The Kordofanian languages are a geographic grouping of six language families spoken in the Nuba Mountains of the Kurdufan, Sudan. In 1963 Joseph Greenberg added them to the Niger–Congo family, creating his Niger–Kordofanian proposal. The Kordofanian languages have not been shown to be more distantly related than other branches of Niger–Congo, however, nor have they been shown to constitute a valid group. Today the Kadu languages are excluded and the others usually included in Niger–Congo proper.
Roger Blench notes that the Talodi and Heiban families have the noun class systems characteristic of the Atlantic–Congo core of Niger–Congo, but that the two Katla languages have no trace of ever having had such a system, whereas the Kadu languages and some of the Rashad languages appear to have acquired noun classes as part of a Sprachbund rather than having inherited them. He concludes that Talodi and Heiban are core Niger–Congo whereas Katla and Rashad form a peripheral branch along the lines of Mande.
Lafofa (Tegem) was for a time classified with Talodi, but appears to be a separate branch of Niger–Congo.
The number of Rashad languages, also called Tegali–Tagoi, varies among descriptions, from two (Williamson & Blench 2000), three (Ethnologue), to eight (Blench ms). Tagoi has a noun-class system like the Atlantic–Congo languages—apparently borrowed,—while Tegali does not.
The two Katla languages have no trace of ever having had a Niger–Congo-type noun-class system.
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