1. Subfamily Alcicorninae Tendeiro, 1955
2. Subfamily Bucephalinae Poche, 1907
   1. Genus Aenigmatrema Corner, Cribb & Cutmore, 2020
   2. Genus Alcicornis MacCallum, 1917
   3. Genus Bucephalus von Baer, 1827
   4. Genus Parabucephalopsis Tang & Tang, 1976
   5. Genus Prosorhynchoides Dollfus, 1929
   6. Genus Pseudobucephalopsis Long & Lee, 1964
   7. Genus Pseudorhipidocotyle Wang & Pan in Long & Lee, 1964
   8. Genus Rhipidocotyle Diesing, 1858
   9. Genus Bucephaloides Hopkins, 1954 accepted as Prosorhynchoides Dollfus, 1929 (unaccepted > junior subjective synonym)
   10. Genus Bucephalopsis Diesing, 1855 accepted as Prosorhynchoides Dollfus, 1929 (synonym according to Bray, 1984; listed as synonym by Overstreet & Curran, 2002)
   11. Genus Eubucephalus Diesing, 1855 accepted as Bucephalus von Baer, 1827 (unaccepted > junior subjective synonym)
   12. Genus Gasterostoma Monticelli, 1888 accepted as Gasterostomum von Siebold, 1848 accepted as Bucephalus von Baer, 1827 (unaccepted > junior subjective synonym)
   13. Genus Gasterostomum von Siebold, 1848 accepted as Bucephalus von Baer, 1827 (unaccepted > junior objective synonym, Ruled to be a junior objective synonym of Bucephalus and placed on the Official Index of Rejected and Invalid Names in Zoology)
   14. Genus Labratrema Maillard, 1975 accepted as Bucephalus von Baer, 1827 (unaccepted > junior subjective synonym)
   15. Genus Nannoenterum Ozaki, 1924 accepted as Rhipidocotyle Diesing, 1858 (synonym)
   16. Genus Neobucephalopsis Dayal, 1948 accepted as Prosorhynchoides Dollfus, 1929 (listed as synonym by Overstreet & Curran, 2002)
3. Subfamily Bucephalopsinae Tendeiro, 1955
4. Subfamily Dolichoenterinae Yamaguti, 1958
   1. Genus Dolichoenterum Ozaki, 1924
   2. Genus Grammatorcynicola Bott & Cribb, 2005
   3. Genus Pseudodolichoenterum Yamaguti, 1971
5. Subfamily Heterobucephalopsinae Nolan, Curran, Miller, Cutmore, Cantacessi & Cribb, 2015
   1. Genus Heterobucephalopsis Gu & Shen, 1983
6. Subfamily Prosorhynchinae Nicoll, 1914
   1. Genus Dollfustrema Eckmann, 1934
   2. Genus Muraenicola Nolan & Cribb, 2010
   3. Genus Myorhynchus Durio & Manter, 1968
   4. Genus Neidhartia Nagaty, 1937
   5. Genus Neoprosorhynchus Dayal, 1948
   6. Genus Prosorhynchus Odhner, 1905
   7. Genus Pseudoprosorhynchus Yamaguti, 1938
   8. Genus Skrjabiniella Issaitschikow, 1928
   9. Genus Telorhynchus Crowcroft, 1947
   10. Genus Chabaudtrema Kohn, 1970 accepted as Prosorhynchus Odhner, 1905 (Synonym)
   11. Genus Dollfusina Eckmann, 1932 accepted as Dollfustrema Eckmann, 1934 (preoccupied)
   12. Genus Folliculovarium Gu & Shen, 1983 accepted as Muraenicola Nolan & Cribb, 2010 (preoccupied by Folliculovarium Singh & Sinha, 1981)
   13. Genus Neodollfustrema Long & Lee, 1964 accepted as Dollfustrema Eckmann, 1934
   14. Genus Rudolphinus Stunkard, 1974 accepted as Prosorhynchus Odhner, 1905 (synonym)
   15. Genus Telorhynchoides Lebedev, 1968 accepted as Telorhynchus Crowcroft, 1947 (synonym)
7. Subfamily Folliculovariinae Wang & Wang, 1998 accepted as Prosorhynchinae Nicoll, 1914 (synonym)
8. Subfamily Provarinae Wang, 1995 accepted as Bucephalinae Poche, 1907 (listed as synonym in Overstreet & Curran, 2002)
9. Subfamily Macrorchirhynchinae Bilqees, Ibrahim, Khan, Ajazuddin & Talat, 2010 (uncertain > taxon inquirendum)
10. Genus Macrorchirhynchus Bilqees, Ibrahim, Khan, Ajazuddin & Talat, 2010 (uncertain > taxon inquirendum)
11. Genus Proopisthogyne Koche, 1976 (uncertain > taxon inquirendum)

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