Willem F. H. Adelaar and Pieter C. Muysken 2004
Betoi-Jirara, an extinct language of present-day Venezuela, is missing from E16/E17/E18/E19/E20/E21/E22/E23/E24/E25/E26/E27 ( Hervás y Panduro, Lorenzo 1971 [1799] , Raoul Zamponi 2003 ).