The earless water rat is a New Guinea rodent, part of the Hydromys group of the subfamily of Old World rats and mice (Murinae). It is the only species of the genus Crossomys. This species is probably most closely related to Baiyankamys. It is still unclear to which species this group is related. It is one of the most aquatically adapted rodents of the world.
Ernst Mayr's water rat is a species of rodent in the family Muridae, named for evolutionary biologist Ernst Mayr. It is found in the Foja Mountains of Papua Province, Indonesia, and in the mountains of northeastern Papua New Guinea.
The one-toothed shew mouse is a species of rodent in the family Muridae. It is found in West Papua, Indonesia and Papua New Guinea, at elevations from 1,200 to 3,000 m. It is most closely related to Pseudohydromys germani.
The long-nosed mosaic-tailed rat or Papuan lowland paramelomys is a species of rodent in the family Muridae. It is found only in Papua New Guinea.
Lorentz's mosaic-tailed rat is a species of rodent in the family Muridae. It is found in West Papua, Indonesia and Papua New Guinea. The rat is named after Hendrikus Albertus Lorentz, a Dutch explorer who passed through Lorentz National Park on his 1909–10 expedition.
Thomas's mosaic-tailed rat is a species of rodent in the family Muridae. It is found in West Papua, Indonesia and Papua New Guinea.
The lowland mosaic-tailed rat is a species of rodent in the family Muridae. It is found in Indonesia and Papua New Guinea.
The mountain mosaic-tailed rat is a species of rodent in the family Muridae. It is found in West Papua, Indonesia and Papua New Guinea.
The black-tailed mosaic-tailed rat is a species of rodent in the family Muridae. It is endemic to the island of New Guinea.
The northern water rat is an endangered species of rodent in the family Muridae found in the highlands of New Guinea.
The lowland brush mouse is a species of rodent in the family Muridae. It is found in Indonesia on the island of Salawati and on the Vogelkop Peninsula in Papua Province, Indonesia.
The eastern shew mouse is a species of rodent in the family Muridae. It is found only in Papua New Guinea.
The large New Guinea spiny rat is a species of rodent in the family Muridae. It is found in Indonesia, Papua New Guinea, and the Solomon Islands.
Poncelet's giant rat or Poncelet's naked-tailed rat is a species of rodent in the family Muridae. It is found in Papua New Guinea and Solomon Islands.
The moss-forest rat is a species of rodent in the family Muridae. It is found in Indonesia and Papua New Guinea.
The glacier rat is a species of rodent in the family Muridae. It is endemic to the New Guinea Highlands near Puncak Trikora and Puncak Jaya, West Papua, Indonesia. Its altitudinal range is 3,225–4,500 m (10,581–14,764 ft) above sea level.
Van Deusen's rat is a species of rodent in the family Muridae. It is endemic to the mountains of southeast Papua New Guinea.
The slender rat is a species of rodent in the family Muridae. It is found in West Papua, Indonesia and Papua New Guinea.
Dollman's melomys is a species of rodent from the family Muridae. It lives in the eastern highlands of Papua New Guinea at an elevation of at least 1,200 metres (3,900 ft) and on the slopes of Mount Hagen and Mount Sisa. However, it is not found east of the Okapa area. It is an arboreal species occurring in montane secondary and degraded forest, preferring moist tropical environments. Formerly considered to be a subspecies of the black-tailed mosaic-tailed rat, the Dollman's melomys is also often listed as its binomial synonym, Melomys gracilis. The melomys is listed as Least Concern by the IUCN Red List due to its wide range, lack of threats, and tolerance of disturbance.
Pocock's highland rat is a species of rat of the family Muridae. It is native to New Guinea.
