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Rivularia (gastropod)
''Rivularia'' is a genus of freshwater snails with a gill and an operculum, aquatic gastropod mollusks in the family Viviparidae. Species in this genus is distributed only along the Xiang River region of Hunan province, People's Republic of China. Taxonomy This genus was originally placed under the subfamily Bellamyinae of Viviparidae. In 2017, a reference moved the genus to Viviparinae according to anatomical and genetic data. Species , WoRMS only recognize one species in this genus, namely ''Rivularia auriculata'' (E. von Martens, 1875), the type species of this genus. The original combinatiion is this species was ''Paludina auriculata'' . ; ''taxon inquirendum'' * ''Rivularia bicarinata'' * ''Rivularia calcarata'' * ''Rivularia glandina'' * ''Rivularia globosa'' * ''Rivularia ovum'' * ''Rivularia subelliptica'' ; Synonyms: * ''Rivularia auricularis'' accepted as ''Rivularia auriculata'' * ''Rivularia elongata'' accepted as ''Rivularia auriculata'' (junior sy ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Genus
Genus ( plural genera ) is a taxonomic rank used in the biological classification of living and fossil organisms as well as viruses. In the hierarchy of biological classification, genus comes above species and below family. In binomial nomenclature, the genus name forms the first part of the binomial species name for each species within the genus. :E.g. '' Panthera leo'' (lion) and '' Panthera onca'' (jaguar) are two species within the genus ''Panthera''. ''Panthera'' is a genus within the family Felidae. The composition of a genus is determined by taxonomists. The standards for genus classification are not strictly codified, so different authorities often produce different classifications for genera. There are some general practices used, however, including the idea that a newly defined genus should fulfill these three criteria to be descriptively useful: # monophyly – all descendants of an ancestral taxon are grouped together (i.e. phylogenetic analysis should c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mekongia
''Mekongia'' is a genus of Viviparidae, a gastropoda mollusca in the subfamily Bellamyinae of the family Viviparidae. The name of this genus comes from the Mekongia river of Indochina peninsula. Species , WoRMS recorded the following species under ''Mekongia'': * '' Mekongia crassa'' (Benson, 1836) * ''Mekongia franzhuberi'' Thach, 2021 * ''Mekongia jullieni'' (Deshayes, 1876) * ''Mekongia lamarcki'' (Deshayes, 1876) * '' Mekongia liuiana'' (Yen, 1937) * ''Mekongia pongensis'' Brandt, 1968 * ''Mekongia rattei'' (Crosse & P. Fischer, 1876) * ''Mekongia siamensis'' (Frauenfeld, 1865) * ''Mekongia smithi'' (Yen, 1942) * ''Mekongia sphaericula'' (Deshayes, 1876) * ''Mekongia swainsoniana'' (I. Lea, 1856) ; ''taxon inquirendum'' * ''Mekongia bocourti'' (Mabille, 1889) * '' Mekangia rivularia'': possibly the synonym of ''Rivularia bicarinata'', according to comment of referenced text. * ''Mekongia turbinata'' (Deshayes, 1876) ;''synonyms'' * ''Mekongia eyriesi'' (Morelet, 1865 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Species Inquirenda
In biological classification, a ''species inquirenda'' is a species of doubtful identity requiring further investigation. The use of the term in English-language biological literature dates back to at least the early nineteenth century. The term taxon inquirendum is broader in meaning and refers to an incompletely defined taxon of which the taxonomic validity is uncertain or disputed by different experts or is impossible to identify the taxon. Further characterization is required. See also * Glossary of scientific naming * '' Candidatus'', a proposed taxa based on incomplete evidence * '' incertae sedis'', a taxon of uncertain position in a classification * ''nomen dubium In binomial nomenclature, a ''nomen dubium'' (Latin for "doubtful name", plural ''nomina dubia'') is a scientific name that is of unknown or doubtful application. Zoology In case of a ''nomen dubium'' it may be impossible to determine whether a s ...'', a name of unknown or doubtful application * Open nome ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Paludina Auriculata
''Viviparus'', common name the river snails, is a genus of large, freshwater snails with an operculum, aquatic gastropod mollusks.Bouchet, P. (2014). Viviparus Montfort, 1810. Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=154004 on 2014-11-13 They are primitive members of the clade Caenogastropoda. The old name of the genus was ''Paludina''. Distribution This genus is palaearctic in distribution, and is known from the Jurassic to the Recent. Species ''Viviparus'' belongs to the subfamily Viviparinae. Its taxonomy is currently under development and many of its species are often included in other related genera. It includes the following species: * † ''Viviparus achatinoides'' (Deshayes, 1838) * '' Viviparus acerosus'' (Bourguignat, 1862) * † ''Viviparus aitaiensis'' Jekelius, 1932 * † ''Viviparus alexandrieni'' Cobălcescu, 1883 * † ''Viviparus altecarinatus'' Brusina, 1874 * † '' Viviparus altus'' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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(s). Article 67.1 A similar concept is used for suprageneric groups and called a type genus. In botanical nomenclature, these terms have no formal standing under the code of nomenclature, but are sometimes borrowed from zoological nomenclature. In botany, the type of a genus name is a specimen (or, rarely, an illustration) which is also the type of a species name. The species name that has that type can also be referred to as the type of the genus name. Names of genus and family ranks, the various subdivisions of those ranks, and some higher-rank names based on genus names, have such types. [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rivularia Auriculata
''Rivularia'' is the scientific name of two genera of organisms and may refer to: * ''Rivularia'' (cyanobacteria), a genus of cyanobacteria in the family Rivulariaceae * ''Rivularia'' (gastropod), a genus of snails in the family Viviparidae {{Genus disambiguation ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
World Register Of Marine Species
The World Register of Marine Species (WoRMS) is a taxonomic database that aims to provide an authoritative and comprehensive list of names of marine organisms. Content The content of the registry is edited and maintained by scientific specialists on each group of organism. These taxonomists control the quality of the information, which is gathered from the primary scientific literature as well as from some external regional and taxon-specific databases. WoRMS maintains valid names of all marine organisms, but also provides information on synonyms and invalid names. It is an ongoing task to maintain the registry, since new species are constantly being discovered and described by scientists; in addition, the nomenclature and taxonomy of existing species is often corrected or changed as new research is constantly being published. Subsets of WoRMS content are made available, and can have separate badging and their own home/launch pages, as "subregisters", such as the ''World List ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
People's Republic Of China
China, officially the People's Republic of China (PRC), is a country in East Asia. It is the world's List of countries and dependencies by population, most populous country, with a Population of China, population exceeding 1.4 billion, slightly ahead of India. China spans the equivalent of five time zones and Borders of China, borders fourteen countries by land, the List of countries and territories by land borders, most of any country in the world, tied with Russia. Covering an area of approximately , it is the world's third List of countries and dependencies by area, largest country by total land area. The country consists of 22 provinces of China, provinces, five autonomous regions of China, autonomous regions, four direct-administered municipalities of China, municipalities, and two special administrative regions of China, Special Administrative Regions (Hong Kong and Macau). The national capital is Beijing, and the List of cities in China by population, most populous ci ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Freshwater Snail
Freshwater snails are gastropod mollusks which live in fresh water. There are many different families. They are found throughout the world in various habitats, ranging from ephemeral pools to the largest lakes, and from small seeps and springs to major rivers. The great majority of freshwater gastropods have a shell, with very few exceptions. Some groups of snails that live in freshwater respire using gills, whereas other groups need to reach the surface to breathe air. In addition, some are amphibious and have both gills and a lung (e.g. '' Ampullariidae''). Most feed on algae, but many are detritivores and some are filter feeders. According to a 2008 review of the taxonomy, there are about 4,000 species of freshwater gastropods (3,795–3,972). At least 33–38 independent lineages of gastropods have successfully colonized freshwater environments. It is not possible to quantify the exact number of these lineages yet, because they have yet to be clarified within the Ce ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hunan Province
Hunan (, ; ) is a landlocked province of the People's Republic of China, part of the South Central China region. Located in the middle reaches of the Yangtze watershed, it borders the province-level divisions of Hubei to the north, Jiangxi to the east, Guangdong and Guangxi to the south, Guizhou to the west and Chongqing to the northwest. Its capital and largest city is Changsha, which also abuts the Xiang River. Hengyang, Zhuzhou, and Yueyang are among its most populous urban cities. With a population of just over 66 million residing in an area of approximately , it is China's 7th most populous province, the fourth most populous among landlocked provinces, the second most populous in South Central China after Guangdong and the most populous province in Central China. It is the largest province in South-Central China and the fourth largest among landlocked provinces and the 10th most extensive province by area. Hunan's nominal GDP was US$ 724 billion (CNY 4.6 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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