|
Cryptonanus
''Cryptonanus'' is a genus of opossums from South America. It includes five species found from Bolivia to Uruguay and eastern Brazil, one of which is now extinct. Although the first species were discovered in 1931, the genus was not recognized as distinct from ''Gracilinanus'' until 2005. It includes small opossums with generally grayish, sometimes reddish, fur that are mainly distinguished from other opossums by characters of the skull. Taxonomy Species of ''Cryptonanus'' were first described in 1931 by George Henry Hamilton Tate,Voss et al., 2005, p. 5 who described ''Marmosa microtarsus guahybae'' (now '' Cryptonanus guahybae'') as a subspecies of ''Marmosa microtarsus'' (now ''Gracilinanus microtarsus''), ''Marmosa agilis chacoensis'' (now '' Cryptonanus chacoensis'') as a subspecies of ''Marmosa agilis'' (now '' Gracilinanus agilis''),Tate, 1931, p. 10 and ''Marmosa unduaviensis'' (now '' Cryptonanus unduaviensis'') as a separate species.Tate, 1931, p. 11 In 19 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cryptonanus
''Cryptonanus'' is a genus of opossums from South America. It includes five species found from Bolivia to Uruguay and eastern Brazil, one of which is now extinct. Although the first species were discovered in 1931, the genus was not recognized as distinct from ''Gracilinanus'' until 2005. It includes small opossums with generally grayish, sometimes reddish, fur that are mainly distinguished from other opossums by characters of the skull. Taxonomy Species of ''Cryptonanus'' were first described in 1931 by George Henry Hamilton Tate,Voss et al., 2005, p. 5 who described ''Marmosa microtarsus guahybae'' (now '' Cryptonanus guahybae'') as a subspecies of ''Marmosa microtarsus'' (now ''Gracilinanus microtarsus''), ''Marmosa agilis chacoensis'' (now '' Cryptonanus chacoensis'') as a subspecies of ''Marmosa agilis'' (now '' Gracilinanus agilis''),Tate, 1931, p. 10 and ''Marmosa unduaviensis'' (now '' Cryptonanus unduaviensis'') as a separate species.Tate, 1931, p. 11 In 19 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Opossum
Opossums () are members of the marsupial order Didelphimorphia () endemic to the Americas. The largest order of marsupials in the Western Hemisphere, it comprises 93 species in 18 genera. Opossums originated in South America and entered North America in the Great American Interchange following the connection of North and South America. The Virginia opossum is the only species found in the United States and Canada. It is often simply referred to as an opossum, and in North America it is commonly referred to as a possum (; sometimes rendered as ''possum'' in written form to indicate the dropped "o"). Possums should not be confused with the Australasian arboreal marsupials of suborder Phalangeriformes that are also called possums because of their resemblance to the Didelphimorphia. The opossum is typically a nonaggressive animal. Etymology The word ''opossum'' is borrowed from the Powhatan language and was first recorded between 1607 and 1611 by John Smith (as ''opassom'') ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cryptonanus Unduaviensis
The Unduavi gracile opossum (''Cryptonanus unduaviensis'') is a species of opossum in the family Didelphidae. It is native to northern Bolivia, where it has been found in seasonally flooded grassland Flooded grasslands and savannas is a terrestrial biome of the WWF biogeographical system, consisting of large expanses or complexes of flooded grasslands. These areas support numerous plants and animals adapted to the unique hydrologic regimes .... Some of the specimens recognized by Voss ''et al.'' as belonging to this species were previously classified as the ''unduaviensis'' or ''buenavistae'' subspecies of '' Gracilinanus agilis. References * Opossums Endemic fauna of Bolivia Marsupials of South America Mammals of Bolivia Mammals described in 1931 {{marsupial-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cryptonanus Agricolai
Agricola's gracile opossum (''Cryptonanus agricolai'') is a species of opossum in the family Didelphidae endemic to eastern Brazil. Its habitat is the caatinga and cerrado The ''Cerrado'' (, ) is a vast ecoregion of tropical savanna in eastern Brazil, particularly in the states of Goiás, Mato Grosso do Sul, Mato Grosso, Tocantins, Minas Gerais, and the Federal District. The core areas of the Cerrado biome are t .... While its conservation status has not been determined, expansion of agricultural activities is leading to loss of some of its habitat. There are several protected areas in the species' range but it has not been collected from these areas. The species is named after Brazilian physician Ernani Agricola. References Opossums Mammals described in 1943 Mammals of Brazil Endemic fauna of Brazil {{marsupial-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cryptonanus Guahybae
The Guahiba gracile opossum (''Cryptonanus guahybae'') is a species of opossum in the family Didelphidae. It is endemic to southern Brazil, where it is known only from three islands, Guahiba, São Lourenço, and Taquara, in the state of Rio Grande do Sul. The poorly studied species is presumed to inhabit subtropical forests, and thus to be threatened by deforestation Deforestation or forest clearance is the removal of a forest or stand of trees from land that is then converted to non-forest use. Deforestation can involve conversion of forest land to farms, ranches, or urban use. The most concentrated d .... References * * Opossums Endemic fauna of Brazil Environment of Rio Grande do Sul Marsupials of South America Mammals of Brazil Mammals described in 1931 {{marsupial-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cryptonanus Chacoensis
The chacoan gracile opossum (''Cryptonanus chacoensis'') is a species of opossum in the family Didelphidae. It is native to Argentina, Brazil and Paraguay. Its habitat is seasonally flooded grasslands and forests in and near the Gran Chaco The Gran Chaco or Dry Chaco is a sparsely populated, hot and semiarid lowland natural region of the Río de la Plata basin, divided among eastern Bolivia, western Paraguay, northern Argentina, and a portion of the Brazilian states of Mato Gro .... References * Opossums Marsupials of South America Marsupials of Argentina Mammals of Brazil Mammals of Paraguay Gran Chaco Mammals described in 1931 {{marsupial-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cryptonanus Ignitus
The red-bellied gracile opossum (''Cryptonanus ignitus'') is an extinct species of opossum that was native to Jujuy Province in northwest Argentina Argentina (), officially the Argentine Republic ( es, link=no, República Argentina), is a country in the southern half of South America. Argentina covers an area of , making it the second-largest country in South America after Brazil, th .... Its forest habitat has been destroyed, and it was last seen in 1962. References * Opossums Endemic fauna of Argentina Marsupials of Argentina Extinct marsupials Extinct mammals of South America Mammal extinctions since 1500 Mammals described in 2002 {{marsupial-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Didelphinae
The Didelphinae are a subfamily of opossums consisting of 15 genera and 123 species. Specimens have been collected throughout the Americas, but are predominant in South and Central America. Some sources call this subfamily the "American opossums", while others use that term for the whole family of opossums, Didelphidae. The term may be redundant, though, since all opossums are native to the Americas, while their distant Australian taxonomic relatives, in the suborder Phalangeriformes are referred to as possums in Australia. Classification * Subfamily Didelphinae ** Genus ''Chacodelphys'' *** '' C. formosa'' - Chacoan pygmy opossum ** Genus ''Chironectes'' *** '' C. minimus'' - water opossum ** Genus ''Cryptonanus'' *** '' C. agricolai'' - Agricola's gracile opossum *** '' C. chacoensis'' - Chacoan gracile opossum *** '' C. guahybae'' - Guahiba gracile opossum *** †'' C. ignitus'' - red-bellied gracile opossum *** '' C. unduaviensis'' - Unduavi gracile opossum ** Genus ''Di ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gracilinanus
''Gracilinanus'' is a genus of opossum in the family Didelphidae. It was separated from the genus ''Marmosa'' in 1989, and has since had the genera ''Cryptonanus'', ''Chacodelphys'', and ''Hyladelphys'' removed from it. Physical description Gracile mouse opossums, excluding the fat-tailed mouse opossum, in general, have a prehensile tail that is thin and very long. The tails of mouse opossums are naked."Mouse opossum". Encyclopædia Britannica. Encyclopædia Britannica Online Academic Edition. Encyclopædia Britannica Inc., 2012. Web 3 November 2012. Mouse opossums have ears that are, both, large and naked. General opossums, including ''Gracilinanus'' species, have noses that are pointed. Another general characteristic that mouse opossum have are mammary glands. Each member of the ''Gracilinanus'' species has a dark ring that is found around each eye."Mammals." EDGE of Existence. Web. 28 November 2012. . The species ''G. microtarsus'' has red-brown fur on the top of the body ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Goiás
Goiás () is a Brazilian state located in the Center-West region. Goiás borders the Federal District and the states of (from north clockwise) Tocantins, Bahia, Minas Gerais, Mato Grosso do Sul and Mato Grosso. The state capital is Goiânia. With 7.2 million inhabitants, Goiás is the most populous state in the Center-West and the 11th most populous in the country. It has the ninth largest economy among Brazilian federative units. In Brazil's geoeconomic division, Goiás belongs to the Centro-Sul (Center-South), being the northernmost state of the southern portion of Brazil. The state has 3.3% of the Brazilian population and is responsible for 2.7% of the Brazilian GDP. The history of Goiás dates back to the beginning of the 18th century, with the arrival of pioneers from São Paulo. The Rio Vermelho region was the first to be occupied, where Vila Boa (later renamed Goiás) was founded. The development and settlement of the state took place, in a more intensified way, start ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ceará
Ceará (, pronounced locally as or ) is one of the 26 states of Brazil, located in the northeastern part of the country, on the Atlantic coast. It is the eighth-largest Brazilian State by population and the 17th by area. It is also one of the main tourist destinations in Brazil. The state capital is the city of Fortaleza, the country's fourth most populous city. The state has 4.3% of the Brazilian population and produces 2.1% of the Brazilian GDP. Literally, the name ''Ceará'' means "sings the jandaia". According to José de Alencar, one of the most important writers of Brazil and an authority in Tupi Guaraní, ''Ceará'' means turquoise or green waters. The state is best known for its extensive coastline, with of sand. There are also mountains and valleys producing tropical fruits. To the south, on the border of Paraíba, Pernambuco and Piauí, is the National Forest of Araripe. Geography Ceará has an area of . It is bounded on the north by the Atlantic Ocean, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Foramen Ovale (skull)
The foramen ovale (Latin: oval window) is a hole in the posterior part of the sphenoid bone, posterolateral to the foramen rotundum. It is one of the larger of the several holes (the foramina) in the skull. It transmits the mandibular nerve, a branch of the trigeminal nerve. Structure The foramen ovale is an opening in the greater wing of the sphenoid bone. The foramen ovale is one of two cranial foramina in the greater wing, the other being the foramen spinosum. The foramen ovale is posterolateral to the foramen rotundum and anteromedial to the foramen spinosum. Posterior and medial to the foramen is the opening for the carotid canal. Variation Similar to other foramina, the foramen ovale differs in shape and size throughout the natural life. The earliest perfect ring-shaped formation of the foramen ovale was observed in the 7th fetal month and the latest in 3 years after birth, in a study using over 350 skulls.In a study conducted on 100 skulls, the foramen ovale was d ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
