Zyzomys is a genus of rodents with unusually thick, long tails. Five species of the genus are known in Australia, where they are called rock rats or thick-tailed rats. The genus was classified by Michael Rogers Oldfield Thomas in 1909.
Papagomys is a genus of very large rats in the tribe Rattini of the subfamily Murinae. It contains two species, which are known only from the Indonesian island of Flores:
Oryzomys nelsoni is an extinct rodent of María Madre Island, Nayarit, Mexico. Within the genus Oryzomys of the family Cricetidae, it may have been most closely related to the mainland species O. albiventer. Since its first description in 1898, most authors have regarded it as a distinct species, but it has also been classified as a mere subspecies of the marsh rice rat (O. palustris).
Nesoryzomys darwini, also known as Darwin's nesoryzomys or Darwin's Galápagos mouse, is a species of rodent in the genus Nesoryzomys that lived on Santa Cruz Island in the Galápagos Islands. It was probably nocturnal and inhabited burrows or rock crevices under bushes. Only four specimens exist, collected by Frank Wonder between 12 and 16 January 1929. This extinction may have been caused by competition and disease created by the introduction of nonnative brown and black rats.
Castorimorpha is the suborder of rodents containing the beavers, the pocket gophers, and the kangaroo rats and kangaroo mice.
The Togo mouse, also known as Büttner's African forest mouse or the groove-toothed forest mouse, is a unique muroid rodent known from only two specimens taken from near the type locality of Bismarckburg, near Yege, Togo, in 1890. Its genus is monotypic.
Oecomys concolor, also known as the unicolored oecomys, unicolored rice rat, or unicolored arboreal rice rat, is a species of rodent in the genus Oecomys of family Cricetidae. It is found in tropical rainforest in the Amazon biome, but its range is poorly documented; it has been recorded in northwestern Brazil, southeastern Colombia, and southern Venezuela.
The mamore arboreal rice rat,, also known as the Mamore oecomys is an arboreal species of rodent in the genus Oecomys of family Cricetidae. Its distribution extends over much of Bolivia and into nearby Brazil and Paraguay. Although Oecomys has been recorded from Argentina, it is uncertain whether those records represent O. mamorae. It is found in a variety of habitats at elevations from 200 to 2100 m, where it feeds on fruit and green seeds.
Oecomys is a genus of rodent within the tribe Oryzomyini of family Cricetidae. It contains about 17 species, which live in trees and are distributed across forested parts of South America, extending into Panama and Trinidad.
Nesoryzomys indefessus, also known as the Santa Cruz nesoryzomys or Indefatigable Galápagos mouse, is a rodent of the genus Nesoryzomys of family Cricetidae from Galápagos Islands of Ecuador. It contains two subspecies: one formerly lived on Santa Cruz Island, but is now extinct, probably due to the introduction of black rats; and another that is still alive on Fernandina Island. The two are sometimes considered to be different species.
Brachytarsomys is a genus of rodent in the family Nesomyidae. It contains the following species:
Leporillus is a genus of rodent in the family Muridae endemic to Australia. It contains the following species:
Melanomys zunigae, also known as Zuniga's melanomys or Zuniga's dark rice rat, is a species of rodent in the genus Melanomys of family Cricetidae. Known only from a small region of coastal Peru, it is listed as "critically endangered" by the IUCN and may even be extinct.
Nesoryzomys indefessus narboroughi is a subspecies of Nesoryzomys indefessus, a rodent in the genus Nesoryzomys, from Fernandina Island in the Galápagos Islands. The only other subspecies occurred on Indefatigable Island, but is now extinct. Some consider the two to be distinct species, in which case the Fernandina form would be Nesoryzomys narboroughi. Another, larger, Nesoryzomys is also found on Fernandina—Nesoryzomys fernandinae.
Nesoryzomys swarthi, also known as the Santiago nesoryzomys or Santiago Galápagos mouse, is a species of rodent in the genus Nesoryzomys of family Cricetidae. It is found only on Santiago in the Galápagos Islands. Its natural habitat is subtropical or tropical dry shrubland.
Aegialomys galapagoensis, also known as the Galápagos rice rat or Galápagos oryzomys, is a species of rodent in the family Cricetidae from the Galápagos Islands.
Solomys is a genus of rodent in the family Muridae. These large rats, which are all seriously threatened, are native to the Solomon Islands.
Neodon is a genus of rodent in the family Cricetidae. Species within Neodon are classified as relics of the Pleistocene epoch because the occlusal patterns resemble the extinct Allophaiomys. The genus Neodon contains the following species:
Megaoryzomys curioi, also known as the Galápagos giant rat, is an extinct species of sigmodontine rodent, known only from Santa Cruz Island in the Galápagos Islands. It likely met its demise when European settlers introduced invasive species to the island. It is the only species in the genus Megaoryzomys. Its relationships are currently unclear; it has been placed in both Oryzomyini and Thomasomyini in the past.
The southeastern xanthurus rat, is a rodent of the genus Rattus.
