Dené–Caucasian is a proposed language family that includes the Sino-Tibetan, North Caucasian, Na-Dené, and Yeniseian language families and the Basque and Burushaski languages.
http://upload.wikimedia.org/wikipedi...-Caucasian.JPG
http://ehl.santafe.edu/maps/Dene-Caucasian.gif