Acanthocotyle Monticelli, 1888 (basis of record)
Acanthocotyle elegans Monticelli, 1890 (basis of record)
Acanthocotyle lobianchi Monticelli, 1888 (basis of record)
Acanthocotyle oligoterus Monticelli, 1899 accepted as Acanthocotyle lobianchi Monticelli, 1888 (basis of record)
Acanthocotylidae Monticelli, 1903 (basis of record)
Allencotyla Price, 1962 (basis of record)
Allencotyla mcintoshi Price, 1962 (basis of record)
Allodiclidophora Yamaguti, 1963 (basis of record)
Allodiclidophora squillarum (Parona & Perugia, 1889) Yamaguti, 1963 (basis of record)
Allopseudaxine Yamaguti, 1943 (basis of record)
Amphibdella Chatin, 1874 (basis of record)
Amphibdella flavolineata MacCallum, 1916 (basis of record)
Amphibdella paronaperugiae Llewellyn, 1960 (basis of record)
Amphibdella torpedinis Chatin, 1874 (basis of record)
Amphibdelloides Price, 1937 (basis of record)
Amphibdelloides maccallumi (Johnston & Tiegs, 1922) Price, 1937 (basis of record)
Amphibdelloides vallei Llewellyn, 1960 (basis of record)
Ancyrocephalus Creplin, 1839 (basis of record)
Ancyrocephalus paradoxus Creplin, 1839 (basis of record)
Ancyrocotyle Parona & Monticelli, 1903 (basis of record)
Ancyrocotyle vallei (Parona & Perugia, 1895) Parona & Monticelli, 1903 (basis of record)
Anoplodiscidae Tagliani, 1912 (basis of record)
Anoplodiscus Sonsino, 1890 (basis of record)
Anoplodiscus richiardii Sonsino, 1890 (basis of record)
Anthocotyle Van Beneden & Hesse, 1863 (basis of record)
Anthocotyle merluccii Van Beneden & Hesse, 1863 (basis of record)
Aspinatrium Yamaguti, 1963 (basis of record)
Aspinatrium gallieni Euzet & Ktari, 1971 accepted as Pseudoaspinatrium gallieni (Euzet & Ktari, 1971) Mamaev, 1986 (basis of record)
Aspinatrium spari (Yamaguti, 1937) Yamaguti, 1963 (basis of record)
Aspinatrium trachini (Parona & Perugia, 1889) Yamaguti, 1963 accepted as Bradyhaptorus trachini (Parona & Perugia, 1890) Unnithan, 1971 accepted as Pauciconfibula trachini (Parona & Perugia, 1889) Dilllon & Hargis, 1965 (basis of record)
Atriaster Lebedev & Parukhin, 1969 (basis of record)
Atriaster heterodus Lebedev & Parukhin, 1969 (basis of record)
Atriaster maillardi Lopez-Roman & De Armas Hernandez, 1989 (basis of record)
Atrispinum Euzet & Maillard, 1974 (basis of record)
Atrispinum acarne Maillard & Noisy, 1979 (basis of record)
Atrispinum mormyri (Lorenz, 1878) Orecchia & Paggi, 1983 accepted as Pagellicotyle mormyri (Lorenz, 1878) Mamev, 1984 accepted as Bychowskicotyla mormyri (Lorenz, 1878) Unnithan, 1971 (basis of record)
Atrispinum salpae (Parona & Perugia, 1890) Maillard & Noisy, 1979 (basis of record)
Atrispinum sargi (Parona & Perugia, 1890) Euzet & Maillard, 1974 (basis of record)
Atrispinum seminalis (Euzet & Maillard, 1973) (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 innobilitata Burnheim, Gomes & Varela, 1973 (basis of record)
Benedenia monticellii (Parona & Perugia, 1895) Johnston, 1929 (basis of record)
Benedenia pompatica Burnheim, Gomes & Varela, 1973 (basis of record)
Benedenia sciaenae (Van Beneden, 1852) Odhner, 1905 (basis of record)
Bivagina Yamaguti, 1963 (basis of record)
Bivagina alcedinis (Parona & Perugia, 1889) Yamaguti, 1963 (basis of record)
Bothitrema Price, 1936 (basis of record)
Bothitrema bothi (MacCallum, 1913) Price, 1936 (basis of record)
Bothitrematidae Price, 1936 (basis of record)
Caballerocotyla Price, 1960 accepted as Capsala Bosc, 1811 (basis of record)
Calceostoma Van Beneden, 1858 (basis of record)
Calceostoma calceostoma (Wagener, 1857) (basis of record)
Calceostoma herculanea Euzet & Vala, 1976 (basis of record)
Calceostoma paronai Gupta & Sachdeva, 1992 (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 affinis Scott, 1911 (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)
Capsala martinieri Bosc, 1811 (basis of record)
Capsala pelamydis (Taschenberg, 1878) Johnston, 1929 (basis of record)
Capsala thynni (Guiart, 1938) Sproston, 1946 (basis of record)
Capsalidae Baird, 1853 (basis of record)
Capsaloides Price, 1936 (basis of record)
Capsaloides perugiai (Setti, 1898) Price, 1938 (basis of record)
Cathariotrema Johnston & Tiegs, 1922 (basis of record)
Cemocotyle Sproston, 1946 (basis of record)
Cemocotyle trachuri Dillon & Hargis, 1965 (basis of record)
Cemocotylidae Price, 1962 accepted as Heteraxinidae Unnithan, 1957 (basis of record)
Chauhanea Ramalingam, 1953 (basis of record)
Chauhanea mediterranea Euzet & Trilles, 1960 accepted as Cotyloatlantica mediterranea (Euzet & Trilles, 1960) Bravo-Hollis, 1984 (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)
Cleithrarticus Mizelle, 1963 (basis of record)
Cotyloatlantica Bravo-Hollis, 1984 (basis of record)
Cotyloatlantica mediterranea (Euzet & Trilles, 1960) Bravo-Hollis, 1984 (basis of record)
Cyclocotyla Otto, 1821 (basis of record)
Cycloplectanum Oliver, 1968 accepted as Pseudorhabdosynochus Yamaguti, 1958 (basis of record)
Cycloplectanum beverleyburtonae Oliver, 1984 accepted as Pseudorhabdosynochus beverleyburtonae (Oliver, 1984) Kritsky & Beverley-Burton, 1986 (basis of record)
Cycloplectanum echinophallus (Euzet & Oliver, 1965) Oliver, 1968 accepted as Echinoplectanum echinophallus (Euzet & Oliver, 1965) Justine & Euzet, 2006 (basis of record)
Cycloplectanum riouxi Oliver, 1986 accepted as Pseudorhabdosynochus riouxi (Oliver, 1986) Santos, Buchmann & Gibson, 2000 (basis of record)
Dactylogyridae Bychowsky, 1933 (basis of record)
Dactylogyrus Diesing, 1850 (basis of record)
Dactylogyrus auriculatus (von Nordmann, 1832) Diesing, 1850 (basis of record)
Dactylogyrus crucifer Wagener, 1857 (basis of record)
Dactylogyrus fallax Wagener, 1857 (basis of record)
Dactylogyrus micracanthus Nybelin, 1937 (basis of record)
Dactylogyrus similis Wagener, 1909 (basis of record)
Dactylogyrus sphyrna Linstow, 1878 (basis of record)