The Niger-Kordofanian language family was proposed by Joseph Greenberg in his 1963 book Languages of Africa, originally under the name 'Congo-Kordofanian'. It was the consequence of the addition of Kordofanian as a branch coordinate to the previously established Niger-Congo family. However, the Kordofanian languages have not been demonstrated to be more distantly related than other branches of Niger-Congo, and recent classifications have placed them within that family.

References

• Joseph Greenberg, The Languages of Africa. Indiana Univ. Press (1966).
• John Bendor-Samuel, The Niger-Congo Languages — A classification and description of Africa's largest language family, University Press of America (1989).

Niger-Kordofanian languages

Niger-kordofanische Sprachen