Class Mammalia Linnaeus, 1758 - mammals
   Subclass Theria Parker & Haswell, 1897
     Infraclass Eutheria Gill, 1872
       Magnorder Boreoeutheria Springer & de Jong, 2001
         Superorder Euarchontoglires Murphy, Stanyon & O'Brien, 2001
           Order Rodentia Bowdich, 1821 - rodents
             Suborder Hystricomorpha Brandt, 1855
               Infraorder Hystricognathi Tullberg, 1899
                 1 Family Hystricidae Fischer de Waldheim, 1817, incertae sedis - Old World porcupines
                 2 Family Thryonomyidae Pocock, 1922, incertae sedis - cane rats
                 3 Family Petromuridae Tullberg, 1899, incertae sedis - dassie rat
                 4 Family Heterocephalidae Landry, 1957, incertae sedis
                 5 Family Bathyergidae Waterhouse, 1841, incertae sedis - African mole-rats
                 6 Superfamily Erethizontoidea Bonaparte, 1845 [monotypic]
                 7 Superfamily Cavioidea Fischer de Waldheim, 1817
                 8 Superfamily Chinchilloidea Bennett, 1833
                 9 Superfamily Octodontoidea Waterhouse, 1839