Yuki–Wappo languages

The Yuki–Wappo or Yukian languages are a small language family of western California consisting of two distantly related languages, both now extinct.

The Yukian languages may be, along with Chumashan and perhaps languages of southern Baja such as Waikuri, one of the oldest language families established in California, before the arrival of speakers of Penutian, Uto-Aztecan, and perhaps even Hokan languages. All three are spoken in areas with long-established populations of a distinct physical type.