|
Tragulus
''Tragulus'' is a genus of even-toed ungulates in the family Tragulidae that are known as mouse-deer. In Ancient Greek τράγος (''tragos'') means a male goat, while the Latin diminutive ''–ulus'' means 'tiny'. With a weight of and a length of , they are the smallest ungulates in the world, though the largest species of mouse-deer surpass some species of '' Neotragus'' antelopes in size.Nowak, R. M. (eds) (1999). ''Walker's Mammals of the World.'' 6th edition. Johns Hopkins University Press. The mouse-deer are restricted to Southeast Asia from far southern China (south Yunnan) to the Philippines (Balabac) and Java. Following recent taxonomic changes, several of the species in this genus are poorly known, but all are believed to be mainly nocturnal and feed on leaves, fruits, grasses, and other vegetation in the dense forest undergrowth. They are solitary or live in pairs, and the males have elongated canine teeth (neither gender has horns or antlers) that are used in fight ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Java Mouse-deer
The Java mouse-deer (''Tragulus javanicus'') is a species of even-toed ungulate in the family Tragulidae. When it reaches maturity it is about the size of a rabbit, making it the smallest living ungulate. It is found in forests in Java and perhaps Bali, although sightings there have not been verified. Taxonomy The Java mouse-deer's common scientific name is ''Tragulus javanicus'', although other classification names for it exist, including ''Tragulus javanica'', ''Cervus javanicus'', and the heterotypic synonym ''Tragulus fuscatus''.Javan mouse-deer (Tragulus javanicus). (2013). ARKive - Discover the world's most endangered species. Retrieved from http://www.arkive.org/javan-mouse-deer/tragulus-javanicus The Java mouse-deer is also known by many common names, including Javan chevrotain, Javan mousdeer, or Java Mouse Deer.Facts about Lesser Mouse Deer (Tragulus javanicus) - Encyclopedia of Life. (n.d.). Encyclopedia of Life - Animals - Plants - Pictures & Information. Retrieved fr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tragulus Javanicus
The Java mouse-deer (''Tragulus javanicus'') is a species of even-toed ungulate in the family Tragulidae. When it reaches maturity it is about the size of a rabbit, making it the smallest living ungulate. It is found in forests in Java and perhaps Bali, although sightings there have not been verified. Taxonomy The Java mouse-deer's common scientific name is ''Tragulus javanicus'', although other classification names for it exist, including ''Tragulus javanica'', ''Cervus javanicus'', and the heterotypic synonym ''Tragulus fuscatus''.Javan mouse-deer (Tragulus javanicus). (2013). ARKive - Discover the world's most endangered species. Retrieved from http://www.arkive.org/javan-mouse-deer/tragulus-javanicus The Java mouse-deer is also known by many common names, including Javan chevrotain, Javan mousdeer, or Java Mouse Deer.Facts about Lesser Mouse Deer (Tragulus javanicus) - Encyclopedia of Life. (n.d.). Encyclopedia of Life - Animals - Plants - Pictures & Information. Retrieved fr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chevrotains
Chevrotains, or mouse-deer, are small even-toed ungulates that make up the family Tragulidae, the only extant members of the infraorder Tragulina. The 10 extant species are placed in three genera, but several species also are known only from fossils. The extant species are found in forests in South and Southeast Asia, with a single species, the water chevrotain, in the rainforests of Central and West Africa. They are solitary or live in pairs, and feed almost exclusively on plant material. Chevrotains are the smallest hoofed mammals in the world. The Asian species weigh between , while the African chevrotain is considerably larger at . With an average length of and an average height of , the Java mouse-deer is the smallest extant (living) ungulate or hoofed mammal, as well as the smallest extant even-toed ungulate. In November 2019, conservation scientists announced that they had photographed silver-backed chevrotains (''Tragulus versicolor'') in a Vietnamese f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tragulus
''Tragulus'' is a genus of even-toed ungulates in the family Tragulidae that are known as mouse-deer. In Ancient Greek τράγος (''tragos'') means a male goat, while the Latin diminutive ''–ulus'' means 'tiny'. With a weight of and a length of , they are the smallest ungulates in the world, though the largest species of mouse-deer surpass some species of '' Neotragus'' antelopes in size.Nowak, R. M. (eds) (1999). ''Walker's Mammals of the World.'' 6th edition. Johns Hopkins University Press. The mouse-deer are restricted to Southeast Asia from far southern China (south Yunnan) to the Philippines (Balabac) and Java. Following recent taxonomic changes, several of the species in this genus are poorly known, but all are believed to be mainly nocturnal and feed on leaves, fruits, grasses, and other vegetation in the dense forest undergrowth. They are solitary or live in pairs, and the males have elongated canine teeth (neither gender has horns or antlers) that are used in fight ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vietnam Mouse-deer
The Vietnam mouse-deer (''Tragulus versicolor''), also known as the silver-backed chevrotain, is an even-toed ungulate in the family Tragulidae known only from Vietnam. It was first described in 1910 by British zoologist Oldfield Thomas, who procured four specimens from Nha Trang in Annam. Little is known about its distribution and ecology. After 1910, the Vietnam mouse-deer was reported next in 1990 near Dak Rong and Buon Luoi in the Gia Lai Province. With increasing hunting pressure, habitat loss due to deforestation and no more reports of the species in the wild, the mouse-deer was feared to have gone extinct. The IUCN listed the species as Data Deficient in 2008. In 2019, a study confirmed the presence of the Vietnam mouse-deer in dry low-lying forests of southern Vietnam with camera trap evidence. The mouse-deer is characterised by a rough coat with a strange double-tone coloration unseen in other chevrotains; the front part of the body is reddish brown and contrasts str ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Philippine Mouse-deer
The Philippine mouse-deer (''Tragulus nigricans''), also known as the Balabac chevrotain or ''pilandok'' (in Filipino), is a small, nocturnal ruminant, which is endemic to Balabac and nearby smaller islands (Bugsuk and Ramos) southwest of Palawan in the Philippines. The genus ''Tragulus'' means 'little goat' and the Philippine mouse-deer has been named so due to the horizontal pupils of the eyes. This position of the pupil allows for an increase in peripheral depth perception. It has traditionally been considered a subspecies of the greater mouse-deer (''T. napu''). In 2004, though, ''T. nigricans'' was separated from ''T. napu'' as its own species due to differences in skull morphology (skull measurements). Contrary to its common name, the Philippine mouse-deer does not belong to the deer family Cervidae, but is a member of the chevrotain family. Morphology It has a black and brown coat with white stripes on the throat and chest. Each individual hair has sections of different ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lesser Mouse-deer
The lesser mouse-deer, lesser Malay chevrotain, or kanchil (''Tragulus kanchil'') is a species of even-toed ungulate in the family Tragulidae. Distribution The lesser mouse-deer is found widely across Southeast Asia in Indochina, Myanmar (Kra Isthmus), Brunei, Cambodia Cambodia (; also Kampuchea ; km, កម្ពុជា, UNGEGN: ), officially the Kingdom of Cambodia, is a country located in the southern portion of the Indochinese Peninsula in Southeast Asia, spanning an area of , bordered by Thailand t ..., China (Southern Yunnan), Indonesia (Kalimantan, Sumatra and many other small islands), Laos, Malaysia (Peninsular Malaysia, Sarawak and many other small islands), Singapore, Thailand, and Vietnam. Description It is one of the smallest known hoofed mammals, its mature size being as little as 45 cm (18 inches) and 2 kg (4.4 lb) and related to the even smaller Java mouse-deer. It is threatened by predation by feral dogs. Through further research it ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Even-toed Ungulate
The even-toed ungulates (Artiodactyla , ) are ungulates—hoofed animals—which bear weight equally on two (an even number) of their five toes: the third and fourth. The other three toes are either present, absent, vestigial, or pointing posteriorly. By contrast, odd-toed ungulates bear weight on an odd number of the five toes. Another difference between the two is that many other even-toed ungulates (with the exception of Suina) digest plant cellulose in one or more stomach chambers rather than in their intestine as the odd-toed ungulates do. Cetaceans (whales, dolphins, and porpoises) evolved from even-toed ungulates, and are therefore often classified under the same taxonomic branch because a species cannot outgrow its evolutionary ancestry; some modern taxonomists combine the two under the name Cetartiodactyla , while others opt to include cetaceans in the already-existing Artiodactyla. The roughly 270 land-based even-toed ungulate species include pigs, peccaries, hippo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mammal Genera
There are currently 1,258 genera, 156 families, 27 orders, and around 5,937 recognized living species of mammal. Mammalian taxonomy is in constant flux as many new species are described and recategorized within their respective genera and families. The taxonomy represented here is a compilation of the most logical and up-to-date information on mammalian taxonomy from many sources, the main ones being ''Handbook of the Mammals of the World'' series and ''Mammal Species of the World''. Afrosoricida Suborder Tenrecomorpha *Family Tenrecidae – tenrecs and otter shrews **Subfamily Geogalinae ***Genus ''Geogale'' – long-eared tenrec **Subfamily Oryzorictinae ***Genus ''Microgale'' – shrew tenrecs ***Genus '' Nesogale'' – shrew tenrecs ***Genus '' Oryzorictes'' – rice tenrecs **Subfamily Tenrecinae ***Genus ''Echinops'' – lesser hedgehog tenrec ***Genus '' Hemicentetes'' – streaked tenrec ***Genus ''Setifer'' – greater hedgehog tenrec ***Genus ''Tenrec'' – common tenre ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ungulate
Ungulates ( ) are members of the diverse clade Ungulata which primarily consists of large mammals with hooves. These include odd-toed ungulates such as horses, rhinoceroses, and tapirs; and even-toed ungulates such as cattle, pigs, giraffes, camels, sheep, deer, and hippopotamuses. Cetaceans such as whales, dolphins, and porpoises are also classified as even-toed ungulates, although they do not have hooves. Most terrestrial ungulates use the hoofed tips of their toes to support their body weight while standing or moving. The term means, roughly, "being hoofed" or "hoofed animal". As a descriptive term, "ungulate" normally excludes cetaceans as they do not possess most of the typical morphological characteristics of other ungulates, but recent discoveries indicate that they were also descended from early artiodactyls. Ungulates are typically herbivorous and many employ specialized gut bacteria to allow them to digest cellulose. Some modern species, such as pigs, are omnivorous, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mathurin Jacques Brisson
Mathurin Jacques Brisson (; 30 April 1723 – 23 June 1806) was a French zoologist and natural philosopher. Brisson was born at Fontenay-le-Comte. The earlier part of his life was spent in the pursuit of natural history; his published works in this field included ''Le Règne animal'' (1756) and the highly regarded ''Ornithologie'' (1760). As a young man, he was a disciple and assistant of René Antoine Ferchault de Réaumur. For a period of time he was an instructor of physical sciences and natural history to the family of the monarch. He held the chair of physics at the College of Navarre, and from 1759 was a member of the Academy of Sciences. A significant work involving the "specific weight of bodies" was his ''Pesanteur Spécifique des Corps'' (1787). In his investigations of electricity, Brisson was opposed to the theories of Priestley and Franklin. [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lumpers And Splitters
Lumpers and splitters are opposing factions in any discipline that has to place individual examples into rigorously defined categories. The lumper–splitter problem occurs when there is the desire to create classifications and assign examples to them, for example schools of literature, biological taxa and so on. A "lumper" is a person who assigns examples broadly, assuming that differences are not as important as signature similarities. A "splitter" is one who makes precise definitions, and creates new categories to classify samples that differ in key ways. Origin of the terms The earliest known use of these terms was by Charles Darwin, in a letter to Joseph Dalton Hooker in 1857: ''It is good to have hair-splitters & lumpers''. They were introduced more widely by George G. Simpson in his 1945 work ''The Principles of Classification and a Classification of Mammals''. As he put it: A later use can be found in the title of a 1969 paper "On lumpers and splitters ..." by the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
.png "Click for more on -> Chevrotains")
