Sepik languageswikipedia
The Sepik languages are a family of some 50 Papuan languages spoken in the Sepik river basin of northern Papua New Guinea, proposed by Donald Laycock in 1965 in a somewhat more limited form than presented here.
SepikMiddle SepikUpper SepikSepik HillSanioLeon[h]ard SchultzeSepik RiverLeonhard Schultze (Walio–Papi)Walio–PapiSepik family

Sepik

SepikSepik RiverSepik art
The Sepik languages are a family of some 50 Papuan languages spoken in the Sepik river basin of northern Papua New Guinea, proposed by Donald Laycock in 1965 in a somewhat more limited form than presented here.
From the headwaters to the mouth, the river flows through at least 12 different Sepik languages, each corresponding to one or more culture regions of related villages that exhibit similar social characteristics.

Ndu languages

NduNdu language family
The most populous are Iatmül's fellow Ndu languages Abelam and Boiken, with about 35 000 speakers apiece.
The Ndu languages are the best known family of the Sepik languages of northern Papua New Guinea.

Papuan languages

Papuan languagePapuanNew Guinea
The Sepik languages are a family of some 50 Papuan languages spoken in the Sepik river basin of northern Papua New Guinea, proposed by Donald Laycock in 1965 in a somewhat more limited form than presented here.

Donald Laycock

Don LaycockLaycockDonald Laycock
The Sepik languages are a family of some 50 Papuan languages spoken in the Sepik river basin of northern Papua New Guinea, proposed by Donald Laycock in 1965 in a somewhat more limited form than presented here.
While more recent work by William A. Foley and Malcolm Ross has cast doubt on a link between the Ramu – Lower Sepik languages and the Sepik languages, the "Sepik subphylum" seems established as a genuine group.

Sepik–Ramu languages

Sepik–RamuNorthSepik–Ramu phylum
The Sepik languages consist of two branches of Kandru's Laycock's Sepik–Ramu proposal, the Sepik subphylum and Leonhard Schultze stock.
The Sepik–Ramu languages are a hypothetical language family of New Guinea linking the Sepik, Ramu, Nor–Pondo (Lower Sepik), Leonhard Schultze (Walio–Papi) and Yuat families, together with the Taiap language isolate, and proposed by Donald Laycock in 1973.

Torricelli languages

Torricelli languageTorricelliWapei
According to Malcolm Ross, the most promising external relationship is not with Ramu, pace Laycock, but with the Torricelli family.
The most promising external relationship for the Torricelli family is the Sepik languages.

Vowel

vowelvowelsvowel height
The Sepik languages, like their Ramu neighbors, appear to have three-vowel systems, that distinguish only vowel height.
Nearly all languages have at least three phonemic vowels, usually as in Classical Arabic and Inuktitut, though Adyghe and many Sepik languages have a vertical vowel system of.

Iatmül language

IatmülIatmulian
The best known Sepik language is Iatmül.

Abelam language

AbelamabtTheir language
The most populous are Iatmül's fellow Ndu languages Abelam and Boiken, with about 35 000 speakers apiece.

Boiken language

Boikenbzf
The most populous are Iatmül's fellow Ndu languages Abelam and Boiken, with about 35 000 speakers apiece.

Ramu languages

RamuRamu languageRamu and Keram Rivers
They were identified as a family by John Z'graggen in 1971, and linked with the Sepik languages by Donald Laycock two years later.

Yerakai language

yraYerakai
Yerakai (Yerekai) is a Sepik language spoken in Sandaun Province, Papua-New Guinea.

Kwoma language

Kwomakmo
Kwoma is a Sepik language of Papua New Guinea.

Kwanga language

Kwangakwj
Kwanga (Gawanga) is a Sepik language spoken in Papua New Guinea.

Papi language

Papippe
Papi (Paupe) is an alleged Sepik language spoken in Sandaun Province, Papua New Guinea.

Suarmin language

SuarminseoDuranmin
Suarmin, or Asabano, is a Sepik language spoken in Sandaun Province, Papua-New Guinea.

Namia language

nnmNamia
Namia (Namie, Nemia) is a Sepik language spoken in Sandaun Province, Papua-New Guinea.

Seim language

simSeim
Seim, or Mende, is a Sepik language of Papua New Guinea.

Bahinemo languages

Bahinemo
They are generally classified among the Sepik Hill languages of the Sepik family.

Bahinemo language

bjhBahinemo
Bahinemo is a Sepik language spoken in East Sepik Province, Papua-New Guinea.

Walio language

wlaWalio
Walio is a Sepik language spoken in East Sepik Province, Papua-New Guinea.

Pei language

ppqPei
Pei (Pai) is a nearly extinct Sepik language spoken in East Sepik Province, Papua-New Guinea.