A skull resting in a Danish museum for over a century has finally been heard. Paleontologists have determined that a fossilized specimen collected in 19th-century Brazil belongs to an entirely new species of glyptodont — a massive, armored Pleistocene herbivore — named Glyptotherium deuterophractum, which roamed South America between 60,000 and 17,000 years ago. The discovery is a reminder that scientific knowledge is not only found in the field, but in the quiet archives of institutions where old assumptions have long gone unquestioned.