Class Mammalia Linnaeus, 1758 - mammals
Status: extant
   Order Rodentia Bowdich, 1821 - rodents
  Status: extant
     Suborder Hystricognathi Tullberg, 1899 see Infraorder Hystricognathi Tullberg, 1899
    Status: extant
       Family ‡Heptaxodontidae Anthony, 1917
      Status: extinct
         Subfamily ‡Heptaxodontinae Anthony, 1917 see Family Heptaxodontidae Anthony, 1917
        Status: extinct
           Genus ‡Elasmodontomys Anthony, 1916
          Status: extinct
             1 ‡Elasmodontomys obliquus Anthony, 1916
            Status: extinct