• Abrochtha carnivora Ricci, Melone & Walsh, 2001: microbenthos
• Abrochtha intermedia (Beauchamp, 1909): microbenthos
• Abrochtha kingi Birky, Ricci, Melone & Fontaneto, 2011: microbenthos
• Abrochtha meselsoni Birky, Ricci, Melone & Fontaneto, 2011: microbenthos
• Abrochtha sonneborni Birky, Ricci, Melone & Fontaneto, 2011: microbenthos
• Acarochelopodia aduncispina Bartsch, 1977: microbenthos
• Acarochelopodia biunguis Bartsch, 1988: microbenthos
• Acarochelopodia caissara Pepato, Tiago & Rocha, 2011: microbenthos
• Acarochelopodia delamarei Angelier, 1954: microbenthos
• Acarochelopodia lapidaria Bartsch, 1991: microbenthos
• Acarochelopodia saruanlensis Morselli & Mari, 1986: microbenthos
• Acarochelopodia tarentina Morselli, Mari & Sarto, 1998: microbenthos
• Acineta tuberosa Ehrenberg, 1833: microbenthos
• Actacarus arabius Bartsch, 2004: microbenthos
• Actacarus australis Bartsch, 1993: microbenthos
• Actacarus clipeolatus Morselli & Mari, 1986: microbenthos
• Actacarus hastatus Bartsch, 1977: microbenthos
• Actacarus karoensis Abé, 1990: microbenthos
• Actacarus minor Bartsch, 1996: microbenthos
• Actacarus ponticus Bartsch, 1999: microbenthos
• Actacarus pygmaeus Schulz, 1937: microbenthos
• Actacarus spinosus Otto, 2000: microbenthos
• Adenoides eludens (Herdman) Balech, 1956: microbenthos
• Adineta acuticornis Haigh, 1967: microbenthos
• Adineta barbata Janson, 1893: microbenthos
• Adineta bartosi Wulfert, 1960: microbenthos
• Adineta beysunae Örstan, 2018: microbenthos
• Adineta coatsi Iakovenko, Smykla, Convey, Kasparona, Kozeretska, Trokhymets, Dykyy, Plewka, Devetter & Janko, 2015: microbenthos
• Adineta cuneata Milne, 1916: microbenthos
• Adineta editae Iakovenko, 2015: microbenthos
• Adineta elongata Rodewald, 1935: microbenthos
• Adineta emsliei Iakovenko, Smykla, Convey, Kasparona, Kozeretska, Trokhymets, Dykyy, Plewka, Devetter & Janko, 2015: microbenthos
• Adineta fontanetoi Iakovenko, Smykla, Convey, Kasparona, Kozeretska, Trokhymets, Dykyy, Plewka, Devetter & Janko, 2015: microbenthos
• Adineta glauca Wulfert, 1942: microbenthos
• Adineta gracilis Janson, 1893: microbenthos
• Adineta grandis Murray, 1910: microbenthos
• Adineta longicornis Murray, 1906: microbenthos
• Adineta oculata (Milne, 1886): microbenthos
• Adineta rhomboidea Bērziņš, 1950: microbenthos
• Adineta ricciae Segers & Shiel, 2005: microbenthos
• Adineta steineri Bartoš, 1951: microbenthos
• Adineta tuberculosa Janson, 1893: microbenthos
• Adineta vaga (Davis, 1873): microbenthos
• Albertia crystallina Schultze, 1851: microbenthos
• Albertia naidis Bousfield, 1886: microbenthos
• Albertia ovagranulata Valovaya, 1990: microbenthos
• Albertia reicheltae Koste, 1970: microbenthos
• Albertia typhlina Harring & Myers, 1928: microbenthos
• Albertia vermiculus Dujardin, 1838: microbenthos
• Albertia woronkowi Zenkewitsch, 1922: microbenthos
• Allodicranophorus bulgaricus (Althaus, 1957): microbenthos
• Amphidiniella sedentaria Horiguchi, 1995: microbenthos
• Amphidiniopsis aculeata Hoppenrath, Koeman & B.S.Leander, 2009: microbenthos
• Amphidiniopsis arenaria Hoppenrath, 2001: microbenthos
• Amphidiniopsis cristata Hoppenrath, 2000: microbenthos
• Amphidiniopsis dentata Hoppenrath, 2001: microbenthos
• Amphidiniopsis dragescoi (Balech) Hoppenrath, Selina, Yamaguchi & Leander, 2012: microbenthos
• Amphidiniopsis galericulata Hoppenrath, 2000: microbenthos
• Amphidiniopsis hexagona S.A.Yoshimatsu, S.Toriumi & J.D.Dodge, 2000: microbenthos
• Amphidiniopsis hirsuta (Balech) J.D.Dodge, 1982: microbenthos
• Amphidiniopsis kofoidii Wołoszyńska, 1929: microbenthos
• Amphidiniopsis konovalovae Selina & Hoppenrath, 2013: microbenthos
• Amphidiniopsis korewalensis S.Murray & D.J.Patterson, 2002: microbenthos
• Amphidiniopsis pectinaria Toriumi, Yoshimatsu & J.D.Dodge, 2002: microbenthos
• Amphidiniopsis rotundata Hoppenrath & Selina, 2012: microbenthos
• Amphidiniopsis striata Selina & Hoppenrath, 2013: microbenthos
• Amphidiniopsis swedmarkii (Balech) J.D.Dodge, 1982: microbenthos
• Amphidiniopsis urniformis G.I.Gail, 1950: microbenthos
• Amphidiniopsis uroensis Toriumi, Yoshimatsu & J.D.Dodge, 2002: microbenthos
• Amphidiniopsis yoshimatsui Hoppenrath, 2014: microbenthos
• Amphidinium bipes Herdman, 1924: microbenthos
• Amphidinium carterae Hulburt, 1957: microbenthos
• Amphidinium corpulentum Kofoid & Swezy, 1921: microbenthos
• Amphidinium cupulatisquama M.Tamura & T.Horiguchi, 2009: microbenthos
• Amphidinium gibbosum (L.Maranda & Y.Shimizu) Flø Jørgensen & Shauna Murray, 2004: microbenthos
• Amphidinium herdmanii Kofoid & Swezy, 1921: microbenthos
• Amphidinium incoloratum P.H.Campbell, 1973: microbenthos
• Amphidinium mammillatum Conrad & Kufferath, 1954: microbenthos
• Amphidinium massartii Biecheler, 1952: microbenthos
• Amphidinium mootonorum Shauna Murray & D.J.Patterson, 2002: microbenthos
• Amphidinium operculatum Claparède & Lachmann, 1859: microbenthos
• Amphidinium ovum E.C.Herdman, 1924: microbenthos
• Amphidinium psittacus Larsen, 1985: microbenthos
• Amphidinium salinum Ruinen, 1938: microbenthos
• Amphidinium scissum Koifoid & Swezy, 1921: microbenthos
• Amphidinium steinii (Lemmermann) Kofoid & Swezy, 1921: microbenthos
• Amphidinium trulla Shauna Murray, Rhodes & Flø Jørgensen, 2004: microbenthos
• Amphidinium yuroogurrum Shauna Murray & D.J.Patterson, 2002: microbenthos
• Ancistrocoma pelseneeri Chatton & Lwoff, 1926: microbenthos
• Ankistrodinium semilunatum (Herdman) Hoppenrath, Shauna Murray, Sparmann & Leander, 2012: microbenthos
• Anomopus chasmagnathi Mane-Garzon & Montero, 1973: microbenthos
• Anomopus telphusae Piovanelli, 1903: microbenthos
• Apicoporus glaber (M.Hoppenrath & Okolodkov) S.F.Sparmann, B.S.Leander & M.Hoppenrath, 2008: microbenthos
• Aspelta alastor Harring & Myers, 1928: microbenthos
• Aspelta angusta Harring & Myers, 1928: microbenthos
• Aspelta aper (Harring, 1913): microbenthos
• Aspelta beltista Harring & Myers, 1928: microbenthos
• Aspelta bidentata Wulfert, 1961: microbenthos
• Aspelta chorista Myers, 1942: microbenthos
• Aspelta circinator (Gosse, 1886): microbenthos