The book "Pleistocene Bats from San Josequito Cave, Nuevo Leon, Mexico" by J. Knox Jones is the result of research into paleontology and the study of bats that lived in the area of Mexico during the Pleistocene era. The book presents the results of archaeological excavations in the caves of San Josequito, where bat fossils were found, their morphological descriptions and classification. The author deeply explores the history and evolution of these animals, as well as the influence of the environment on their life and extinction. This book is a valuable resource for scientists interested in the study of fossil animals and the history of ancient ecosystems.