"Mammals from Tamaulipas, Mexico" by Rollin H. Baker is a scientific publication written in the early 20th century, specifically in the early 1950s. This work primarily focuses on the variety of mammalian species found in the Tamaulipas region of northeastern Mexico, an area characterized by diverse ecosystems influenced by both Nearctic and Neotropical fauna. The book documents the findings from a collection of mammals acquired during fieldwork, contributing to the relatively under-researched understanding of the region’s wildlife. The content of the book includes comprehensive descriptions of several species of mammals collected in Tamaulipas, including details regarding their habitats, physical characteristics, and behaviors. Baker provides insights into previously unrecorded species in the area, highlighting the significance of discoveries such as the brown-bellied wood mouse and notes on the distribution and characteristics of various rodent species. Each chapter meticulously catalogs the specimens examined, emphasizing the ecological importance of the mammals in their habitats along the Sierra Madre Oriental. Overall, the publication serves as a foundational resource for further studies of the region's biology and ecology. (This is an automatically generated summary.)