The extinct
Palta language was classified as Chicham by
Jacinto Jijón y Caamaño about 1940 and was followed by
Čestmír Loukotka, but Kaufman (1994) states that there is "little resemblance". However, only 4 words are known. The most promising external connections are with the
Cahuapanan languages and perhaps a few other language isolates in proposals variously called
Jívaro-Cahuapana (Hívaro-Kawapánan) (
Jorge Suárez and others) or
Macro-Jibaro or
Macro-Andean (
Morris Swadesh and others, with Cahuapanan,
Urarina,
Puelche, and maybe
Huarpe). The
unclassified language
Candoshi has also been linked to Chicham, as David Payne (1981) provides reconstructions for Proto-Shuar as well as Proto-Shuar-Candoshi. However, more recently, linguists have searched elsewhere for Candoshi's relatives. ==Language contact==