Where was the unclassified language of the people who were sometimes referred to as Cocos heard?
Karankawa people Karankawa (also Karankawan, Comanches, Cocos, and called in their language Auia) are a tribe of Native Americans, now a restored nation, who played a pivotal part in early Texas history.
Mato Grosso Arára language Mato Grosso Arára (also disambiguated as "Arara do Beiradão" or "Arara do Rio Branco", and also known as "Koaiá ~ Koayá") is an extinct unclassified language of Brazil. The ethnic population that spoke the language numbers about 150.