Tallán
Tallán was a language isolate once spoken in Peru.
An isolate: no relationship to any other known language has been demonstrated.
Tallán is an extinct and poorly attested language of the Piura Region of Peru. It is too poorly known to be definitively classified. It may have a possible connection to neighboring Sechura, termed the Sechura–Catacao languages.
From Wikipedia · Tallán language · CC BY-SA 4.0