| Otarocyon Temporal range:
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|---|---|
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| Skull of Otarocyon cooki | |
Scientific classification 
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| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Mammalia |
| Order: | Carnivora |
| Family: | Canidae |
| Subfamily: | †Borophaginae |
| Genus: | †Otarocyon Wang, Tedford, & Taylor, 1999 |
| Type species | |
| †Cynodesmus cooki | |
| Species | |
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| Range of Otarocyon based on fossil distribution | |
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).[1] Fossils have been found only in Montana, Wyoming, and South Dakota.[2]
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.[3]
- ^ PaleoBiology Database: Otarocyon Taxonomy, Species
- ^ Cite error: The named reference
Wang2008was invoked but never defined (see the help page). - ^ Phylogenetic systematics of the Borophaginae (Carnivora, Canidae)