Ibero-Caucasian languages

Ibero-Caucasian (or Iberian-Caucasian) is a proposed language family suggested by Georgian linguist Arnold Chikobava of the three language families that are specific to the Caucasus mountains region of Eurasia. The Ibero-Caucasian phylum would also include three extinct languages: Hattic, connected by some linguists to the Northwest (Circassian) family, and Hurrian and Urartian, connected to the Northeast (Nakh–Dagestanian) family as Alarodian languages.

Source: Wikipedia — Ibero-Caucasian languages (CC BY-SA 4.0)