Tapocyon is an extinct genus of Miacidae, a family of primitive carnivores. Tapocyon was first discovered in Ventura County, when part of a jaw was found in the 1930s. A representative fossil of Tapocyon robustus was found in Oceanside, California. The animal was about the size of a coyote and is believed to have been a good climber that spent a lot of time in trees.