"Additional Records and Extensions of Known Ranges of Mammals from Utah" by Stephen D. Durrant, M. Raymond Lee, and Richard M. Hansen is a scientific publication written in the mid-20th century. This work primarily focuses on the documentation and analysis of mammal distribution in Utah, presenting new findings and expanding the known ranges of various mammal species within the state. The text details the discovery and identification of several mammalian species previously unrecorded in Utah and updates the geographic ranges of various others. The authors provide specific locations and conditions under which specimens were found, outlining the significance of these findings in the context of Utah's ecological studies. Among the species explored are the Dusky Shrew, Water Shrew, various bats, and the Yellow-bellied Marmot, with each entry including notes on previously existing knowledge, the relevance of the findings, and implications for understanding wildlife distribution across diverse habitats. The publication emphasizes the importance of continued research and monitoring of wildlife as a means to enhance conservation efforts and ecological knowledge. (This is an automatically generated summary.)