Protobradys
Protobradys is an extinct genus of mammal of unknown affinities from the Early Eocene of Chubut Province, Argentina. It was described in 1902 by prolific Argentine paleontologist Florentino Ameghino on the basis of an isolated left maxilla and an erroneously referred tooth. Ameghino described the genus as the earliest known member of Pilosa, though this assessment has not been supported and later authors believe that it is a Glossary of [scientific naming|nomen vanum] of uncertain affinities within Mammalia.