The TalodiâÂÂHeiban languages are a proposed branch of the hypothetical NigerâÂÂCongo family, spoken in the Nuba Mountains of Sudan. The Talodi and Heiban languages are thought to be distantly related by Dimmendaal, though Glottolog 4.4 does not accept the unity of TalodiâÂÂHeiban pending further evidence.
Roger Blench (2016) notes that the Talodi and Heiban branches share many typological similarities, but few lexical similarities. Blench (2016) considers Talodi and Heiban to each be separate, independent Niger-Congo branches that had later converged due to mutual contact.
Talodi and Heiban had each constituted a group of the Kordofanian branch of NigerâÂÂCongo that was posited by Joseph Greenberg (1963); Talodi has also been called TalodiâÂÂMasakin, and Heiban has also been called Koalib or KoalibâÂÂMoro. Roger Blench notes that the Talodi and Heiban families have the noun-class systems characteristic of the AtlanticâÂÂCongo core of NigerâÂÂCongo, but that the Katla languages (another putative branch of Kordofanian) 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 the Kordofanian languages do not form a genealogical group, but that TalodiâÂÂHeiban is core NigerâÂÂCongo, whereas Katla and Rashad form a peripheral branch (or perhaps branches) along the lines of Mande. The Kadu languages may be Nilo-Saharan.
Lafofa (Tegem), sometimes classified as a divergent Talodi language, has a different set of cognates with other NigerâÂÂCongo and has been placed in its own branch of NigerâÂÂCongo.
Norton & Alaki (2015: 76, 126) classify the Talodi languages as follows. Proto-Talodi, Proto-Lumun-Torona, and Proto-Narrow Talodi have also been reconstructed by Norton & Alaki (2015).
Lexical correspondences between Proto-Heiban and Proto-Talodi according to Blench (2016):
Noun class prefix comparison between Proto-Heiban and Proto-Talodi according to Blench (2016):