Maipure language
Maipure is an extinct language once spoken along the Ventuari, Sipapo, and Autana rivers of Amazonas and, as a lingua franca, in the Upper Orinoco region. It became extinct around the end of the eighteenth century. Raoul Zamponi provided a grammatical sketch of the language and furnished a classified word list, based on all of its extant eighteenth century material. It is historically important in that it formed the cornerstone of the recognition of the Maipurean (Arawakan) language family in 1783, along with the Moxo languages.