1. Subfamily Catostominae Agassiz, 1850
   1. Tribe Catostomini Agassiz, 1850
      1. Genus Catostomus Lesueur, 1817
      2. Genus Chasmistes Jordan, 1878
      3. Genus Deltistes Seale, 1896
      4. Genus Pantosteus Cope in Cope & Yarrow, 1875
      5. Genus Xyrauchen Eigenmann & Kirsch, 1889
      6. Genus Minomus Girard, 1856 accepted as Catostomus Lesueur, 1817 (unaccepted > junior subjective synonym)
      7. Genus Notolepidomyzon Fowler, 1913 accepted as Catostomus Lesueur, 1817 (unaccepted > junior subjective synonym)
   2. Tribe Erimyzonini Hubbs, 1930
      1. Genus Erimyzon Jordan, 1876
      2. Genus Minytrema Jordan, 1878
   3. Tribe Moxostomatini Bleeker, 1863
      1. Genus Moxostoma Rafinesque, 1820
      2. Genus Lagochila Jordan & Brayton, 1877 accepted as Moxostoma Rafinesque, 1820 (unaccepted > junior subjective synonym)
      3. Genus Moxotoma Rafinesque, 1820 accepted as Moxostoma Rafinesque, 1820 (unaccepted > misspelling - incorrect subsequent spelling)
      4. Genus Myxostoma Rafinesque, 1820 accepted as Moxostoma Rafinesque, 1820 (unaccepted > misspelling - incorrect subsequent spelling, in Jordan 1877)
      5. Genus Placopharynx Cope, 1870 accepted as Moxostoma Rafinesque, 1820 (unaccepted > junior subjective synonym)
      6. Genus Ptychostomus Agassiz, 1855 accepted as Moxostoma Rafinesque, 1820 (unaccepted > junior subjective synonym)
      7. Genus Scartomyzon Fowler, 1913 accepted as Moxostoma Rafinesque, 1820 (unaccepted > junior subjective synonym)
      8. Genus Teretulus Rafinesque, 1820 accepted as Moxostoma Rafinesque, 1820 (unaccepted > junior subjective synonym)
   4. Tribe Thoburniini Hubbs, 1930
      1. Genus Hypentelium Rafinesque, 1818
      2. Genus Thoburnia Jordan & Snyder, 1917
      3. Genus Vexillichthys Armbruster, 2024
2. Subfamily Cycleptinae Gill, 1861
   1. Genus Cycleptus Rafinesque, 1819
   2. Genus Cyclepterus Rafinesque, 1819 accepted as Cycleptus Rafinesque, 1819 (unaccepted > misspelling - incorrect subsequent spelling)
3. Subfamily Ictiobinae Bleeker, 1863
   1. Genus Carpiodes Rafinesque, 1820
   2. Genus Ictiobus Rafinesque, 1820
   3. Genus Amblodon Rafinesque, 1819 accepted as Ictiobus Rafinesque, 1820 (unaccepted > unavailable name, suppressed, priority reversed)
   4. Genus Carpoides Rafinesque, 1820 accepted as Carpiodes Rafinesque, 1820 (unaccepted > misspelling - incorrect subsequent spelling)
   5. Genus Sclerognathus Valenciennes, 1844 accepted as Carpiodes Rafinesque, 1820 (unaccepted > junior subjective synonym)
4. Subfamily Myxocyprininae Fowler, 1958
   1. Genus Myxocyprinus Gill, 1877

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