The following is the entry for this language as it appeared in the 14th edition (2000).
It was superseded by the corresponding entry in the 15th edition (2005). See also the corresponding entry in the current edition of Ethnologue.
SIL code: BSL
ISO 639-2: nic
| Region | Niger State, Chanchaga LGA; Plateau State, Nasarawa LGA. |
| Alternate names | BASA-KADUNA, BASSA-KADUNA, GWADARA BASA, BASA KUTA |
| Classification | Niger-Congo, Atlantic-Congo, Volta-Congo, Benue-Congo, Kainji, Western, Basa. |
| Comments | No fluent speakers left in 1987. The ethnic group speaks Hausa. Extinct. |
