After Korth, 2001

<==o †Agnotocastorinae Korth & Emry, 1997
   |--o Agnotocastorini Korth & Emry, 1997
   |  |--o †Agnotocastor Stirton, 1935; L.-U.Olig. As. L.Olig. NA.
   |  |  |-- †A. coloradensis R.W. Wilson, 1949
   |  |  |-- †A. galushai Emry, 1972
   |  |  |-- †A. montanus (Scott, 1893) [Steneofiber montanus Scott, 1893; Agnotocastor montanus (Scott); Stirton, 1935, and A.E. Wood, 1937]
   |  |  |-- †A. praetereadens Stirton, 1935
   |  |  `-- †A. readingi Korth, 1988
   |  |--o †Hystricops Leidy, 1856 [taxonomic history] ?M.Mioc. As. M.-U. Mioc. As.
   |  |  |-- †H. browni Shotwell, 1963
   |  |  `-- †H. venustus (Leidy, 1858) [taxonomic history]
   |  `-- †Neatocastor hesperus (Douglass, 1901) Korth, 1996 [taxonomic history]
   `--o †Anchitheriomyini Korth, 2001
      |--o †Anchitheriomys Roger, 1898 [incl. Amblycastor Matthew, 1918] ?L.Olig. M.Mioc. NA. M.Mioc. As. Eu.
      |  |-- †A. fluminis
      |  |-- †A. suevicus (Schlosser, 1884)
      |  |-- †A. wiedemanni
      |  `-- †A. tungurensis [Amblycastor tungurensis]
      |-- †Propalaeocastor Borisoglebskaya, 1967; L.-U.Olig. As.
      `--o †Oligotheriomys Korth, 1998b
         `-- †O. senrudi (A.E. Wood, 1945) [Monosaulax senrudi A.E. Wood, 1945; Hystricops senrudi (Wood); Stout & Stone, 1971, and Cassiliano (1980); Monosaulax senrudi Wood, Korth, 1994c; Oligotheriomys senrudi (Wood); Korth, 1998a]

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