Class [Mammalia] Linnaeus, 1758 - mammals
Order Rodentia Bowdich, 1821 - rodents
Family Muridae Batsch, 1788 - rats, mice, hamsters, voles, lemmings, and gerbils
Subfamily Arvicolinae Gray, 1821 - voles
Genus Eolagurus Argyropulo, 1946 - yellow steppe lemmings
1 Eolagurus luteus Eversmann, 1840
2 Eolagurus przewalskii Büchner, 1889