Central and South New Guinea languages | Wikipedia audio article
West Bomberai languages | Wikipedia audio article
Ok–Oksapmin languages | Wikipedia audio article
Turama–Kikorian languages | Wikipedia audio article
The West Trans–New Guinea languages are a suggested linguistic linkage of Papuan languages, not well established as a group, proposed by Malcolm Ross in his 2005 classification of the Trans–New Guinea languages. Ross suspects they are an old dialect continuum, because they share numerous features that have not been traced to a single ancestor using comparative historical linguistics. The internal divisions of the languages are also unclear. William A. Foley considers the TNG identity of the Irian Highlands languages at least to be established.