Subspeciation in the Meadow Mouse, Microtus Pennsylvanicus, in Wyoming, Colorado, and Adjacent Areas

Subspeciation in the Meadow Mouse, Microtus pennsylvanicus, in Wyoming, Colorado, and Adjacent Areas is a scientific study by Sydney Anderson published in the mid-20th century. The book investigates the morphological variations among different subspecies of meadow mice across these regions, detailing the identification of three new subspecies based on color, size, and skull measurements from 762 specimens. Anderson's work emphasizes the ecological factors influencing the physical traits and distribution of these rodents, contributing to the understanding of evolutionary dynamics in animal populations.