Urupa (Urupá, Ituarupá) is an extinct
Chapacuran language
The Chapacuran languages are a nearly extinct Native American language family of South America. Almost all Chapacuran languages are extinct, and the four that are extant are moribund, with the exception of Wari'. They are spoken in Rondônia in ...
. Yaru (Yarú, Jarú) was a dialect or a closely related language.
References
Chapacuran languages
Extinct languages of South America
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