Otarocyon ("large eared dog") is an extinct genus of the Borophaginae subfamily of canids native to North America. It lived during the Oligocene epoch, about 33.3—20.6 Ma (million years ago). Fossils have been found only in Montana, Wyoming, and South Dakota.
Otarocyon ("large eared dog") is an extinct genus of the Borophaginae subfamily of canids native to North America. It lived during the Oligocene epoch, about 33.3—20.6 Ma (million years ago). Fossils have been found only in Montana, Wyoming, and South Dakota.
Otarocyon was a small borophagine characterized by a short, broad skull, a specialized middle ear, simple, tall premolar teeth, and molars that are incipiently adapted to a hypocarnivorous diet. Despite its Oligocene age, the skull of Otarocyon shows several striking similarities to the living fennec fox, particularly in the structure of its middle ear. The similarities are probably convergent, but they suggest that Otarocyon may have been similar in its appearance and habits.
Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).