After McKenna & Bell, 1997

    Ondatra Link, 1795
        Ondatra Lacépède, 1799
        Fiber G. Cuvier, 1800 non Fiber Dumeril, 1806 [jr. synon. of Castor]
        Mussascus Oken, 1816
        Simotes Fischer de Waldheim, 1817
        Moschomys Billberg, 1828
      including:
        Arvicola (†Anaptogonia) Cope, 1871
        †Sycium Cope, 1899 [= †Anaptogonia Cope, 1871]

        †Ondatra idahoensisOndatra annectens (Brown, 1908)

        †Ondatra nebracensisOndatra hiatidens

        Ondatra zibethicus (piisami)

Reference(s):