The Koibal dialect is a dialect of the Kamas language or arguably another independent Sayan Samoyed language.

The vocabulary of Koibal is very similar to Kamas proper.

Matthias Castrén concluded that Koibal and Karagas have a Yeniseian substratum, after meeting with speakers who used Yeniseian words in their speech.

Kamas proper distinguishes the alveo-dental and palatal sibilants s, z vs. š, ž, however the Koibal dialect only has s and z.

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