OtonyctomysHatt's vesper rat and Yucatan vesper rat
SuborderMyomorphamice, rats, gerbils, jerboas, and relatives
SuperfamilyMuroideamice, rats, gerbils, and relatives
FamilyCricetidaeNew World rats and mice, voles, hamsters, and relatives
GenusOtonyctomysHatt's vesper rat and Yucatan vesper rat