Amphimerus Barker, 1911 (identification resource)
Amphimerus anatis (Yamaguti, 1933) Gower, 1938 (redescription)
Amphimerus elongatus Gower, 1938 (redescription)
Amphimerus lancea (Diesing, 1850) Barker, 1911 (redescription)
Amphimerus ovalis (Barker, 1911) Barker, 1911 (redescription)
Amphimerus pseudofelineus (Ward, 1901) Barker, 1911 (redescription)
Circus rufus Brisson accepted as Circus aeruginosus (Linnaeus, 1758) (basis of record)
Cladocystis Poche, 1926 (identification resource)
Cladocystis intestinalis Vaz, 1932 accepted as Neocladocystis intestinalis (Vaz, 1932) Manter & Pritchard, 1969 (redescription)
Cladocystis trifolium (Braun, 1901) Poche, 1926 (redescription)
Clonorchis Looss, 1907 (identification resource)
Clonorchis sinensis (Cobbold, 1875) Looss, 1907 (redescription)
Delphinicola Yamaguti, 1933 (identification resource)
Delphinicola tenuis Yamaguti, 1933 (redescription)
Delphinicolinae Yamaguti, 1933 (identification resource)
Diasia Travassos, 1922 accepted as Diasiella Travassos, 1949 (identification resource)
Erschoviorchis Skrjabin, 1945 (identification resource)
Erschoviorchis lintoni (Gower, 1939) Skrjabin, 1945 (redescription)
Evranorchis Skrjabin, 1944 (identification resource)
Evranorchis ophidiarum (Tubangui & Masilungan, 1935) Skrjabin, 1944 (redescription)
Gomtia Thapar, 1930 (identification resource)
Gomtia piscicola Thapar, 1930 (redescription)
Metorchiinae Lühe, 1909 (identification resource)
Metorchis Looss, 1899 (identification resource)
Metorchis albidus (Braun, 1893) Looss, 1899 accepted as Metorchis bilis (Braun, 1790) Odening, 1962 (redescription)
Metorchis conjunctus (Cobbold, 1860) Looss, 1899 (redescription)
Metorchis crassiusculus (Rudolphi, 1809) Looss, 1899 accepted as Metorchis bilis (Braun, 1790) Odening, 1962 (redescription)
Metorchis orientalis Tanabe, 1920 (redescription)
Metorchis pinguinicola Skrjabin, 1913 accepted as Metorchis xanthosomus (Creplin, 1846) Braun, 1902 (redescription)
Metorchis tener Kowalewsky, 1903 (redescription)
Metorchis xanthosomus (Creplin, 1846) Braun, 1902 (redescription)
Nyctea nivea accepted as Bubo scandiacus (Linnaeus, 1758) (basis of record)
Oesophagicola Yamaguti, 1933 (identification resource)
Oesophagicola laticaudae Yamaguti, 1933 (redescription)
Oesophagicolinae Yamaguti, 1933 (identification resource)
Opisthorchiidae Looss, 1899 (identification resource)
Opisthorchioidea Looss, 1899 (identification resource)
Opisthorchis Blanchard, 1895 (identification resource)
Opisthorchis felineus (Rivolta, 1884) Blanchard, 1895 (redescription)
Opisthorchis piscicola Odhner, 1902 accepted as Thaparotrema piscicola (Odhner, 1902) Scholz, 2008 (redescription)
Opisthorchis tenuicollis (Rudolphi, 1819) Stiles & Hassall, 1896 (redescription)
Pachytrema Looss, 1907 (identification resource)
Pachytrema calculus Looss, 1907 (redescription)
Pachytrema compositum Shcherbovich, 1946 (redescription)
Pachytrema magnum Travassos, 1921 (redescription)
Pachytrema paniceum Brinkmann, 1942 (redescription)
Pachytrema proximum Travassos, 1921 (redescription)
Pachytrema sanguineum (Linton, 1928) Purvis, 1937 (redescription)
Pachytrema tringae Layman, 1926 (redescription)
Pachytrematidae Baer, 1943 accepted as Opisthorchiidae Looss, 1899 (identification resource)
Parametorchis Skrjabin, 1913 (identification resource)
Parametorchis complexus (Stiles & Hassall, 1894) Skrjabin, 1913 (redescription)
Parametorchis noveboracensis Hung, 1926 accepted as Parametorchis complexus (Stiles & Hassall, 1894) Skrjabin, 1913 (redescription)
Phocitrema Goto & Ozaki, 1930 (identification resource)
Phocitrema fusiforme Goto & Ozaki, 1930 (redescription)
Phocitrematinae Yamaguti, 1933 accepted as Heterophyidae Leiper, 1909 (identification resource)
Plotnikovia Skrjabin, 1945 (identification resource)
Plotnikovia podilymbae (Olsen, 1938) Skrjabin, 1945 (redescription)
Plotnikoviinae Skrjabin, 1945 (identification resource)
Pseudamphimerinae Skrjabin & Petrov, 1950 accepted as Opisthorchiinae Looss, 1899 (original description)
Pseudamphimerus Gower, 1940 (identification resource)
Pseudamphimerus sterni Gower, 1940 (redescription)
Pseudamphistomum Lühe, 1908 (identification resource)
Pseudamphistomum truncatum (Rudolphi, 1819) Lühe, 1908 (redescription)
Sterna magna (basis of record)
Witenbergia Vaz, 1932 (identification resource)
Witenbergia witenbergi Vaz, 1932 (redescription)

Brazil for Cladocystis intestinalis Vaz, 1932 
Brazil for Cladocystis trifolium (Braun, 1901) Poche, 1926 
Brazil for Witenbergia witenbergi Vaz, 1932 
Brazilian Exclusive Economic Zone for Amphimerus lancea (Diesing, 1850) Barker, 1911 
Brazilian Exclusive Economic Zone for Pachytrema magnum Travassos, 1921 
Brazilian Exclusive Economic Zone for Pachytrema proximum Travassos, 1921 
Central Asia for Pachytrema tringae Layman, 1926 
China for Metorchis orientalis Tanabe, 1920 
Egypt for Opisthorchis piscicola Odhner, 1902 
Eurasia for Opisthorchis tenuicollis (Rudolphi, 1819) Stiles & Hassall, 1896 
France for Metorchis albidus (Braun, 1893) Looss, 1899 
Germany for Metorchis albidus (Braun, 1893) Looss, 1899 
Holarctic for Amphimerus elongatus Gower, 1938 
India for Gomtia piscicola Thapar, 1930 
Indian Exclusive Economic Zone for Amphimerus lancea (Diesing, 1850) Barker, 1911 
Italian Exclusive Economic Zone for Pachytrema calculus Looss, 1907 
Japan for Amphimerus anatis (Yamaguti, 1933) Gower, 1938 
Japan for Metorchis orientalis Tanabe, 1920 
Japanese Exclusive Economic Zone for Delphinicola tenuis Yamaguti, 1933 
Japanese Exclusive Economic Zone for Oesophagicola laticaudae Yamaguti, 1933 
Japanese Exclusive Economic Zone for Phocitrema fusiforme Goto & Ozaki, 1930 
New York for Parametorchis noveboracensis Hung, 1926 
North Africa for Metorchis crassiusculus (Rudolphi, 1809) Looss, 1899 
North America for Amphimerus ovalis (Barker, 1911) Barker, 1911 
North America for Amphimerus pseudofelineus (Ward, 1901) Barker, 1911 
North America for Metorchis conjunctus (Cobbold, 1860) Looss, 1899 
North America for Parametorchis complexus (Stiles & Hassall, 1894) Skrjabin, 1913 
Norwegian Exclusive Economic Zone for Pachytrema paniceum Brinkmann, 1942 
Palaearctic for Opisthorchis felineus (Rivolta, 1884) Blanchard, 1895 
Palaearctic for Pseudamphistomum truncatum (Rudolphi, 1819) Lühe, 1908 
Philippines Exclusive Economic Zone for Evranorchis ophidiarum (Tubangui & Masilungan, 1935) Skrjabin, 1944 
Poland for Metorchis crassiusculus (Rudolphi, 1809) Looss, 1899 
Poland for Metorchis tener Kowalewsky, 1903 
Russian Far East for Pachytrema compositum Shcherbovich, 1946 
Soviet Union for Erschoviorchis lintoni (Gower, 1939) Skrjabin, 1945 
Soviet Union for Metorchis albidus (Braun, 1893) Looss, 1899 
Soviet Union for Metorchis orientalis Tanabe, 1920 
Temperate Southern Africa for Metorchis pinguinicola Skrjabin, 1913 
Transbaikalia for Metorchis xanthosomus (Creplin, 1846) Braun, 1902 
United States Exclusive Economic Zone for Pachytrema calculus Looss, 1907 
United States Exclusive Economic Zone for Pachytrema sanguineum (Linton, 1928) Purvis, 1937 
United States Exclusive Economic Zone for Pseudamphimerus sterni Gower, 1940 
USA for Plotnikovia podilymbae (Olsen, 1938) Skrjabin, 1945 
West Europe for Metorchis xanthosomus (Creplin, 1846) Braun, 1902 
West Siberia for Metorchis xanthosomus (Creplin, 1846) Braun, 1902