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Octomys Mimax
The mountain viscacha rat or mountain vizcacha rat (''Octomys mimax''), historically viscacha rat or vizcacha rat, is a species of rodent in the family Octodontidae. It is endemic to Argentina. It is the only living species within the genus ''Octomys''. This diploid genus (2n = 56) may be ancestral to the two unusual suspected tetraploid species ''Tympanoctomys barrerae'' and '' Pipanacoctomys aureus''. However, some genetic studies have rejected any polyploidism in mammals as unlikely, and suggests that ''amplification and dispersion of repetitive sequences best explain the large genome size''. Description The mountain viscacha rat is a rat-like animal with a head-body length of about and weighing from . The feet are relatively long, while the tail measures . It has light brown fur with white underparts and a bushy tail. Unusual features of the viscacha rat include greatly enlarged auditory bullae, and the presence of numerous whiskers on the roof of the mouth behind the inc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Viscacha Rat (other)
Viscacha rats are a group of rodents in the family Octodontidae. All species are found in Argentina. They are placed in the following genera: *Genus ''Octomys'' ** ''O. mimax '', mountain viscacha rat, found in the Andes *Genus ''Pipanacoctomys'' ** ''P. aureus'', the golden viscacha rat, found near a salt flat *Genus ''Tympanoctomys'' (4 species, 3 extant), found in desert shrubland near salt flats ** ''T. barrerae'', the plains viscacha rat ** ''T. kirchnerorum'', Kirchner's viscacha rat, ** ''T. loschalchalerosorum'', the Chalchalero viscacha rat ** †''Tympanoctomys cordubensis, T. cordubensis'' {{disambiguation Rodents Animal common name disambiguation pages ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
San Luis Province
San Luis () is a Provinces of Argentina, province of Argentina located near the geographical center of the country (on the 32° South parallel). Neighboring provinces are, from the north clockwise, La Rioja Province (Argentina), La Rioja, Córdoba Province, Argentina, Córdoba, La Pampa Province, La Pampa, Mendoza Province, Mendoza and San Juan Province (Argentina), San Juan. History The city of San Luis, Argentina, San Luis was founded in 1594 by Luis Jufré de Loaysa y Meneses, but was subsequently abandoned. It was refounded by Martín García Óñez de Loyola in 1596 under the name ''San Luis de Loyola''. Since Argentina's return to democratic rule in 1983, in particular, the Rodríguez Saá family (of Peronist affiliation) has occupied the governor's seat. Former governor (now Senator) Adolfo Rodríguez Saá has overseen investment by light manufacturers (mostly food processors and bottling plants) and advances like the construction of Argentina's most extensive express ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Taxa Named By Oldfield Thomas
In biology, a taxon (back-formation from ''taxonomy''; : taxa) is a group of one or more populations of an organism or organisms seen by taxonomists to form a unit. Although neither is required, a taxon is usually known by a particular name and given a particular ranking, especially if and when it is accepted or becomes established. It is very common, however, for taxonomists to remain at odds over what belongs to a taxon and the criteria used for inclusion, especially in the context of rank-based (" Linnaean") nomenclature (much less so under phylogenetic nomenclature). If a taxon is given a formal scientific name, its use is then governed by one of the nomenclature codes specifying which scientific name is correct for a particular grouping. Initial attempts at classifying and ordering organisms (plants and animals) were presumably set forth in prehistoric times by hunter-gatherers, as suggested by the fairly sophisticated folk taxonomies. Much later, Aristotle, and later still ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mammals Described In 1920
A mammal () is a vertebrate animal of the Class (biology), class Mammalia (). Mammals are characterised by the presence of milk-producing mammary glands for feeding their young, a broad neocortex region of the brain, fur or hair, and three Evolution of mammalian auditory ossicles, middle ear bones. These characteristics distinguish them from reptiles and birds, from which their ancestors Genetic divergence, diverged in the Carboniferous Period over 300 million years ago. Around 6,640 Neontology#Extant taxon, extant species of mammals have been described and divided into 27 Order (biology), orders. The study of mammals is called mammalogy. The largest orders of mammals, by number of species, are the rodents, bats, and eulipotyphlans (including hedgehogs, Mole (animal), moles and shrews). The next three are the primates (including humans, monkeys and lemurs), the Artiodactyl, even-toed ungulates (including pigs, camels, and whales), and the Carnivora (including Felidae, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Endemic Fauna Of Argentina
Endemism is the state of a species being found only in a single defined geographic location, such as an island, state, nation, country or other defined zone; organisms that are indigenous to a place are not endemic to it if they are also found elsewhere. For example, the Cape sugarbird is found exclusively in southwestern South Africa and is therefore said to be ''endemic'' to that particular part of the world. An endemic species can also be referred to as an ''endemism'' or, in scientific literature, as an ''endemite''. Similarly, many species found in the Western ghats of India are examples of endemism. Endemism is an important concept in conservation biology for measuring biodiversity in a particular place and evaluating the risk of extinction for species. Endemism is also of interest in evolutionary biology, because it provides clues about how changes in the environment cause species to undergo range shifts (potentially expanding their range into a larger area or becomin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mammals Of Argentina
This is a list of the native mammal species recorded in Argentina. As of January 2020, the list contains 402 mammal species from Argentina, of which one is extinct, seven are critically endangered, seventeen are endangered, sixteen are vulnerable, and thirty are near threatened. The following tags are used to highlight each species' conservation status as assessed by the International Union for Conservation of Nature; those on the left are used here, those in the second column in some other articles: Subclass: Theria Infraclass: Metatheria Superorder: Ameridelphia =Order: Didelphimorphia (common opossums)= Didelphimorphia is the order of common opossums of the Western Hemisphere. Opossums probably diverged from the basic South American marsupials in the late Cretaceous or early Paleocene. They are small to medium-sized marsupials, about the size of a large house cat, with a long snout and prehensile tail. *Family: Didelphidae (American opossums) **Subfamily: Caluromyi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Boxthorn
''Lycium'' is a genus of flowering plants in the nightshade family, Solanaceae. The genus has a disjunct distribution around the globe, with species occurring on most continents in temperate and subtropical regions. South America has the most species, followed by North America and southern Africa. There are several scattered across Europe and Asia, and one is native to Australia.Fukuda, T., et al. (2001)Phylogeny and biogeography of the genus ''Lycium'' (Solanaceae): Inferences from chloroplast DNA sequences. ''Molecular Phylogenetics and Evolution'' 19(2), 246-58. Common English names for plants of this genus include box-thorn,''Lycium''. The Jepson eFlora 2013. , and desert-thorn. |
Maytenus
''Maytenus'' is a genus of flowering plants in the family Celastraceae. Members of the genus are distributed throughout Central America, Central and South America, Southeast Asia, Micronesia, and Australasia, the Indian Ocean and Africa. They grow in a very wide variety of climates, from tropical to subpolar. The traditional circumscription of ''Maytenus'' was paraphyly, paraphyletic, so many species have been transferred to ''Denhamia'' and ''Gymnosporia''. Species 176 species are accepted. * ''Maytenus abbottii'' Abraham Erasmus van Wyk, A.E.van Wyk * ''Maytenus acanthophylla'' * ''Maytenus acuminata'' (L.f.) Loes. * ''Maytenus agostinii'' * ''Maytenus alaternoides'' * ''Maytenus albata'' * ''Maytenus amazonica'' * ''Maytenus angolensis'' * ''Maytenus apiculata'' * ''Maytenus apurimacensis'' * ''Maytenus aquifolium'' (Mart.) * ''Maytenus ardisiifolia'' * ''Maytenus basidentata'' * ''Maytenus belizensis'' * ''Maytenus boaria'' Juan Ignacio Molina, Molina (type specie ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cressa (plant)
''Cressa'' is a genus of plants in the morning glory family known generally as alkaliweeds. These plants are native to the tropical and subtropical areas of the world. They are clumpy and low-growing but usually have erect stems covered white-haired, green leaves. They produce tiny white flowers about half a centimeter across. There are four species recognised in the genus ''Cressa'':Austin, D. F. (2000)A revision of ''Cressa'' L.(Convolvulaceae).''Botanical Journal of the Linnean Society'' 133(1), 27-39. *'' Cressa australis'' *''Cressa cretica'' *'' Cressa nudicaulis'' *''Cressa truxillensis ''Cressa truxillensis'' is a species of flowering plant in the morning glory family known by the common name spreading alkaliweed. It is native to the western United States and Mexico, where it grows in habitat with saline or alkaline soils, suc ...'' Sources External linksJepson Manual Treatment Convolvulaceae Convolvulaceae genera {{Solanales-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Capparis
''Capparis'' is a genus of flowering plants in the family Capparaceae. It includes 142 species of shrubs or lianas which are collectively known as caper shrubs or caperbushes. ''Capparis'' species occur over a wide range of habitat in the subtropical and tropical regions of Africa, Eurasia, Australasia, and the Pacific. The genus was included in the family Brassicaceae in the unrevised APG II system. Plant description The leaves are simple, entire, and rarely reduced. Flowers are bisexual, bracteates, axillary or supra-axillary, solitary or in rows, in racemes or umbels. Sepals and petals are 4 in number and are free. Stamens are many, ovary on a gynophore, one-celled. Fruit is a berry, globose or ellipsoid. Uses and ecology Caperbushes are mainly used by humans for their fruit, which are rich in micronutrients. ''C. spinosa'', simply known as caper, yields fruit and more importantly flower buds, which are widely used pickled as a vegetable condiment. The flower bud has b ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Prosopis
''Prosopis'' is a genus of flowering plants in the family Fabaceae. The current circumscription of the genus contains three species found in northern Africa, the Middle East, Central and South Asia. Previously it also contained around 40 species of spiny trees and shrubs found in subtropical and tropical regions of the Americas and Africa, now mostly placed in genera '' Strombocarpa'' and ''Neltuma''. They often thrive in arid soil and are resistant to drought, on occasion developing extremely deep root systems. Their wood is usually hard, dense and durable. Their fruits are pods and may contain large amounts of sugar. The generic name means " burdock" in late Latin and originated in the Greek language. Species The current circumscription of the genus contains three species, which are found in South Asia, the Middle East and northern Africa. * ''Prosopis cineraria'' ( L.) Druce – Persian mesquite, ghaf, khejri (Arabian Peninsula, Iran and South Asia) * '' Prosopis farcta'' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cactus
A cactus (: cacti, cactuses, or less commonly, cactus) is a member of the plant family Cactaceae (), a family of the order Caryophyllales comprising about 127 genera with some 1,750 known species. The word ''cactus'' derives, through Latin, from the Ancient Greek word (''káktos''), a name originally used by Theophrastus for a spiny plant whose identity is now not certain. Cacti occur in a wide range of shapes and sizes. They are native to the Americas, ranging from Patagonia in the south to parts of western Canada in the north, with the exception of ''Rhipsalis baccifera'', which is also found in Africa and Sri Lanka. Cacti are adapted to live in very dry environments, including the Atacama Desert, one of the driest places on Earth. Because of this, cacti show many adaptations to conserve water. For example, almost all cacti are succulents, meaning they have thickened, fleshy parts adapted to store water. Unlike many other succulents, the stem is the only part of most cacti ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
