The family Aplodontiidae also known as Aplodontidae, Haplodontiidae or Haploodontini is traditionally classified as the sole extant family of the suborder Protrogomorpha. It may be the sister family of the Sciuridae.
There are fossils from the Oligocene until Miocene in Asia, from Oligocene in Europe and from the Oligocene until the present in North America, where there is the only living species: the mountain beaver ( Aplodontia rufa).
Systematics
It includes the following genera:
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Aplodontia Richardson, 1829
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† Altasciurus Korth, 2019
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† Ameniscomys Dehm, 1950
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† Ansomys Qiu, 1987
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† Dakotallomys
[A. R. Tedrow and W. W. Korth. 1999. Paludicola 2(3):257.] Tedrow and Korth, 1999
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† Disallomys
Korth, 2009
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† Ephemeromys Wang & Heissig, 1984
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† Haplomys Miller and Gidley, 1918
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† Leptoromys
[A. R. Tedrow and W. W. Korth. 1997. Paludicola 1(2):80-90.] Tedrow and Korth, 1997
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† Liodontia Miller and Gidley, 1918
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† Meniscomys Cope, 1879
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† Niglarodon Black, 1961
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† Ninamys
Vianey-Liaud, Rodrigues & Marivaux, 2013
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† Oligopetes Heissig, 1979
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† Paracitellus Dehm, 1950
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† Paransomys
Vianey-Liaud, Rodrigues & Marivaux, 2013
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† Proansomys
[Bi, Shundong, Jin Meng, Sarah McLean, Wenyu Wu, Xijun Ni & Jie Ye. 2013. A New Genus of Aplodontid Rodent (Mammalia, Rodentia) from the Late Oligocene of Northern Junggar Basin, China. Public Library of Science, ONE 8(1): e52625.] Bi, Meng, McLean, Wu, Ni & Ye, 2013
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† Prosciurus Matthew, 1910
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† Pseudaplodon Miller, 1927
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† Sciurodon Schlosser, 1884
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† Selenomys Matthew and Granger, 1923
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† Sewelleladon Shotwell, 1958
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† Tardontia Shotwell, 1958
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† Trigonomys Heissig, 1979