After McKenna & Bell, 1997

<==o Protrogomorpha
   |--o †Ischyromyoidea Alston, 1876 [nom. transl. Wood, 1937 ex Ischyromyidae Alston, 1876]
   |  `-- †Ischyromyidae Alston, 1876 [incl. Paramyida Haeckel, 1895; Paramyidae Miller & Gidley, 1918]
   `--o Aplodontoidea Brandt, 1855 [nom. transl. Matthew, 1910 pro Haploodontidae Brandt, 1855][Haploodontini Brandt, 1855; Haploodontoidea Gill, 1872] (vuorimajavansukuiset jyrsijät)
      |?- †Epeiromys spanius Korth, 1989; L.Olig. NA.
      |?- †Sinomylagaulus Wu, 1988; M. Mioc. As.
      |-- †Allomyidae Marsh, 1877 [incl. Aplodontidae: Prosciurinae Wilson, 1949]
      `--+-- †Mylagaulidae Cope, 1881
         `-- Aplodontidae Brandt, 1855 [nom. correct. Trouessart, 1897 pro Haplodontiidae Brandt, 1855] (vuorimajavat)

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