Acanthocotyle Monticelli, 1888 (basis of record)
Acanthocotylidae Monticelli, 1903 (basis of record)
Anthocotyle Van Beneden & Hesse, 1863 (basis of record)
Anthocotyle merluccii Van Beneden & Hesse, 1863 (basis of record)
Benedenia Diesing, 1858 (basis of record)
Capsala Bosc, 1811 (basis of record)
Capsala martinieri Bosc, 1811 (basis of record)
Capsalidae Baird, 1853 (basis of record)
Diclidophora Krøyer, 1838 (basis of record)
Diclidophora denticulata (Olsson, 1876) Price, 1943 (basis of record)
Diclidophora macruri (Brinkmann, 1942) Sproston, 1946 accepted as Macrouridophora macruri (Brinkmann, 1942) Rubec & Dronen, 1994 (basis of record)
Diclidophoridae Cerfontaine, 1895 (basis of record)
Diclybothriidae Bychowsky & Gusev, 1950 (basis of record)
Diclybothrium Leuckart, 1835 (basis of record)
Diclybothrium armatum Leuckart, 1835 (basis of record)
Discocotyle Diesing, 1850 (basis of record)
Discocotyle sagittata (Leuckart, 1842) Diesing, 1850 (basis of record)
Discocotylidae Price, 1936 (basis of record)
Entobdella Blainville in Lamarck, 1818 (basis of record)
Entobdella hippoglossi (Müller, 1776) Blainville, 1818 (basis of record)
Gyrodactylidae Cobbold, 1864 (basis of record)
Gyrodactyloides Bychowsky, 1947 (basis of record)
Gyrodactylus von Nordmann, 1832 (basis of record)
Gyrodactylus callariatis Malmberg, 1957 (basis of record)
Gyrodactylus harengi Malmberg, 1957 (basis of record)
Hexabothriidae Price, 1942 (basis of record)
Kuhnia Sproston, 1945 (basis of record)
Kuhnia scombri (Kuhn, 1829) Sproston, 1945 (basis of record)
Macrouridophora Rubec & Dronen, 1994 (basis of record)
Macrouridophora macruri (Brinkmann, 1942) Rubec & Dronen, 1994 (basis of record)
Macrouridophora nezumiae (Munroe, Campbell & Zwerner, 1981) Rubec & Dronen, 1994 (basis of record)
Mazocraeidae Price, 1936 (basis of record)
Megalocotyle Folda, 1928 (basis of record)
Microbothriidae Price, 1936 (basis of record)
Microbothrium Olsson, 1868 accepted as Micropharynx Jägerskiöld, 1896 (basis of record)
Microbothrium apiculatum Olsson, 1869 (basis of record)
Microcotyle Van Beneden & Hesse, 1863 (basis of record)
Microcotyle pomatomi Goto, 1899 (basis of record)
Microcotyle sebastis Goto, 1894 (basis of record)
Microcotylidae Taschenberg, 1879 (basis of record)
Monopisthocotylea (basis of record)
Nasicola Yamaguti, 1968 (basis of record)
Nitzschia Baer, 1826 (basis of record)
Nitzschia sturionis (Abildgaard, 1794) Krøyer, 1852 (basis of record)
Polyopisthocotylea (basis of record)
Pseudacanthocotyla Yamaguti, 1963 accepted as Acanthocotyle Monticelli, 1888 (basis of record)
Pseudacanthocotyla verrilli (Goto, 1899) Yamaguti, 1963 accepted as Acanthocotyle verrilli Goto, 1899 (basis of record)
Rajonchocotyle Cerfontaine, 1899 (basis of record)
Rajonchocotyle emarginata (Olsson, 1876) Sproston, 1946 (basis of record)
Squalonchocotyle Cerfontaine, 1899 (basis of record)
Tristoma Cuvier, 1817 (basis of record)
Tristoma coccineum Cuvier, 1817 (basis of record)
Tristoma integrum Diesing, 1850 (basis of record)
Trochopus Diesing, 1850 (basis of record)
Udonella Johnston, 1835 (basis of record)
Udonella caligorum Johnston, 1835 (basis of record)
Udonellidae Taschenberg, 1879 (basis of record)

European waters (ERMS scope) for Anthocotyle merluccii Van Beneden & Hesse, 1863 
European waters (ERMS scope) for Capsala martinieri Bosc, 1811 
European waters (ERMS scope) for Diclidophora denticulata (Olsson, 1876) Price, 1943 
European waters (ERMS scope) for Diclidophora macruri (Brinkmann, 1942) Sproston, 1946 
European waters (ERMS scope) for Diclybothrium armatum Leuckart, 1835 
European waters (ERMS scope) for Discocotyle sagittata (Leuckart, 1842) Diesing, 1850 
European waters (ERMS scope) for Entobdella hippoglossi (Müller, 1776) Blainville, 1818 
European waters (ERMS scope) for Gyrodactylus callariatis Malmberg, 1957 
European waters (ERMS scope) for Gyrodactylus harengi Malmberg, 1957 
European waters (ERMS scope) for Kuhnia scombri (Kuhn, 1829) Sproston, 1945 
European waters (ERMS scope) for Macrouridophora macruri (Brinkmann, 1942) Rubec & Dronen, 1994 
European waters (ERMS scope) for Macrouridophora nezumiae (Munroe, Campbell & Zwerner, 1981) Rubec & Dronen, 1994 
European waters (ERMS scope) for Microbothrium apiculatum Olsson, 1869 
European waters (ERMS scope) for Microcotyle pomatomi Goto, 1899 
European waters (ERMS scope) for Microcotyle sebastis Goto, 1894 
European waters (ERMS scope) for Nitzschia sturionis (Abildgaard, 1794) Krøyer, 1852 
European waters (ERMS scope) for Pseudacanthocotyla verrilli (Goto, 1899) Yamaguti, 1963 
European waters (ERMS scope) for Rajonchocotyle emarginata (Olsson, 1876) Sproston, 1946 
European waters (ERMS scope) for Tristoma coccineum Cuvier, 1817 
European waters (ERMS scope) for Tristoma integrum Diesing, 1850 
European waters (ERMS scope) for Udonella caligorum Johnston, 1835 

 Identification

 for Allopseudaxine Yamaguti, 1943

Allopseudaxine sp. [details]

 Identification

 for Cathariotrema Johnston & Tiegs, 1922

Cathariotrema sp. [details]

 Identification

 for Cleithrarticus Mizelle, 1963

Cleithrarticus sp. [details]

 Identification

 for Diplectanotrema Johnston & Tiegs, 1922

Diplectanotrema sp. [details]