The 27 species in the

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 ...

''Marmosa'' are relatively small

Neotropical The Neotropical realm is one of the eight biogeographic realms constituting Earth's land surface. Physically, it includes the tropical terrestrial ecoregions of the Americas and the entire South American temperate zone. Definition In bioge ...

members of the

family Family (from la, familia) is a Social group, group of people related either by consanguinity (by recognized birth) or Affinity (law), affinity (by marriage or other relationship). The purpose of the family is to maintain the well-being of its ...

Didelphidae. This genus is one of three that are known as mouse opossums. The others are ''

Thylamys ''Thylamys'' is a genus of opossums in the family Didelphidae. The premaxillae are rounded rather than pointed. The females lack a pouch. The females' nipples are arranged in two symmetrical rows on the abdomen. All species but ''T. macrurus'' ...

'' (the "fat-tailed mouse opossums") and '' Tlacuatzin'', the grayish mouse opossum. Members of the genus ''

Marmosops ''Marmosops'' is a genus of Neotropical opossums of the family Didelphidae. The genus was originally treated as a subgenus from the genus ''Marmosa'' rather than having their own classification. This was changed in 1989 by Gardner and Crieghto ...

'' used to be called "slender mouse opossums", but are now just called "slender opossums". The thirteen members of the ''Marmosa'' subgenus ''Micoureus'', known as woolly mouse opossums, were formerly considered to be a separate genus, but were moved into ''Marmosa'' in 2009. Based on a comparison of sequences of one mitochondrial and three nuclear genes, three new subgenera, ''Eomarmosa'', ''Exulomarmosa'' and ''Stegomarmosa'', were recognized by Voss ''et al.'' in 2014. ''Eomarmosa'' and ''Exulomarmosa'', as well as ''Marmosa'' and ''Micoureus'', are thought to be

sister taxa In phylogenetics, a sister group or sister taxon, also called an adelphotaxon, comprises the closest relative(s) of another given unit in an evolutionary tree. Definition The expression is most easily illustrated by a cladogram: Taxon A and t ...

, while ''Stegomarmosa'' is viewed as sister to ''Marmosa'' plus ''Micoureus''. ''Exulomarmosa'' is a mostly trans-Andean (west of the

Andes The Andes, Andes Mountains or Andean Mountains (; ) are the longest continental mountain range in the world, forming a continuous highland along the western edge of South America. The range is long, wide (widest between 18°S – 20°S ...

) clade. Subgenus ''Eomarmosa''

Voss Voss () is a municipality and a traditional district in Vestland county, Norway. The administrative center of the municipality is the village of Vossevangen. Other villages include Bolstadøyri, Borstrondi, Evanger, Kvitheim, Mjølfjell, Opphe ...

, Gutierrez, Solari, Rossi & Jansa 2014 *''

Marmosa rubra The red mouse opossum (''Marmosa rubra'') is a South American marsupial of the family Didelphidae. Its range includes eastern Ecuador and Peru , image_flag = Flag of Peru.svg , image_coat = Escudo nacional del Per ...

'' Tate 1931 Subgenus ''Exulomarmosa''

, Gutierrez, Solari, Rossi & Jansa 2014 *''

Marmosa isthmica The Isthmian mouse opossum (''Marmosa isthmica'') is a species of opossum in the family Didelphidae found in Colombia, Ecuador, and Panama.Fiona A. Reid, ''A field guide to the mammals of Central America & Southeast Mexico'' (OUP USA, 2009)p. ...

'' *''

Marmosa mexicana The Mexican mouse opossum (''Marmosa mexicana'') is a species of North American opossum in the family Didelphidae. Description ''Marmosa mexicana'' is a small to moderate-sized reddish-brown marsupial, varying from bright to dull coloration. ...

'' Merriam 1897 *''

Marmosa robinsoni Robinson's mouse opossum (''Marmosa robinsoni'') is a species of opossum in the family Didelphidae. It is found in Belize, Colombia, Ecuador, Grenada, Honduras, Panama, Peru, Trinidad and Tobago, and Venezuela. Robinson's mouse opossums move al ...

'' Bangs 1898 *''

Marmosa simonsi The 27 species in the genus ''Marmosa'' are relatively small Neotropical members of the family Didelphidae. This genus is one of three that are known as mouse opossums. The others are '' Thylamys'' (the "fat-tailed mouse opossums") and '' Tlacua ...

'' *''

Marmosa xerophila The Guajira mouse opossum (''Marmosa xerophila'') is a species of opossum in the family Didelphidae. It is found in Colombia and Venezuela Venezuela (; ), officially the Bolivarian Republic of Venezuela ( es, link=no, República Boliva ...

'' Handley & Gordon 1979 *''

Marmosa zeledoni The 27 species in the genus ''Marmosa'' are relatively small Neotropical members of the family Didelphidae. This genus is one of three that are known as mouse opossums. The others are ''Thylamys'' (the "fat-tailed mouse opossums") and '' Tlacuat ...

'' Subgenus ''Marmosa''

Gray Grey (more common in British English) or gray (more common in American English) is an intermediate color between black and white. It is a neutral or achromatic color, meaning literally that it is "without color", because it can be composed o ...

1821 *''

Marmosa macrotarsus The Quechuan mouse opossum (''Marmosa macrotarsus'') is a South American opossum species of the family Didelphidae. It is known from two areas of montane forest on the eastern slopes of the Andes in Peru, at altitudes from 300 to 2700 m. The ty ...

'' *''

Marmosa murina Linnaeus's mouse opossum (''Marmosa murina''), also known as the common or murine mouse opossum, is a South American marsupial of the family Didelphidae. Range and habitat Its range includes Colombia, Mexico, Venezuela, Trinidad and Tobago, Gu ...

'' (Linnaeus 1758) *''

Marmosa tyleriana Tyler's mouse opossum (''Marmosa tyleriana'') is a South American marsupial of the family Didelphidae. It lives in rainforests of the Guiana Highlands of southern Venezuela at elevations between 1300 and 2200 m. The species has only been found ...

'' Tate 1931 *''

Marmosa waterhousei The 27 species in the genus ''Marmosa'' are relatively small Neotropical members of the family Didelphidae. This genus is one of three that are known as mouse opossums. The others are ''Thylamys'' (the "fat-tailed mouse opossums") and '' Tlacuat ...

'' Subgenus ''Micoureus''

Lesson A lesson or class is a structured period of time where learning is intended to occur. It involves one or more students (also called pupils or learners in some circumstances) being taught by a teacher or instructor. A lesson may be either one ...

1842 * ''

Marmosa alstoni Alston's mouse opossum (''Marmosa alstoni''), also known as Alston's opossum, is a medium-sized pouchless marsupial of the family Didelphidae. It is arboreal and nocturnal, inhabiting forests from Belize to northern Colombia. The main compone ...

'' * ''

Marmosa constantiae The white-bellied woolly mouse opossum (''Marmosa constantiae'') is a small pouchless marsupial of the family Didelphidae. It was formerly assigned to the genus ''Micoureus'', which was made a subgenus of ''Marmosa'' in 2009. The specific epithe ...

'' * ''

Marmosa demerarae The woolly mouse opossum or long-furred woolly mouse opossum (''Marmosa demerarae''), known locally as the ''cuíca'', is a South American marsupial of the family Didelphidae. Its range includes central Colombia, Venezuela, French Guiana, Guyana ...

'' *'' Marmosa germana'' * '' Marmosa paraguayana'' *'' Marmosa jansae'' *'' Ma'''' rmosa limae'' *''

Mar Mar, mar or MAR may refer to: Culture * Mar or Mor, an honorific in Syriac * Earl of Mar, an earldom in Scotland * MAA (singer) (born 1986), Japanese * Marathi language, by ISO 639-2 language code * March, as an abbreviation for the third mon ...

'''' mosa meridae'' *'' M'''' armosa parda'' *''

'''' mosa perplexa'' * '' Marmosa phaea'' *'' Marmosa rappos'''' a'' * ''

Marmosa regina The bare-tailed woolly mouse opossum (''Marmosa regina'') or short-furred woolly mouse opossum is a South American marsupial of the family Didelphidae. Its range includes Brazil, Colombia, Ecuador, Peru, and Bolivia. It is found in tropical rain ...

'' *'' Marmosa rutteri'' *
Marmosa adleri
' Subgenus ''Stegomarmosa''

Pine A pine is any conifer tree or shrub in the genus ''Pinus'' () of the family Pinaceae. ''Pinus'' is the sole genus in the subfamily Pinoideae. The World Flora Online created by the Royal Botanic Gardens, Kew and Missouri Botanical Garden accep ...

1972 *'' Marmosa andersoni'' Pine 1972 *'' Marmosa lepida'' (Thomas 1888)

References

Opossums Marsupial genera Taxa named by John Edward Gray {{marsupial-stub