Additional Records and Extensions of Known Mammal Ranges in Utah, by Steven David Durrant, Richard M. Hansen, and M. Raymond Lee, is an important addition to the biological data on Utah's fauna. This book presents new records of mammals that have been discovered in various regions of Utah, as well as information on the range expansion of some already known species. The authors detail the research methodology, provide data on findings, and perform data analysis that is important for understanding changes in the distribution and populations of native mammal species. This book will be a valuable resource for scientists interested in Utah's biodiversity and natural heritage.