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 Microdillus Thomas, 1910
Microdillus peeli de Winton, 1898 - Somalia pygmy gerbil