Ancistrocoma Chatton & Lwoff, 1926 (basis of record)
Ancistrocoma myae (Kofoid & Bush, 1936) Chatton & Lwoff, 1950 (basis of record)
Ancistrocoma pelseneeri Chatton & Lwoff, 1926 (basis of record)
Ancistrocoma pholadis Chatton & Lwoff, 1926 (basis of record)
Ancistrocoma thorsoni Fenchel, 1965 (basis of record)
Ancistrocomidae Chatton & Lwoff, 1939 (basis of record)
Anisocomides Chatton & Lwoff, 1950 (basis of record)
Anisocomides zyrphaeae (Chatton & Lwoff, 1926) Chatton & Lwoff, 1950 (basis of record)
Colligocineta Kozloff, 1965 (basis of record)
Colligocineta affinis Kozloff, 1976 (basis of record)
Colligocineta finleyi Kozloff, 1976 (basis of record)
Colligocineta scolelepidis Kozloff, 1976 (basis of record)
Crateristoma Jankowski, 1967 (basis of record)
Crateristoma kindi Jankowski, 1967 (basis of record)
Crebricoma Kozloff, 1946 (basis of record)
Crebricoma carinata (Raabe, 1934) Kozloff, 1946 (basis of record)
Enchelys O.F. Müller, 1773 (basis of record)
Enigmocoma (basis of record)
Enigmocoma acinetarum (Collin, 1907) Jankowski, 1976 (basis of record)
Gargarius Chatton & Lwoff, 1934 (basis of record)
Gargarius gargarius Chatton & Lwoff, 1934 (basis of record)
Goniocoma Chatton & Lwoff, 1950 (basis of record)
Goniocoma macomae (Chatton & Lwoff, 1926) Chatton & Lwoff, 1950 (basis of record)
Harmocoma Yankovskij, 1980 (basis of record)
Harmocoma rostellum (Deroux, 1976) Jankowski, 1980 (basis of record)
Holocoma Chatton & Lwoff, 1950 (basis of record)
Holocoma primigenius Chatton & Lwoff, 1950 (basis of record)
Hypocoma Gruber, 1884 (basis of record)
Hypocoma acinetarum Collin, 1907 accepted as Enigmocoma acinetarum (Collin, 1907) Jankowski, 1976 (basis of record)
Hypocoma ascidiarum Collin, 1912 (basis of record)
Hypocoma parasitica Gruber, 1884 (basis of record)
Hypocomagalma Jarocki & Raabe, 1932 (basis of record)
Hypocomagalma dreissenae Jarocki & Raabe, 1932 (basis of record)
Hypocomatidium Jarocki & Raabe, 1932 (basis of record)
Hypocomatidium jarockii Chatton & Lwoff, 1950 (basis of record)
Hypocomella Chatton & Lwoff, 1924 (basis of record)
Hypocomella cardii (Chatton & Lwoff, 1922) Chatton & Lwoff, 1924 (basis of record)
Hypocomella krzysiki (Jarocki, 1934) Raabe, 1970 (basis of record)
Hypocomella raabei Chatton & Lwoff, 1950 (basis of record)
Hypocomella roscoffiensis Chatton & Lwoff, 1950 (basis of record)
Hypocomidae Bütschli, 1889 (basis of record)
Hypocomides Chatton & Lwoff, 1922 (basis of record)
Hypocomides astartae Fenchel, 1965 (basis of record)
Hypocomides elsinora Fenchel, 1965 (basis of record)
Hypocomides hiatellae Fenchel, 1965 (basis of record)
Hypocomides modiolariae Chatton & Lwoff, 1922 (basis of record)
Hypocomides musculus Fenchel, 1965 (basis of record)
Hypocomidium Raabe, 1938 (basis of record)
Hypocomidium fabius Raabe, 1938 (basis of record)
Hypocomidium granum Raabe, 1938 (basis of record)
Hypocomina Chatton & Lwoff, 1924 (basis of record)
Hypocomina patellarum (Lichtenstein, 1921) Chatton & Lwoff, 1924 (basis of record)
Isocomides Chatton & Lwoff, 1950 (basis of record)
Isocomides mytili (Chatton & Lwoff, 1922) Chatton & Lwoff, 1950 (basis of record)
Parachaenia Kofoid & Bush, 1936 (basis of record)
Parahypocoma Chatton & Lwoff, 1939 (basis of record)
Parahypocoma collini Chatton & Lwoff, 1939 (basis of record)
Pelecyophrya Chatton & Lwoff, 1922 (basis of record)
Pelecyophrya tapetis Chatton & Lwoff, 1922 (basis of record)
Raabella Chatton & Lwoff, 1950 (basis of record)
Raabella helensis Chatton & Lwoff, 1950 (basis of record)
Rhynchocoma Jankowski, 1975 (basis of record)
Rhynchocoma hyperparasitica (Chatton & Lwoff, 1939) Jankowski (basis of record)
Rhynchophrya Collin, 1909 (basis of record)
Sphenophrya Chatton & Lwoff, 1921 (basis of record)
Sphenophrya cardii Chatton & Lwoff, 1950 (basis of record)
Sphenophrya dosiniae Chatton & Lwoff, 1921 (basis of record)
Sphenophrya myae Mjassnikowa, 1930 (basis of record)
Sphenophryidae Chatton & Lwoff, 1921 (basis of record)
Stegotricha Bower & Meyer, 1993 (basis of record)
Stegotricha enterikos Bower & Meyer, 1993 (basis of record)
Syringopharynx Collin, 1915 (basis of record)
Syringopharynx pterotrachaeae Collin, 1914 (basis of record)