Some articles on cotoname:

Coahuiltecan Languages - Language Relationships
... A few words are known from seven different languages Comecrudo, Cotoname, Aranama, Solano, Mamulique, Garza, and Coahuilteco or Pakawa ... found perhaps the last surviving speakers of Coahuiltecan languages 25 Comecrudo, 1 Cotoname, and 2 Pakawa ... with Comecudo, Mamulique, and Garza as related and Coahuilteco and Cotoname possibly related ...