with a reduced number of premolars and relatively longer molars. Tremarctos floridanus has mandibular condyles raised well above the plane of the teeth, while T. ornatus does not, suggesting T. ornatus potentially possesses a larger gape. The lower jaws of T. floridanus are larger; while the ramus of the mandible is taller in T. floridanus, the relative height of the mandible's coronoid process is the same in both species.

Both species also differ