Megadontomys thomasi Merriam 1898
Megadontomys thomasi Merriam 1898, Proc. Biol. Soc. Wash., 12: 116.
Type Locality: México, Guerrero, mountains near Chilpancingo, 9700 ft (2957 m).
Vernacular Names: Thomas' Big-toothed Deermouse.
Distribution: High Sierra Madre del Sur of Guerrero, México.
Conservation: IUCN – Lower Risk (lc).
Discussion: Formerly encompassed cryophilus and nelsoni as subspecies (Musser, 1964); see above accounts.