Ninu iyasoto awon ede Afrika, awon ede Volta-Niger tabi Iwoorun Benue-Kongo tabi Ilaorun Kwa lopojulo ninu awon ede ibatan Atlantiki-Kongo, pelu awon sistemu ikosoto oro-oruko to wopo ninu awon ede awon ede Atlantiki-Kongo.Itokasi  Wolf, Paul Polydoor de (1971) The Noun Class System of Proto-Benue-Congo (Thesis, Leiden University).. 
Titi di odun 1975, idije yii nikan ni wọn o tii ma gba ni ori papa oníkoríko.Ninu alaalẹ́ mejeeje ti won fi n mo idije ti o yanranti, idije French Open yii ni won lero pe o gba agbara julo.itọkasi.. 