Prohesperocyon
Prohesperocyon ''" is an extinct genus of the first canid endemic to North America appearing during the Late Eocene around 36.6 mya.Prohesperocyon wilsoni was unearthed at the Airstrip site, Presidio County, Texas dating between 36.6—36.5 million years ago. This fossil species bears a combination of features that definitively mark it as a Canidae, including teeth that include the loss of the upper third molar, and the characteristically enlarged bony bulla. Based on what we know about its descendants, Prohesperocyon likely had slightly more elongated limbs than its predecessors, along with toes that were parallel and closely touching, rather than splayed, as in bears.
