Robert Blust considers them to form a primary branch within the Austronesian language family, However, Paul Jen-kuei Li groups them into the Northern Formosan branch, which includes the Northwestern Formosan languages.
Li (1981) and Li (1982) classify the Atayalic languages and dialects as follows:[1] The Proto-Atayalic language was reconstructed by Taiwanese linguist Paul Jen-kuei Li in 1981.
[1] Proto-Atayalic had final voiced stops, which are preserved in the Mayrinax dialect of Cʔuliʔ Atayal.
However, they are now lost in many dialects of Atayal, Seediq, and also Pazeh (Blust 2009:615).
This article about Formosan languages is a stub.