Relationships
As with many other mice historically referred to as the "dendromurines", the phylogenetic position of Prionomys is somewhat uncertain. Denys et al. (1995) demonstrated a close association between Prionomys and Dendroprionomys on the basis of molar structure. This association has been widely noted elsewhere. Musser and Carleton (2005) suggest that the two are related may warrant a distinct tribe within the Dendromurinae. They also noted the retention of these two genera in the Dendromurinae seems reasonable but requires further testing. Denys et al. (2006) note the similarities between Prionomys and the deomyine Deomys, but suggest this is due to convergence due to similar diet and habits.
Read more about this topic: Dollman's Tree Mouse