Pleistocene Bats from San Josecito Cave, Nuevo Leon, Mexico

The study examines 89 bat crania and rami recovered from San Josecito Cave, Mexico, assigning material to three families and five genera, providing measurements, illustrations, and specimen catalog numbers. It distinguishes Pleistocene-only taxa from Recent species, describes a new vampire-bat species characterized by larger, heavier skull and dental proportions, and compares fossil morphology with living relatives such as long-nosed and vesper bats. The author evaluates diagnostic characters including rostral and braincase shape, dentition, and palatal and zygomatic features, and interprets the assemblage as probably late Pleistocene in age while noting taxonomic implications.