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Unicuspid
A unicuspid is a tooth that has only one cusp. In shrews The dental formulas of shrews are distinguished by the number of unicuspids. All shrews have (in one half of each jaw) one large incisor followed by a variable number of unicuspids, followed by a complex premolar, followed by three molars. All shrews except for those of the genus ''Myosorex'' have one lower unicuspid; ''Myosorex'' has two. The genera '' Blarina'', '' Blarinella'', and '' Sorex'' have five upper unicuspids. The genera ''Myosorex'', '' Feroculus'', ''Scutisorex'', '' Suncus'', ''Sylvisorex'', ''Ruwenzorisorex'', ''Cryptotis'', '' Neomys'', ''Soriculus'', and ''Episoriculus'' have four upper unicuspids. The genera '' Congosorex'', ''Surdisorex'', '' Solisorex'', ''Paracrocidura'', '' Crocidura'', ''Chimarrogale'', '' Chodsigoa'', ''Megasorex'', ''Nectogale'', and ''Notiosorex'' have three upper unicuspids. The genera ''Diplomesodon'' and ''Anourosorex Asian mole shrews (''Anourosorex'') are a genus of shr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cusp (anatomy)
A cusp is a pointed, projecting, or elevated feature. In animals, it is usually used to refer to raised points on the crowns of teeth. The concept is also used with regard to the leaflets of the four heart valves. The mitral valve, which has two cusps, is also known as the bicuspid valve, and the tricuspid valve has three cusps. In humans A cusp is an occlusal or incisal eminence on a tooth. Canine teeth, otherwise known as cuspids, each possess a single cusp, while premolars, otherwise known as bicuspids, possess two each. Molars normally possess either four or five cusps. In certain populations the maxillary molars, especially first molars, will possess a fifth cusp situated on the mesiolingual cusp known as the Cusp of Carabelli. Buccal Cusp- One other variation of the upper first premolar is the 'Uto-Aztecan' upper premolar. It is a bulge on the buccal cusp that is only found in Native American Indians, with highest frequencies of occurrence in Arizona. The name is no ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cryptotis
The genus ''Cryptotis'' is a group of relatively small shrews with short ears, which are usually not visible, and short tails, commonly called small-eared shrews. They have 30 teeth and are members of the red-toothed shrew subfamily. Since 1992, Neal Woodman (in cooperation with Robert Timm) at the United States National Museum has been in the process of revising the genus. To date, this has resulted in an increase in the number of species from 12 to 30. Members of the genus are found mainly in Central America; the North American least shrew, ''C. parva'', is the only species found north of Mexico. The genus occurs as far south as northern Peru and as far east as western Venezuela in South America. It is the only soricomorph genus found south of Guatemala. The limited diversity and restricted northern distribution of shrews in South America implies that the group entered the continent relatively recently from Central America, where they are more diverse, presumably as part of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Notiosorex
''Notiosorex'' is a genus of Shrew (animal), shrew from the subfamily Soricinae. History ''Notiosorex'' shrews have a fossil history that extends to the Miocene (i.e., mid-Hemphillian). The geographic distribution of the genus has always been in the southwestern United States and northern Mexico. Species There are four described extant species of ''Notiosorex'': * Notiosorex cockrumi, Cockrum's gray shrew (''N. cockrumi'') * Crawford's gray shrew (''N. crawfordi'') * Large-eared gray shrew (''N. evotis'') * Villa's gray shrew (''N. villai'') *(''N. tataticuli'') There are several extinct species of ''Notiosorex'' described from the fossil record: * ''Notiosorex repenningi, N. repenningi'' * ''Notiosorex jacksoni, N. jacksoni'' * ''Notiosorex harrisi, N. harrisi'' * ''Notiosorex dalquesti, N. dalquesti'' References Notiosorex, Mammal genera {{redtoothed-shrew-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nectogale
The elegant water shrew (''Nectogale elegans'') is a species of mammal in the subfamily Soricinae of the family Soricidae. It is the only species within the genus ''Nectogale''. It lives in Sikkim and China China, officially the People's Republic of China (PRC), is a country in East Asia. It is the world's most populous country, with a population exceeding 1.4 billion, slightly ahead of India. China spans the equivalent of five time zones and .... References Mammals described in 1870 Red-toothed shrews Taxonomy articles created by Polbot {{redtoothed-shrew-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Megasorex
The Mexican shrew (''Megasorex gigas'') is a species of mammal from the subfamily Soricinae in the family Soricidae. It is monotypic within the genus ''Megasorex'' and is endemic to Mexico Mexico (Spanish: México), officially the United Mexican States, is a country in the southern portion of North America. It is bordered to the north by the United States; to the south and west by the Pacific Ocean; to the southeast by Guatema .... References Endemic mammals of Mexico Red-toothed shrews Mammals described in 1897 Taxonomy articles created by Polbot Jalisco dry forests {{redtoothed-shrew-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chodsigoa
''Chodsigoa'' is a genus of shrews in the tribe Nectogalini. Species There are currently ten species classified under the genus ''Chodsigoa'': *Van Sung's shrew (''Chodsigoa caovansunga'') (Lunde, Musser and Son, 2003) *''?Chodsigoa hoffmanni'' sp. nov. (Zhong-Zheng Chen et al., 2017) *De Winton's shrew (''Chodsigoa hypsibia'') (de Winton, 1899) **''Chodsigoa hypsibia parva'' *Lamulate shrew (''Chodsigoa lamula'') (Thomas, 1912) *Lowe's shrew (''Chodsigoa parca'') (G. M. Allen, 1923) **''Chodsigoa parca lowei'' **''Chodsigoa parca parca'' **''Chodsigoa parca furva'' (Anthony, 1941) *Pygmy brown-toothed shrew (''Chodsigoa parva'') (G. M. Allen, 1923) *Salenski's shrew (''Chodsigoa salenskii'') (Kastschenko, 1907) *Smith's shrew (''Chodsigoa smithii'') (Thomas, 1911) *Lesser Taiwanese shrew (''Chodsigoa sodalis'') (Thomas, 1913) The name ''Chodsigoa'' has also been classified as a subgenus for the genus ''Soriculus'' in the same family. References Further reading * *Arch ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chimarrogale
The Asiatic water shrews are the members of the genus ''Chimarrogale''. They are mammals in the subfamily Soricinae of the family Soricidae. They are aquatic, with some species inhabiting streams. The genus contains the following species: * Malayan water shrew (''Chimarrogale hantu'') * Himalayan water shrew (''Chimarrogale himalayica'') * Bornean water shrew (''Chimarrogale phaeura'') * Japanese water shrew (''Chimarrogale platycephalus'') * Chinese water shrew (''Chimarrogale styani'') *Sumatran water shrew The Sumatran water shrew (''Chimarrogale sumatrana'') is a red-toothed shrew found only in the Padang highlands of western Sumatra, Indonesia. Its natural habitats are streams in montane forests. The species is only known from a holotype, which i ... (''Chimarrogale sumatrana'') References Taxonomy articles created by Polbot {{redtoothed-shrew-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Crocidura
The genus ''Crocidura'' is one of nine genus, genera of the shrew subfamily Crocidurinae. Members of the genus are commonly called white-toothed shrews or musk shrews, although both also apply to all of the species in the subfamily. With over 180 species, ''Crocidura'' contains the most species of any mammal genus. The name ''Crocidura'' means "woolly tail", because the tail of ''Crocidura'' species are covered in short hairs interspersed with longer ones. They are found throughout all tropical and temperate regions of the Old World, from South Africa north to Europe, and east throughout Asia, as far east as the Malay Archipelago. One species, the possibly extinct Christmas Island shrew (''C. trichura''), also inhabited Christmas Island. They likely originated in Africa or Anatolia, Asia Minor during the Miocene, spread to Europe by the early Pliocene, and spread to eastern Asia and the Mediterranean by the Pleistocene. List of species Extant species *Javan hidden shrew ('' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Paracrocidura
''Paracrocidura'' is a genus of shrews. They are mammals in the family Soricidae. The vernacular name large-headed shrews is sometimes collectively applied to the genus, but has also been applied to the species '' Crocidura grandiceps''. The genus contains the following species: * Grauer's large-headed shrew Grauer's large-headed shrew (''Paracrocidura graueri'') is a species of mammal in the family Soricidae. It is endemic to the Democratic Republic of the Congo. Its natural habitat is subtropical or tropical moist montane forest Montane ecosys ... (''Paracrocidura graueri'') * Greater large-headed shrew (''Paracrocidura maxima'') * Lesser large-headed shrew (''Paracrocidura schoutedeni'') References Mammal genera Taxa named by Henri Heim de Balsac Taxonomy articles created by Polbot {{whitetoothed-shrew-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Surdisorex
''Surdisorex'' is a genus of mammals in the family Soricidae. ''Surdisorex'' is one of three genera of African shrews, which, in turn, are one of three living subfamilies of shrews. Species in the genus ''Surdisorex'' are called African mole shrews because of their similarity to moles, to which they are not closely related. The genus ''Surdisorex'' represents Kenya's only endemic genus of mammal. Prior to the description of the Mount Elgon mole shrew (''Surdisorex schlitteri''), the genus included two species from the highlands of central Kenya; the Aberdare mole shrew (''S. norae'') restricted to the Aberdare Range and the Mount Kenya mole shrew (''S. polulus'') restricted to Mount Kenya. Species The three species, all found only in Kenya, are: * Aberdare mole shrew The Aberdare mole shrew (''Surdisorex norae'') is a species of mammal in the family Soricidae endemic to the Aberdare Mountains in Kenya ) , national_anthem = " Ee Mungu Nguvu Yetu"() , image_ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
