 However, Tuparí was one of the first languages and cultures of Rondônia studied in detail.This research was due to the Swiss ethnographer and explorer, Franz Caspar, who took many field-notes in the 1940s and the 1950s, as he lived within the community (Singerman, 2018).He is known in Tuparí as "Toto Amsi Tàn" (the long-nosed grandfather).