Class Mammalia Linnaeus, 1758 - mammals
   Order Rodentia Bowdich, 1821 - rodents
     Suborder Sciurognathi (Tullberg, 1899) see Suborder Sciuromorpha Brandt, 1855
       Family Sciuridae Batsch, 1788 - squirrels, chipmunks, marmots, and prairie dogs
         Subfamily Sciurinae Batsch, 1788 - tree and ground squirrels
           Genus Xerus Hemprich & Ehrenberg, 1832 - African ground squirrels
             1 Xerus erythropus E. Geoffroy, 1803 - Geoffroy's ground squirrel
             2 Xerus inauris (Zimmermann, 1780) - Cape ground squirrel
             3 Xerus princeps Thomas, 1929 - Kaokoveld ground squirrel
             4 Xerus rutilus (Cretzschmar, 1826) - unstriped ground squirrel
             5 Subgenus Euxerus Thomas, 1909
             6 Subgenus Geosciurus Smith, 1834
             7 Subgenus Xerus (Hemprich & Ehrenberg, 1832)