Yam languages

The name Morehead and Upper Maro River, or Morehead–Maro, refers to the area around the Morehead and Maro rivers. Most of the languages are found between these rivers, but the Nambu subgroup are spoken east of the Morehead. Evans (2012) refers to the family instead with the more compact name Yam. This name is motivated by a number of linguistic and cultural items of significance: yam (and cognates) means "custom, tradition"; yəm (and cognates) means "is"; and yam tubers are the local staple and of central cultural importance. ==External relationships==

Ross (2005) tentatively includes the Yam languages in the proposed Trans-Fly – Bulaka River family. More recently (Evans 2012) has argued that this is not justified and more data has to be gathered. Evans (2018) classifies the Pahoturi River languages as an independent language family. Yam languages have also been in intensive contact with Marind and Suki speakers, who had historically expanded into Yam-speaking territories via headhunting raids and other expansionary migrations. ==Classification==

Internal classification of the Yam languages: • Yei • Tonda languages (a dialect chain) • Nambu languages (a dialect chain) Wichmann (2013) did not find a connection between the branches in his automated comparison. ==Languages==

Yam languages are spoken by up to 3,000 people on both sides of the border in Papua New Guinea and Indonesia. In Papua New Guinea, Yam languages are spoken in Morehead Rural LLG, Western Province. In Papua, Indonesia, Yam languages are spoken in Merauke Regency. Geographical coordinates are also provided for some villages. : See also: Districts of Papua (Indonesian Wikipedia) ==Pronouns==

The pronouns Ross (2005) reconstructs for the family are, ;Proto-Yam (Proto–Morehead – Upper Maro) : ==Typology==

Many Yam languages display vowel harmony, including in Nambu and Tonda languages. ==Vocabulary comparison==

The following basic vocabulary words are from McElhanon & Voorhoeve (1970) and Voorhoeve (1975), as cited in the Trans-New Guinea database. The words cited constitute translation equivalents, whether they are cognate (e.g. tor, ter for “tooth”) or not (e.g. sento, yarmaker for “bird”). : ==Further reading==