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 Petromyscinae Roberts, 1951
1 Genus †Stenodontomys Pocock, 1987
2 Genus Delanymys Hayman, 1962 - Delany's swamp mouse
3 Genus Petromyscus Thomas, 1926 - rock mice