Rocorona, or Ocorono, is an extinct language of Bolivia of the Chapacuran family. It is known only from three short texts, namely the Lord's Prayer, Ave Maria, and Nicene Creed.
Birchall (2013) presents an in-depth analysis of the surviving Rocorona texts from Jesuit missions in Bolivia. The texts were analyzed by Georges de Crequi-Montfort and Paul Rivet (1913).
Rocorona has a 5-vowel system.
Noticeably unusual is the absence of the vowel .
A morpheme-by-morpheme gloss of the Lord's Prayer is given below, from Birchall (2013).