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Megadontomys cryophilus

Oaxacan Big-toothed Deermouse

Order: Rodentia
Family: Cricetidae


Conservation Status: Endangered.

The three species of big-toothed deermice have been on the move - not geographically, but taxonomically. The first to be described and named was Peromyscus thomasi (Thomas’ Big-toothed Deermouse). The other two, the Oaxacan Big-toothed Deermouse and Nelson’s Big-toothed Deermouse, were originally classified as subspecies of Thomas’ Big-toothed Deermouse. Further study has led to the conclusion that these three deermice, all found in Mexican mountain habitats, are distinct from each other, and distinct from the many, widespread species of Peromyscus. Oaxacan Big-toothed Deermice are found in cloud and pine-oak forests in northern Oaxaca.

Also known as:
Oaxaca Giant Deermouse

Range: Total length: 300-351 mm; Tail 150-185 mm

Range: 61-113 g


Musser, 1964. Occasional Papers of the Museum of Zoology, University of Michigan, 636:13.


Mammal Species of the World

Distribution of Megadontomys cryophilus