Kahl, 1932 (basis of record)
Atopodinium Kahl, 1932 (extant flag source)
Atractos Vörösváry, 1950 (basis of record)
Atractos Vörösváry, 1950 (extant flag source)
Aurichona Jankowski, 1973 (basis of record)
Aurichona Jankowski, 1973 (extant flag source)
Australothrix Blatterer & Foissner, 1988 (basis of record)
Australothrix Blatterer & Foissner, 1988 (extant flag source)
Avelia Nouzarède, 1977 (basis of record)
Avelia Nouzarède, 1977 (extant flag source)
Bakuella Agamaliev & Alekperov, 1976 (basis of record)
Bakuella Agamaliev & Alekperov, 1976 (extant flag source)
Balanion Wulff, 1919 (basis of record)
Balanion Wulff, 1919 (extant flag source)
Balanonema Kahl, 1931 (extant flag source)
Balanonema Kahl, 1931 (basis of record)