Baiomys, the New World pygmy mice, is a genus of rodents in the family Cricetidae. Together with Scotinomys, it forms the tribe Baiomyini. It contains the smallest rodents in North America. It currently contains three extant species:
Southern pygmy mouse, Baiomys brunneus Mexican pygmy mouse, Baiomys musculus Northern pygmy mouse, Baiomys taylori
Additionally, there are seven known fossil species: Baiomys aquilonius Zakrzewski, 1969 Baiomys brachygnathus (Gidley, 1922) Baiomys intermedius Packard & T. Alvarez, 1965 Baiomys kolbi Hibbard, 1952 Baiomys minimus (Gidley, 1922) Baiomys rexroadi Hibbard, 1941 Baiomys sawrockensis Hibbard, 1953
References
Amman, B R., R. D. Bradley. 2003. Molecular evolution in Baiomys (Rodentia: Sigmodontinae): Evidence for a genetic subdivision in B. musculus. Journal of Mammalogy 85:162-166. Integrated Taxonomic Information System . Retrieved 3 April 2007.