Thomasomys ischyruslong-tailed thomasomys(Also: strong-tailed oldfield mouse)
SuborderMyomorphamice, rats, gerbils, jerboas, and relatives
SuperfamilyMuroideamice, rats, gerbils, and relatives
FamilyCricetidaeNew World rats and mice, voles, hamsters, and relatives
GenusThomasomysoldfield mice and Thomas's paramo mice