The Lower Mamberamo languages are a recently proposed language family linking two isolates in Stephen Würm's widely used classification of the languages of New Guinea. They are spoken along the lower reaches of the Mamberamo River. Current distribution of Human Language Families Most languages are known to belong to language families. ... A language isolate is a natural language with no demonstrable genealogical (or genetic) relationship with other living languages; that is, one that has not been demonstrated to descend from an ancestor common to any other language. ... The Mamberamo River is a large river in Papua province, Indonesia. ...
The two languages in question are Warenbori and Yoke, also called Pauwi.
Largely tropical, New Guinea has vast mountain ranges such as the Owen Stanley and the Bismarck mts.; Jaya Peak (16,503 ft/5,030 m) in Papua is the highest point.
The lower courses of the large rivers (the Fly, Sepik, Mamberamo, and Purari) are generally swampy, with a few grassy plains.
The island was sighted by the Portuguese explorer Antonio d'Abreu in 1511 and was named for its resemblance to the Guinea coast of W Africa.