After “Wikipedia”, and Javonillo, Malabarba, Weitzman & Burns, 2010, with Recent species from Froese & Pauly, 2001 [“The Fishbase”]

<==o Cheirodontinae
   |?-o Spintherobolus
   |  |-- S. ankoseion Weitzman & Malabarba, 1999
   |  |-- S. broccae Myers, 1925
   |  |-- S. leptoura Weitzman & Malabarba, 1999
   |  `-- S. papilliferus Eigenmann, 1911
   |--o Prodontocharax
   |  |-- P. alleni Böhlke, 1953
   |  |-- P. howesi (Fowler, 1940)
   |  `-- P. melanotus Pearson, 1924
   `--+--o Cheirodon
      |  |-- C. australe Eigenmann, 1928
      |  |-- C. galusdae Eigenmann, 1928
      |  |-- C. ibicuhiensis Eigenmann, 1915
      |  |-- C. interruptus (Jenyns, 1842) (Uruguay tetra)
      |  |-- C. kiliani Campos, 1982
      |  `-- C. pisciculus Girard, 1855
      `--+-- “Macropsobryconuruguayanae Eigenmann, 1915
         `--+--o Serrapinnus
            |  |-- S. calliurus (Boulenger, 1900)
            |  |-- S. heterodon (Eigenmann, 1915)
            |  |-- S. kriegi (Schindler, 1937)
            |  |-- S. microdon (Eigenmann, 1915)
            |  |-- S. micropterus (Eigenmann, 1907)
            |  |-- S. notomelas (Eigenmann, 1915)
            |  `-- S. piaba (Lütken, 1875)
            `--+--o Compsura
               |  |-- C. gorgonae (Evermann & Goldsborough, 1909)
               |  `-- C. heterura Eigenmann, 1915
               `--o Odontostilbe
                  |-- O. dialeptura (Fink & Weitzman, 1974)
                  |-- O. dierythrura Fowler, 1940
                  |-- O. fugitiva Cope, 1870
                  |-- O. gracilis (Géry, 1960)
                  |-- O. microcephala Eigenmann, 1907
                  |-- O. mitoptera (Fink & Weitzman, 1974)
                  |-- O. paraguayensis Eigenmann & Kennedy, 1903
                  |-- O. pequira (Steindachner, 1882)
                  `-- O. roloffi Géry, 1972

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