Iñapari language
Iñapari is a critically endangered indigenous South American language spoken by just four people in Perú along the Las Piedras river near the mouth of the Sabaluyoq river. The language is already extinct in neighboring Bolivia. All four remaining speakers are bilingual in Spanish and none have any children, which will likely lead to its extinction once the speakers die. The Iñapari language currently has a published dictionary.
The Pacaguara dialect described by Mercier was at least ethnically distinct.
