Fauna of New Guinea Guinea. However, the tree-kangaroos, which are mostly endemic to New Guinea, are different in appearance and behaviour. As suggested by their name, they are arboreal. They have long, thick tails which enable them to balance in trees, and large, strong forearms for gripping to trees. Two species of tree kangaroos are also found in Australia, they are believed to have migrated from New Guinea during the Pleistocene. The cuscus, family Phalangeridae, are a family of marsupials closely related to the possums of Australia. The cuscus have evolved in New Guinea, and are found throughout the island. Most species are dark
New Guinea has failed. See Religion in Papua New Guinea. New Guinea New Guinea (; ; ; , historically, "") is a large island off the continent of Australia. It is the world's second-largest, after Greenland, covering a land area of , and the largest wholly or partly within the Southern Hemisphere and Oceania. The eastern half of the island is the major land mass of the independent state of Papua New Guinea. The western half, referred to as either Western New Guinea or West Papua, has been administered by Indonesia since 1962 and comprises the provinces of Papua and West Papua.