Pre-contact distribution of the Siouan-Catawban languages
Siouan-Catawban (also Catawban-Siouan, Siouan) is a language family of North America that is located primarily in the Great Plains of North America with a few outlier languages in the east.
Some authors call this family simply Siouan. Other writers favor the name Siouan-Catawaban so that Catawban is clearly indicated as a separate branch of the family and not under "Siouan Proper".
Quapaw, Saponi, Biloxi, Ofo, Woccon, and Catawba are now extinct.
External relations
The Yuchi language may be the closest relative of Sioux-Catawban, but this has not been verified. Numerous attempts to link these languages with the Caddoan and Iroquoian languages in a Macro-Siouan language family are suggestive but remain hypothetical.
Parks, Douglas R.; & Rankin, Robert L. (2001). The Siouan languages. In R. J. DeMallie (Ed.), Handbook of North American Indians: Plains (Vol. 13, Part 1, pp. 94-114). W. C. Sturtevant (Gen. Ed.). Washington, D.C.: Smithsonian Institution. ISBN 0-16-050400-7.