Allocreadiidae Looss, 1902 (basis of record)
Allocreadioidea Looss, 1902 accepted as Gorgoderoidea Looss, 1901 (basis of record)
Aphanurus Looss, 1907 (basis of record)
Apocreadiidae Skrjabin, 1942 accepted as Megaperidae Manter, 1934 (basis of record)
Aponurus Looss, 1907 (basis of record)
Azygiidae Lühe, 1909 (basis of record)
Cryptocotyle Lühe, 1899 (basis of record)
Cryptocotyle jejuna (Nicoll, 1907) Ransom, 1920 (basis of record)
Derogenes Lühe, 1900 (basis of record)
Derogenes varicus (Müller, 1784) Looss, 1901 (basis of record)
Derogenidae Nicoll, 1910 (basis of record)
Digenea (basis of record)
Diplostomidae Poirier, 1886 (basis of record)
Diplostomoidea Poirier, 1886 (basis of record)
Diplostomum von Nordmann, 1832 (basis of record)
Echinostomatoidea Looss, 1902 (basis of record)
Echinostomida accepted as Plagiorchiida (basis of record)
Fasciola Linnaeus, 1758 (sensu lato)  (basis of record)
Fasciolidae Railliet, 1895 (basis of record)
Fellodistomidae Nicoll, 1909 (basis of record)
Genolinea Manter, 1925 (basis of record)
Glomericirrus Yamaguti, 1937 (basis of record)
Glomericirrus macrouri (Gaevskaja, 1973) Gaevskaja, 1979 (basis of record)
Gonocerca Manter, 1925 (basis of record)
Gonocerca phycidis Manter, 1925 (basis of record)
Gymnophallidae Odhner, 1905 (basis of record)
Gymnophalloidea Odhner, 1905 (basis of record)
Gymnophallus Odhner, 1900 (basis of record)
Gymnophallus deliciosus (Olsson, 1893) Odhner, 1900 (basis of record)
Helicometra Odhner, 1902 (basis of record)
Hemiuridae Looss, 1899 (basis of record)
Hemiuroidea Looss, 1899 (basis of record)
Hemiurus Rudolphi, 1809 (basis of record)
Heterophyidae Leiper, 1909 (basis of record)
Lecithaster Lühe, 1901 (basis of record)
Lecithasteridae Odhner, 1905 (basis of record)
Lecithochirium Lühe, 1901 (basis of record)
Lecithophyllum Odhner, 1905 (basis of record)
Lepidapedon Stafford, 1904 (basis of record)
Lepocreadiidae Odhner, 1905 (basis of record)
Lepocreadioidea Odhner, 1905 (basis of record)
Macvicaria Gibson & Bray, 1982 (basis of record)
Microphalloidea Ward, 1901 (basis of record)
Monorchiidae Odhner, 1911 (basis of record)
Neolepidapedon Manter, 1954 (basis of record)
Notocotylidae Lühe, 1909 (basis of record)
Notocotyloidea Lühe, 1909 accepted as Pronocephaloidea Looss, 1899 (basis of record)
Notocotylus Diesing, 1839 (basis of record)
Ogmogaster Jägerskiöld, 1891 (basis of record)
Ogmogaster antarctica Johnston, 1931 (basis of record)
Opechona Looss, 1907 (basis of record)
Opecoelidae Ozaki, 1925 (basis of record)
Opisthorchiidae Looss, 1899 (basis of record)
Opisthorchioidea Looss, 1899 (basis of record)
Otodistomum Stafford, 1904 (basis of record)
Otodistomum cestoides (Van Beneden, 1870) Odhner, 1911 (basis of record)
Parahemiurus Vaz & Pereira, 1930 (basis of record)
Paralepidapedon Shimazu & Shimura, 1984 (basis of record)
Paramonostomum Lühe, 1909 (basis of record)
Philophthalmidae Looss, 1899 (basis of record)
Plagioporus Stafford, 1904 (basis of record)
Plagiorchiida (basis of record)
Podocotyle Dujardin, 1845 (basis of record)
Progonus Looss, 1899 (basis of record)
Renicola Cohn, 1904 (basis of record)
Renicolidae Dollfus, 1939 (basis of record)
Renicoloidea Dollfus, 1939 accepted as Microphalloidea Ward, 1901 (basis of record)
Stenakron Stafford, 1904 (basis of record)
Steringophorus Odhner, 1905 (basis of record)
Strigeida accepted as Diplostomida (basis of record)
Zoogonoidea Odhner, 1902 accepted as Microphalloidea Ward, 1901 (basis of record)