Tonda languages

The Tonda languages form a branch of the Yam language family of southern New Guinea. There are over 10 languages.

Tonda languages share some areal features are shared with the Kolopom languages.

Languages
The Tonda languages are:


 * Tonda / West Morehead River
 * Arammba
 * Central Morehead River: Anta, Kómnzo, Wára, Wérè, Kémä, Kánchá
 * Warta Thuntai
 * Bensbach River
 * Upper Bensbach River
 * Mblafe–Ránmo
 * Ngarna–Rema
 * Nggarna (Sota)
 * Rema
 * Kanum
 * Ngkolmpu: Ngkâlmpw/Ngkontar, Bädi
 * South Kanum: Bârkâli-Smärki, Tämer

Notes (see Evans 2018: 681):
 * Each terminal bullet point lists a different dialect chain.
 * Ránmo is linguistically a dialect of Mblafe, but Ránmo speakers consider their language to be a separate, distinct language.
 * Wérè is linguistically a dialect of Wára, but Wèré speakers consider their language to be a separate, distinct language.

Numeral typology
Tonda languages are unique for their base-6 numeral systems, which likely originated from counting yams (rather than fingers or body parts as with most other languages).