''Euryoryzomys'' is a

genus Genus ( plural genera ) is a taxonomic rank used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In the hierarchy of biological classification, genus com ...

rodent Rodents (from Latin , 'to gnaw') are mammals of the order Rodentia (), which are characterized by a single pair of continuously growing incisors in each of the upper and lower jaws. About 40% of all mammal species are rodents. They are na ...

s in the tribe

Oryzomyini Oryzomyini is a tribe of rodents in the subfamily Sigmodontinae of the family Cricetidae. It includes about 120 species in about thirty genera,Weksler et al., 2006, table 1 distributed from the eastern United States to the southernmost parts of S ...

of family

Cricetidae The Cricetidae are a family of rodents in the large and complex superfamily Muroidea. It includes true hamsters, voles, lemmings, muskrats, and New World rats and mice. At almost 608 species, it is the second-largest family of mammals, and has m ...

. It includes six species, which are distributed in South America. Until 2006, its members were included in the genus ''

Oryzomys ''Oryzomys'' is a genus of semiaquatic rodents in the tribe Oryzomyini living in southern North America and far northern South America. It includes eight species, two of which—the marsh rice rat (''O. palustris'') of the United States and ...

'', but they are not closely related to the

type species In zoological nomenclature, a type species (''species typica'') is the species name with which the name of a genus or subgenus is considered to be permanently taxonomically associated, i.e., the species that contains the biological type specimen ...

of that genus, and therefore they were placed in a new genus. They are most closely related to genera like ''

Hylaeamys ''Hylaeamys'' is a genus of South American oryzomyine rodents found principally in humid forested areas east of the Andes. The species in this genus have historically been placed in ''Oryzomys''. They are most closely related to ''Euryoryzomys'', ...

'' and ''

Transandinomys ''Transandinomys'' is a genus of rodents in the tribe Oryzomyini of family Cricetidae. It includes two species—'' T. bolivaris'' and '' T. talamancae''—found in forests from Honduras in Central America south and east to southwester ...

''; many members of these genera were previously placed in a single species, known as ''Oryzomys capito''. The genus name, ''Euryoryzomys'', combines the name "''Oryzomys''" with the

Ancient Greek Ancient Greek includes the forms of the Greek language used in ancient Greece and the ancient world from around 1500 BC to 300 BC. It is often roughly divided into the following periods: Mycenaean Greek (), Dark Ages (), the Archaic peri ...

word ''eurus'' "broad", referring to the broad range in distribution of the genus. It includes the following species: * ''

Euryoryzomys emmonsae ''Euryoryzomys emmonsae'', also known as Emmons' rice rat or Emmons' oryzomys, is a rodent from the Amazon rainforest of Brazil in the genus ''Euryoryzomys'' of the family Cricetidae. Initially misidentified as '' E. macconnelli'' or '' E.&n ...

'' (Musser, Carleton, Brothers & Gardner, 1998) * ''

Euryoryzomys lamia ''Euryoryzomys lamia'', also known as the buffy-sided oryzomysMusser and Carleton, 2005 or monster rice rat, is a species of rodent in the family Cricetidae. It is found only in central Brazil, where it lives in forest enclaves within the cerrado ...

'' (Thomas, 1901) * '' Euryoryzomys legatus'' (Thomas, 1925) * '' Euryoryzomys macconnelli'' (Thomas, 1910) * ''

Euryoryzomys nitidus ''Euryoryzomys nitidus'', also known as the elegant oryzomys or elegant rice rat, is a rodent species in the family Cricetidae. Previously it was known as ''Oryzomys nitidus'', but it is not closely related to ''Oryzomys'' as that genus is now co ...

'' (Thomas, 1884) * ''

Euryoryzomys russatus ''Euryoryzomys russatus'', also known as the russet oryzomys, russet rice rat, or big-headed rice rat, is a species of rodent in the family Cricetidae. It is a member of the genus ''Euryoryzomys'', which was split off from ''Oryzomys'' in 2006. I ...

'' (Wagner, 1848)

Literature cited

*Musser, G.G. and Carleton, M.D. 2005. Superfamily Muroidea. Pp. 894–1531 in Wilson, D.E. and Reeder, D.M. (eds.). Mammal Species of the World: a taxonomic and geographic reference. 3rd ed. Baltimore: The Johns Hopkins University Press, 2 vols., 2142 pp. * Rodent genera Taxa named by Marcelo Weksler Taxa named by Alexandre Reis Percequillo {{Sigmodontinae-stub