Three New Beavers from Utah

In the mountains and waterways of Utah, three beaver populations had gone unnamed for centuries. This meticulous scientific study identifies and describes them: Castor canadensis pallidus, Castor canadensis rostralis, and Castor canadensis duchesnei. Through careful measurement of skulls, analysis of coloration, and documentation of geographic ranges, the author builds a case for their distinction from existing subspecies. The work acknowledges the complexity of classification in an era when beaver populations had been transplanted across North America, potentially altering the genetic landscape. Each subspecies receives detailed treatment: its physical characteristics, its habitat, its subtle differences from neighboring populations. This is science in its patient, exacting form, a small but genuine contribution to how we understand mammalian diversity.