Proto-Chukotko-Kamchatkan language

Proto-Chukotko-Kamchatkan is the reconstructed common ancestor of the Chukotko-Kamchatkan languages. It is purported to have broken up into the Northern (Chukotian) and Southern (Itelmen) branches around 2000 BCE, when western reindeer herders moved into the Chukotko-Kamchatkans' homeland and its inland people adopted the new lifestyle.