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Fiery Squirrel
The fiery squirrel (''Sciurus flammifer'') is a rodent in the family Sciuridae. The taxon is endemic to the area south of the Orinoco River in the state of Bolívar, Venezuela. Taxonomy In 2015 de Vivo & Carmignotto reduced this taxon to a subspecies of ''Hadrosciurus igniventris''. The taxon was first described as a species in 1904 by Michael Rogers Oldfield Thomas. In 1914 Joel Asaph Allen designated it as the type species for his new monotypic genus ''Hadrosciurus''. In 1927 Oldfield Thomas subsumed ''Hadrosciurus'' to a subgenus of ''Sciurus''. In 1928 Oldfield Thomas reduced subgenus ''Urosciurus'' into synonymy with subgenus ''Hadrosciurus'', and moved ''Urosciurus pyrrhinus'' and ''U. igniventris'' to ''Hadrosciurus''. In 1940 Ellerman moved the new additions to subgenus ''Hadrosciurus'' to subgenus ''Guerlinguetus'', returning it to monotypy. In 1959 Moore raised subgenus ''Guerlinguetus'' to the rank of genus in which he included all larger South American squirrels, ... [...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] |
Pacaraima Mountains
The Pacaraima or Pakaraima Mountains ( pt, Serra de Pacaraima, es, Sierra de Pacaraima) are a mountain range primarily in southwestern Guyana, and into northern Brazil and eastern Venezuela. Geography The range extends from west to east for over . Its highest peak is Mount Roraima at above sea level, a tepui surrounded by cliffs high. It is geologically part of the Guayana Shield and biogeographically part of the Guayana Highlands.The mountains form the divide between the Orinoco Valley to the north and the Amazon Basin to the south. They also serve as a natural boundary in the east–west direction, where they extend to form a border marker between Brazil and southeastern Venezuela and between Brazil and west central Guyana. Geology The Pacaraimas are a sandstone plateau underlain by a horizonal precambrian marine strata that arose in post-cretaceous time. Erosion of the sandstone (the Roraima Supergroup) results in dramatic escarpments, the individual remnants of which ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mammals Described In 1904
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 with Sauropsida ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sciurus
The genus ''Sciurus'' contains most of the common, bushy-tailed squirrels in North America, Europe, temperate Asia, Central America and South America. Species The number of species in the genus is subject to change. In 2005, Thorington & Hoffman- whose taxonomic interpretation is followed by the IUCN website- accepted 28 species in the genus: Genus ''Sciurus'' *Subgenus ''Sciurus'' **Allen's squirrel, ''Sciurus alleni'' **Arizona gray squirrel, ''Sciurus arizonensis'' **Mexican gray squirrel, ''Sciurus aureogaster'' **Eastern gray squirrel, ''Sciurus carolinensis'' **Collie's squirrel, ''Sciurus colliaei'' **Deppe's squirrel, ''Sciurus deppei'' **Japanese squirrel, ''Sciurus lis'' **Calabrian black squirrel, ''Sciurus meridionalis'' **Mexican fox squirrel, ''Sciurus nayaritensis'' **Fox squirrel, ''Sciurus niger'' ** Peters's squirrel, ''Sciurus oculatus'' **Variegated squirrel, ''Sciurus variegatoides'' **Eurasian red squirrel, ''Sciurus vulgaris'' **Yucatan squirrel, ''Sciur ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Endemic Fauna Of Venezuela
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 Venezuela
The fauna of Venezuela consists of a huge variety of animals. Venezuela's diverse wildlife includes manatees, Amazon river dolphins, and Orinoco crocodiles, which have been reported to reach up to in length. Some 23% of reptilian and 50% of amphibian species that inhabit the country are endemic to Venezuela. Overall, around 8,000 species (the world's 5th highest total) are endemic to the country. Venezuela hosts a total of 1,417 bird species, more than 351 mammals, 341 reptiles, 315 amphibians and more than 2,000 freshwater and marine fishes. Invertebrates groups have not been inventoried exhaustively, but among the well known groups there are around 900 species of marine molluscs, 1,600 butterflies, over 120 dung beetles species and 39 species of blowflies.Capelo, Juan C., Buitrago, Joaquín. 1998: Distribución geográfica de los moluscos marinos en el oriente de Venezuela. Memoria de la Sociedad de Ciencias Naturales La Salle, LXIII(150):109-160 Birds There are 1,416 bird s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Attalea (plant)
''Attalea'' is a large genus of Arecaceae, palms native to Mexico, the Caribbean, Central and South America. This pinnately leaved, non-spiny genus includes both small palms lacking an aboveground stem and large trees. The genus has a complicated taxonomic history, and has often been split into four or five genera based on differences in the male flowers. Since the genera can only be distinguished on the basis of their male flowers, the existence of intermediate flower types and the existence of hybrids between different genera has been used as an argument for keeping them all in the same genus. This has been supported by recent molecular phylogenies. Between 29 and 67 species are recognised in the genus, with estimates of as many as 100. Incomplete herbarium collections make it difficult to determine whether certain groups represent single species, or groups of similar species. ''Attalea'' species have a long history of human use, and include economically important sources of pa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sucre Municipality, Bolívar
Sucre is one of the 11 municipalities (municipios) that makes up the Venezuelan state of Bolívar and, according to the 2011 census by the National Institute of Statistics of Venezuela, the municipality has a population of 20,359. The town of Maripa is the shire town of the Sucre Municipality.http://www.ine.gob.ve/secciones/division/Bolivar.zip Name The municipality is one of several in Venezuela named " Sucre Municipality" in honour of Venezuelan independence hero Antonio José de Sucre. Demographics The Sucre Municipality, according to a 2007 population estimate by the National Institute of Statistics of Venezuela, has a population of 27,218 (up from 20,108 in 2000). This amounts to 1.8% of the state's population. The municipality's population density is . Government The mayor of the Sucre Municipality is Juan Carlos Figarella Díaz, re-elected on October 31, 2004, with 47% of the vote. The municipality is divided into four (five if you count the Capital Sucre section) pa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gran Sabana Municipality
The Municipio Gran Sabana is one of the 11 municipalities (municipios) that makes up the Venezuelan state of Bolívar and, according to the 2011 census by the National Institute of Statistics of Venezuela, the municipality has a population of 28,450. The town of Santa Elena de Uairén is the shire town of the Gran Sabana Municipality.http://www.ine.gob.ve/secciones/division/Bolivar.zip Demographics The Gran Sabana Municipality, according to a 2007 population estimate by the National Institute of Statistics of Venezuela, has a population of 34,095 (up from 27,027 in 2000). This amounts to 2.2% of the state's population. The municipality's population density is . As of 2011, the Gran Sabana Municipality has amongst the highest proportion of indigenous people in the country, roughly 77.67%, the majority of which being Pemon. Government The mayor of the Gran Sabana Municipality is Emilio González, elected in the 2017 Venezuelan municipal elections. He replaced Manuel Vallés sho ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cedeño Municipality, Bolívar
The Cedeño Municipality is one of the 11 municipalities (municipios) that makes up the Venezuelan state of Bolívar. According to the 2011 census by the National Institute of Statistics of Venezuela, the municipality has a population of 67,000. The town of Caicara del Orinoco is the municipal seat of the Cedeño Municipality.http://www.ine.gob.ve/secciones/division/Bolivar.zip Demographics The Cedeño Municipality, according to a 2007 population estimate by the National Institute of Statistics of Venezuela, has a population of 88,296 (up from 69,664 in 2000). This amounts to 5.8% of the state's population. The municipality's population density is . Government The mayor of the Cedeño Municipality is Luis Guillermo Troconiz Marquez, elected on October 31, 2004, with 25% of the vote. He replaced Ismael Ortuño shortly after the elections. The municipality is divided into five (six if you count the Capital Cedeño section) parishes; Altagracia, Ascensión Farreras, Guaniamo, L ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Caroní River
The Caroní River is the second most important river of Venezuela, the second in flow, and one of the longest, from the Kukenan tepui through to its confluence with the Orinoco River. The name "Caroní" is applied starting from the confluence of the Kukenan with the Yuruaní River at from the source of the Kukenan and from its discharge in the Orinoco. The confluence takes place in Bolivar State. Hydraulic regime The Caroní is one of the rivers with the highest discharge rates in the world, with respect to the area of its basin. The average discharge is , with variations caused by the wet/dry seasons. The average maximum discharge is , and the average minimum is . Among the historic extremes are . The Caroní supplies 15.5 percent of the discharge of the Orinoco river. One of the characteristics of the Caroní's water is the dark color, caused by the high amount of humic acids due to the incomplete decomposition of the phenol content of the vegetation. The Caroní t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rodent
Rodents (from Latin , 'to gnaw') are mammals of the order Rodentia (), which are characterized by a single pair of continuously growing incisors in each of the upper and lower jaws. About 40% of all mammal species are rodents. They are native to all major land masses except for New Zealand, Antarctica, and several oceanic islands, though they have subsequently been introduced to most of these land masses by human activity. Rodents are extremely diverse in their ecology and lifestyles and can be found in almost every terrestrial habitat, including human-made environments. Species can be arboreal, fossorial (burrowing), saltatorial/richochetal (leaping on their hind legs), or semiaquatic. However, all rodents share several morphological features, including having only a single upper and lower pair of ever-growing incisors. Well-known rodents include mice, rats, squirrels, prairie dogs, porcupines, beavers, guinea pigs, and hamsters. Rabbits, hares, and pikas, whose i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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