Class Mammalia Linnaeus, 1758 - mammals
   Order Rodentia Bowdich, 1821 - rodents
     Suborder Sciurognathi (Tullberg, 1899) see Suborder Sciuromorpha Brandt, 1855
       Family Muridae Batsch, 1788 - rats, mice, hamsters, voles, lemmings, and gerbils
         Subfamily Gerbillinae Gray, 1825 - gerbils
           Genus Psammomys Cretzschmar, 1828 - fat sand rats
             1 Psammomys obesus Cretzschmar, 1828 - fat sand rat
             2 Psammomys vexillaris Thomas, 1925