Petromyscus

Petromyscus is a genus of rodent in the family Nesomyidae. It is so distinct from other rodents that it is placed as the only genus in subfamily Petromyscinae. In previous classifications, Delanymys brooksi has also been placed in the subfamily. They are found in southwestern Africa. These animals have a sharp lower point to their V-shaped infraorbital canal. Their molars are intermediate between the ancestral cricetid style tooth and the dendromurine style tooth.

Petromyscus Temporal range: Pliocene - Recent
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Class:	Mammalia
Order:	Rodentia
Family:	Nesomyidae
Subfamily:	Petromyscinae Roberts, 1951
Genus:	Petromyscus Thomas, 1926
Species
Petromyscus barbouri Petromyscus collinus Petromyscus monticularis Petromyscus shortridgei

The genus contains the following species:

• Barbour's rock mouse (Petromyscus barbouri)
• Pygmy rock mouse (Petromyscus collinus)
• Brukkaros pygmy rock mouse (Petromyscus monticularis)
• Shortridge's rock mouse (Petromyscus shortridgei)

References

• Jansa, S. A., S. M. Goodman, and P. K. Tucker. 1999. Molecular phylogeny and biogeography of the native rodents of Madagascar (Muridae, Nesomyinae): a test of the single origin hypothesis. Cladistics, 15:253-270.
• Jansa, S. A. and M. Weksler. Phylogeny of muroid rodents: relationships within and among major lineages as determined by IRBP gene sequences. Molecular Phylogenetics and Evolution, 31:256-276.
• Kingdon, J. 1997. The Kingdon Field Guide to African Mammals. Academic Press Limited, London.
• Musser, G. G.; Carleton, M. D. (2005). "Superfamily Muroidea". In Wilson, D. E.; Reeder, D. M. (eds.). Mammal Species of the World: A Taxonomic and Geographic Reference (3rd ed.). Johns Hopkins University Press. pp. 894–1531. ISBN 978-0-8018-8221-0. OCLC 62265494.
• Nowak, R. M. 1999. Walker's Mammals of the World, Vol. 2. Johns Hopkins University Press, London.
• Steppan, S. J., R. A. Adkins, and J. Anderson. 2004. Phylogeny and divergence date estimates of rapid radiations in muroid rodents based on multiple nuclear genes. Systematic Biology, 53:533-553.