Amphibdella Chatin, 1874 (basis of record)
Amphibdella paronaperugiae Llewellyn, 1960 (basis of record)
Amphibdelloides Price, 1937 (basis of record)
Amphibdelloides vallei Llewellyn, 1960 (basis of record)
Anthocotyle Van Beneden & Hesse, 1863 (basis of record)
Anthocotyle merluccii Van Beneden & Hesse, 1863 (basis of record)
Atrispinum Euzet & Maillard, 1974 (basis of record)
Atrispinum salpae (Parona & Perugia, 1890) Maillard & Noisy, 1979 (basis of record)
Axine Abildgaard, 1794 (basis of record)
Axine belones Abildgaard, 1794 (basis of record)
Axinidae Monticelli, 1903 (basis of record)
Benedenia Diesing, 1858 (basis of record)
Benedenia monticellii (Parona & Perugia, 1895) Johnston, 1929 (basis of record)
Bivagina Yamaguti, 1963 (basis of record)
Bivagina alcedinis (Parona & Perugia, 1889) Yamaguti, 1963 (basis of record)
Calceostomatidae Parona & Perugia, 1890 (basis of record)
Calceostomella Palombi, 1943 (basis of record)
Calceostomella inermis (Parona & Perugia, 1889) Palombi, 1943 (basis of record)
Calicotyle Diesing, 1850 (basis of record)
Calicotyle kroyeri Diesing, 1850 (basis of record)
Calicotyle palombi Euzet & Williams, 1960 (basis of record)
Calicotyle stossichi Braun, 1899 (basis of record)
Calicotyle vicina Neifar, Euzet & Ben Hassine, 2001 (basis of record)
Capsala Bosc, 1811 (basis of record)
Capsalidae Baird, 1853 (basis of record)
Cemocotyle Sproston, 1946 (basis of record)
Cemocotyle trachuri Dillon & Hargis, 1965 (basis of record)
Chimaericola Brinkmann, 1942 (basis of record)
Chimaericola leptogaster (Leuckart, 1830) Brinkmann, 1942 (basis of record)
Chimaericolidae Brinkmann, 1942 (basis of record)
Choricotyle Van Beneden & Hesse, 1863 (basis of record)
Choricotyle chrysophryi Van Beneden & Hesse, 1863 (basis of record)
Cotyloatlantica Bravo-Hollis, 1984 (basis of record)
Cotyloatlantica mediterranea (Euzet & Trilles, 1960) Bravo-Hollis, 1984 (basis of record)
Diclidophoridae Cerfontaine, 1895 (basis of record)
Dicrumenia Mamaev, 1969 (basis of record)
Dicrumenia bychowskyi Mamaev, 1969 (basis of record)
Dionchidae Bychowsky, 1959 (basis of record)
Dionchus Goto, 1899 (basis of record)
Dionchus agassizi Goto, 1899 (basis of record)
Dionchus remorae (MacCallum, 1916) Price, 1938 (basis of record)
Diplectanidae Monticelli, 1903 (basis of record)
Diplectanum Diesing, 1858 (basis of record)
Diplectanum [sensu lato] grassei Oliver, 1974 (basis of record)
Diplectanum [sensu lato] laubieri Lambert & Maillard, 1974 (basis of record)
Diplectanum [sensu lato] melvillei Oliver & Paperna, 1984 (basis of record)
Diplectanum aequans (Wagener, 1857) Diesing, 1858 (basis of record)
Diplectanum sciaenae Van Beneden & Hesse, 1863 (basis of record)
Diplectanum simile Bychowsky, 1957 (basis of record)
Discocotylidae Price, 1936 (basis of record)
Empruthotrema Johnston & Tiegs, 1922 (basis of record)
Empruthotrema raiae (MacCallum, 1916) Johnston & Tiegs, 1922 (basis of record)
Epicotyle Euzet & Maillard, 1974 (basis of record)
Epicotyle torpedinis (Price, 1942) Euzet & Maillard, 1974 (basis of record)
Erpocotyle Van Beneden & Hesse, 1863 (basis of record)
Erpocotyle catenulata (Guberlet, 1933) Yamaguti, 1963 (basis of record)
Gastrocotyle Beneden & Hesse, 1863 (basis of record)
Gastrocotyle trachuri Van Beneden & Hesse, 1863 (basis of record)
Gastrocotylidae Price, 1943 (basis of record)
Gotocotyla Ishii, 1936 (basis of record)
Gotocotyla acanthura (Parona & Perugia, 1896) Meserve, 1938 (basis of record)
Grubea Diesing, 1858 (basis of record)
Grubea cochlear Diesing, 1858 (basis of record)
Haliotrema Johnston & Tiegs, 1922 (basis of record)
Heliocotyle Neifar, Euzet & Ben Hassine, 1999 (basis of record)
Heliocotyle kartasi Neifar, Euzet & Ben Hassine, 1999 (basis of record)
Heteraxine Yamaguti, 1938 (basis of record)
Heteraxine heterocerca (Goto, 1894) Yamaguti, 1938 (basis of record)
Heteraxine seriola (Ishii, 1936) Yamaguti, 1938 accepted as Heteraxine heterocerca (Goto, 1894) Yamaguti, 1938 (basis of record)
Heterocotyle Scott, 1904 (basis of record)
Heterocotyle capapei Neifar, Euzet & Ben Hassine, 2000 (basis of record)
Heterocotyle forcifera Neifar, Euzet & Ben Hassine, 1999 (basis of record)
Heterocotyle mokhtarae Neifar, Euzet & Ben Hassine, 1999 (basis of record)
Heterocotyle pastinacae Scott, 1904 (basis of record)
Heterocotyle scotti Neifar, Euzet & Ben Hassine, 1998 (basis of record)
Heterocotyle similis Neifar, Euzet & Ben Hassine, 1998 (basis of record)
Heterocotyle striata Neifar, Euzet & Ben Hassine, 1999 (basis of record)
Heteronchocotyle Brooks, 1934 (basis of record)
Heteronchocotyle gymnurae Neifar, Euzet & Ben Hassine, 2001 (basis of record)
Hexabothriidae Price, 1942 (basis of record)
Hexabothrium von Nordmann, 1840 (basis of record)
Hexabothrium appendiculatum (Kuhn, 1829) von Nordmann, 1840 (basis of record)
Hexabothrium canicula (Cerfontaine, 1899) Price, 1942 (basis of record)
Hexostoma Rafinesque, 1815 (basis of record)
Hexostoma thynni (Delaroche, 1811) Rafinesque, 1815 (basis of record)
Hexostomatidae Price, 1936 (basis of record)
Kuhnia Sproston, 1945 (basis of record)
Kuhnia scombri (Kuhn, 1829) Sproston, 1945 (basis of record)
Lamellodiscus Johnston & Tiegs, 1922 (basis of record)
Lamellodiscus bidens Euzet, 1984 (basis of record)
Lamellodiscus elegans Bychowsky, 1957 (basis of record)
Lamellodiscus ergensi Euzet & Oliver, 1966 (basis of record)
Lamellodiscus erythrini Euzet & Oliver, 1966 (basis of record)
Lamellodiscus fraternus Bychowsky, 1957 (basis of record)
Lamellodiscus furcosus Euzet & Oliver, 1966 (basis of record)
Lamellodiscus gracilis Euzet & Oliver, 1966 (basis of record)
Lamellodiscus hilii Euzet, 1984 (basis of record)
Lamellodiscus ignoratus Palombi, 1943 (basis of record)
Lamellodiscus impervius Euzet, 1984 (basis of record)
Lamellodiscus knoepffleri Oliver, 1969 (basis of record)