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Talas Tuco-tuco
The Talas tuco-tuco (''Ctenomys talarum'') is a species of tuco-tuco endemic to eastern Argentina. Description The Talas tuco-tuco is a large rodent ranging in size from , more than twice the size of a house mouse. Its tail length varies from and it weighs approximately . The species shows significant sexual dimorphism. The Talas tuco-tuco basically has a cylindrically-shaped body, but is larger around the head and shoulders. It has short fine hair, which is normally a mix of hazel, gray and red on the back, and white on the underparts. It also has a distinct white patch on either side of the head, along the lower edge of its ears. Its eyes and ears are small compared to its headband it has very long, curved claws on all four feet. Distribution and habitat The Talas tuco-tuco is subterranean, living in burrows. Only one inhabits a particular burrow at a time; however, some build extensive burrowing systems connecting individual burrows with tunnels. They prefer areas with loa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Oldfield Thomas
Michael Rogers Oldfield Thomas (21 February 1858 – 16 June 1929) was a British zoologist. Career Thomas worked at the Natural History Museum on mammals, describing about 2,000 new species and subspecies for the first time. He was appointed to the museum secretary's office in 1876, transferring to the zoological department in 1878. In 1891, Thomas married Mary Kane, daughter of Sir Andrew Clark, heiress to a small fortune, which gave him the finances to hire mammal collectors and present their specimens to the museum. He also did field work himself in Western Europe and South America. His wife shared his interest in natural history, and accompanied him on collecting trips. In 1896, when William Henry Flower took control of the department, he hired Richard Lydekker Richard Lydekker (; 25 July 1849 – 16 April 1915) was an English naturalist, geologist and writer of numerous books on natural history. Biography Richard Lydekker was born at Tavistock Square in London. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mammals Described In 1898
Mammals () are a group of vertebrate animals constituting the class Mammalia (), characterized by the presence of mammary glands which in females produce milk for feeding (nursing) their young, a neocortex (a region of the brain), fur or hair, and three middle ear bones. These characteristics distinguish them from reptiles (including birds) from which they diverged in the Carboniferous, over 300 million years ago. Around 6,400 extant species of mammals have been described divided into 29 orders. The largest orders, in terms of number of species, are the rodents, bats, and Eulipotyphla (hedgehogs, moles, shrews, and others). The next three are the Primates (including humans, apes, monkeys, and others), the Artiodactyla ( cetaceans and even-toed ungulates), and the Carnivora (cats, dogs, seals, and others). In terms of cladistics, which reflects evolutionary history, mammals are the only living members of the Synapsida (synapsids); this clade, together w ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Endemic Fauna Of Argentina
Endemism is the state of a species being found 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 be also be referred to as an ''endemism'' or in scientific literature as an ''endemite''. For example '' Cytisus aeolicus'' is an endemite of the Italian flora. '' Adzharia renschi'' was once believed to be an endemite of the Caucasus, but it was later discovered to be a non-indigenous species from South America belonging to a different genus. The extreme opposite of an endemic species is one with a cosmopolitan distribution, having a global or widespread range. A rare alternative term for a species that is endemic is "precinctive", which applies to s ... [...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: Ca ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tuco-tucos
A tuco-tuco is a neotropical rodent in the family Ctenomyidae.Parada, A., G. D’Elia, C.J. Bidau, and E.P. Lessa. 2011. Species Groups and the Evolutionary Diversification of Tuco-Tucos, genus ''Ctenomys'' (Rodentia: Ctenomyidae). ''Journal of Mammalogy'' 92(3): 671-682. Tuco-tucos belong to the only living genus of the family Ctenomyidae, ''Ctenomys'', but they include approximately 60 different species. The common name, "tuco-tuco" comes from the "tuc-tuc" sound they make while they dig their burrows.Anonymous. 2013. "Southern Tuco-tuco (''Ctenomys australis'')." ARKive. 04 Oct. 2013. http://www.arkive.org/southern-tuco-tuco/ctenomys-australis/ The relationships among the species are debated by taxonomists. It has been described that they are in a state of "taxonomic chaos", but banded karyotypes have been used to help make progress on their taxonomic study.Lessa, E. 1998. The Molecular Phylogenetics of Tuco-Tucos (genus ''Ctenomys'', Rodentia: Octodontidae) Suggests an Early ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Caecum
The cecum or caecum is a pouch within the peritoneum that is considered to be the beginning of the large intestine. It is typically located on the right side of the body (the same side of the body as the appendix, to which it is joined). The word cecum (, plural ceca ) stems from the Latin '' caecus'' meaning blind. It receives chyme from the ileum, and connects to the ascending colon of the large intestine. It is separated from the ileum by the ileocecal valve (ICV) or Bauhin's valve. It is also separated from the colon by the cecocolic junction. While the cecum is usually intraperitoneal, the ascending colon is retroperitoneal. In herbivores, the cecum stores food material where bacteria are able to break down the cellulose. In humans, the cecum is involved in absorption of salts and electrolytes and lubricates the solid waste that passes into the large intestine. Structure Development The cecum and appendix are formed by the enlargement of the postarterial segment of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Trichuridae
The roundworm family Trichuridae includes the type genus ''Trichuris'' and some less widely known members. They are (after the abolishment of the artificial "Adenophorea" assemblage) placed in subclass Dorylaimia of the class Enoplea; however, the former might be better treated as a class in its own right. That nonwithstanding, their order (Trichocephalida) has been known under alternate names in the past, namely Trichiurida. The genus ''Trichuris'' is particularly well known for being a common parasite of domestic animals and less usually humans. Its common name "whipworm" refers to the shape of these worms; they look like whips with wider "handles" at the posterior end. The genera of Trichuridae are:Hallan (2007) * '' Capillostrongyloides'' Freitas & Lent, 1935 * '' Liniscus'' * '' Orthothominx'' Teixeira de Freitas & Jorge da Silva, 1960 * '' Pearsonema'' Teixeira de Freitas & Machado de Mendonça, 1960 * '' Sclerotrichum'' Rudolphi, 1819 * '' Tenoranema'' Mas-Coma & Esteban, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Trichostrongylidae
Trichostrongylidae is a family of nematode in the suborder Strongylida. Genera Genera: * '' Africanastrongylus'' Hoberg, Abrams & Ezenwa, 2008 * '' Amidostomoides'' Petrova, 1987 * '' Arnfieldia'' Sarwar, 1957 * '' Ashworthius'' Le Roux, 1930 * '' Batrachostrongylus'' Yuen, 1963 * '' Biogastranema'' Rohrbacher & Ehrenford, 1954 * '' Camelostrongylus'' Orloff, 1933 * '' Chabaudstrongylus'' Durette-Desset & Denke, 1978 * '' Cnizostrongylus'' Chabaud, Durette-Desset & Houin, 1967 * '' Cooperia'' Ransom, 1907 * '' Durettestrongylus'' Guerrero, 1983 * '' Filarinema'' Mönnig, 1929 * '' Gazellostrongylus'' Yeh, 1956 * '' Graphidiella'' Olsen, 1948 * '' Graphidioides'' Cameron, 1923 * ''Graphidium'' Railliet & Henry, 1909 * '' Graphinema'' Guerrero & Rojas, 1969 * ''Haemonchus'' Cobb, 1898 * '' Hamulonema'' Hoberg & Abrams, 2008 * '' Heligosomoides'' * '' Hexapapillostomum'' Lomakin, 1991 * '' Hoazinstrongylus'' Magalhães Pinto & Corrêa Gomes, 1985 * '' Hyostrongylus'' Hall, 1921 * '' I ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tuco-tuco
A tuco-tuco is a neotropical rodent in the family Ctenomyidae.Parada, A., G. D’Elia, C.J. Bidau, and E.P. Lessa. 2011. Species Groups and the Evolutionary Diversification of Tuco-Tucos, genus ''Ctenomys'' (Rodentia: Ctenomyidae). ''Journal of Mammalogy'' 92(3): 671-682. Tuco-tucos belong to the only living genus of the family Ctenomyidae, ''Ctenomys'', but they include approximately 60 different species. The common name, "tuco-tuco" comes from the "tuc-tuc" sound they make while they dig their burrows.Anonymous. 2013. "Southern Tuco-tuco (''Ctenomys australis'')." ARKive. 04 Oct. 2013. http://www.arkive.org/southern-tuco-tuco/ctenomys-australis/ The relationships among the species are debated by taxonomists. It has been described that they are in a state of "taxonomic chaos", but banded karyotypes have been used to help make progress on their taxonomic study.Lessa, E. 1998. The Molecular Phylogenetics of Tuco-Tucos (genus ''Ctenomys'', Rodentia: Octodontidae) Suggests an Early ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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