Pleistocene Bats from San Josecito Cave, Nuevo Leon, Mexico

This concise scientific paper explores a remarkable assemblage of fossil bats recovered from San Josecito Cave in Nuevo León, Mexico. The author examines 89 crania and jaw fragments representing three bat families, drawing on material gathered by earlier field parties. By comparing these remains with modern specimens, the study situates the fossils within a late‑Pleistocene context, despite the absence of precise stratigraphic data. The work also outlines the collaborative effort behind the research, acknowledging contributions from several museums and specialists.

Among the highlights, the author confirms the presence of the long‑nosed nectar bat Leptonycteris nivalis, noting subtle size differences from its present‑day relatives. More strikingly, a new species of vampire bat, Desmodus stocki, is described in detail, with measurements that set it apart from the living Desmodus rotundus. The paper offers clear illustrations and comparative tables, providing a valuable reference for paleontologists and bat enthusiasts interested in the region’s ancient wildlife.