| With developments in molecular biology, biologists have powerful new tools to determine the relatedness of specimens found at different locations. Studies of chromosomes and gene sequences have helped identify Cockrum's Gray Shrew and several other species as being distinct from Notiosorex crawfordi, even where their ranges appear to overlap.
Also known as:
Cockrum's Desert Shrew
Baker, R.J., O'Neill, M.B., and McAliley, L.R. 2003. A New Species of Desert Shrew, Notiosorex, Based on Nuclear and Mitochondrial Sequence Data, p. 2. Occasional Papers, Museum of Texas Tech University, 222:1-12.
Mammal Species of the World (opens in a new window).