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 Sigmodontinae Wagner, 1843
Genus ‡Megalomys Trouessart, 1881 - West Indian giant rice rats
1 ‡Megalomys desmarestii Fischer, 1829 - Antillean giant rice rat
2 ‡Megalomys luciae Major, 1901 - Santa Lucia giant rice rat