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Oreophrynella Quelchii
''Oreophrynella quelchii'', commonly known as the Roraima black frog or Roraima bush toad, is a species of toad in the family Bufonidae. This species is restricted to the transboundary summit of Mount Roraima in Venezuela, Guyana and Brazil, and to the nearby Wei-Assipu-tepui on the Brazil–Guyana border. It has been recorded at elevations of above sea level. History and etymology ''Oreophrynella quelchii'' was described as ''Oreophryne Quelchii'' by George Albert Boulenger in 1895. The description was based on one of the several specimens collected from the summit of Mount Roraima by Mr. J. J. Quelch and Mr. F. McConnell. The species was named for the former. Description The holotype, a male, measures in snout–vent length. Coloration is black, but the throat and belly are spotted or marbled with bright yellow, also described as bright orange with black mottling. Webbing between the fingers and toes is moderate (basal). The dorsum has a high density of tubercles of vario ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
George Albert Boulenger
George Albert Boulenger (19 October 1858 – 23 November 1937) was a Belgian-British zoologist who described and gave scientific names to over 2,000 new animal species, chiefly fish, reptiles, and amphibians. Boulenger was also an active botanist during the last 30 years of his life, especially in the study of roses. Life Boulenger was born in Brussels, Belgium, the only son of Gustave Boulenger, a Belgian public notary, and Juliette Piérart, from Valenciennes. He graduated in 1876 from the Free University of Brussels with a degree in natural sciences, and worked for a while at the Royal Belgian Institute of Natural Sciences, Brussels, as an assistant naturalist studying amphibians, reptiles, and fishes. He also made frequent visits during this time to the ''Muséum national d'Histoire naturelle'' in Paris and the British Museum in London. In 1880, he was invited to work at the Natural History Museum, then a department of the British Museum, by Dr. Albert C. L. G. Günther a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tepui
A tepui , or tepuy (), is a table-top mountain or mesa found in South America, especially in Venezuela and western Guyana. The word tepui means "house of the gods" in the native tongue of the Pemon, the indigenous people who inhabit the Gran Sabana. Tepuis tend to be found as isolated entities rather than in connected ranges, which makes them the host of a unique array of endemic plant and animal species. Some of the most outstanding tepuis are Auyantepui, Autana, Neblina, and Mount Roraima. They are typically composed of sheer blocks of Precambrian quartz arenite sandstone that rise abruptly from the jungle, giving rise to spectacular natural scenery. Auyantepui is the source of Angel Falls, the world's tallest waterfall. Morphology These table-top mountains are the remains of a large sandstone plateau that once covered the granite basement complex between the north border of the Amazon Basin and the Orinoco, between the Atlantic coast and the Rio Negro. T ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Taxa Named By George Albert Boulenger
In biology, a taxon (back-formation from ''taxonomy''; plural taxa) is a group of one or more populations of an organism or organisms seen by taxonomists to form a unit. Although neither is required, a taxon is usually known by a particular name and given a particular ranking, especially if and when it is accepted or becomes established. It is very common, however, for taxonomists to remain at odds over what belongs to a taxon and the criteria used for inclusion. If a taxon is given a formal scientific name, its use is then governed by one of the nomenclature codes specifying which scientific name is correct for a particular grouping. Initial attempts at classifying and ordering organisms (plants and animals) were set forth in Carl Linnaeus's system in ''Systema Naturae'', 10th edition (1758), as well as an unpublished work by Bernard and Antoine Laurent de Jussieu. The idea of a unit-based system of biological classification was first made widely available in 1805 in the intro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Amphibians Described In 1895
Amphibians are four-limbed and ectothermic vertebrates of the class Amphibia. All living amphibians belong to the group Lissamphibia. They inhabit a wide variety of habitats, with most species living within terrestrial, fossorial, arboreal or freshwater aquatic ecosystems. Thus amphibians typically start out as larvae living in water, but some species have developed behavioural adaptations to bypass this. The young generally undergo metamorphosis from larva with gills to an adult air-breathing form with lungs. Amphibians use their skin as a secondary respiratory surface and some small terrestrial salamanders and frogs lack lungs and rely entirely on their skin. They are superficially similar to reptiles like lizards but, along with mammals and birds, reptiles are amniotes and do not require water bodies in which to breed. With their complex reproductive needs and permeable skins, amphibians are often ecological indicators; in recent decades there has been a dramatic decline ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Guayana Highlands
Guyana is a country in the Guianas, South America. Guyana, Guiana, or Guayana may refer to: * French Guiana, an overseas department of France in the Guianas * The Guianas, a region in the north of South America * Guayana Region, an administrative region of Venezuela * Ciudad Guayana, a city in Bolívar State, Venezuela * Guayana language or Wayaná, an extinct Jê language of southern Brazil * Guayana or Wayana language, a Cariban language spoken in Surinam, French Guiana, and Brazil * Guiana Island, Antigua and Barbuda * Guyana (1966–1970) * Guiana Highlands, a mountainous area in the Guianas * Guiana Shield, a geological craton of precambrian crust See also * * * * Guyenne * Guinea (other) Guinea (''Guinée'', in French) or Guinea-Conakry is a republic in West Africa, independent since 1958. Guinea may also refer to: Places West Africa Nations * Equatorial Guinea, a country in Central Africa, formerly the colony of Spanish Guinea ... * Wayana people {{ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Amphibians Of Venezuela
Amphibians are four-limbed and ectothermic vertebrates of the class Amphibia. All living amphibians belong to the group Lissamphibia. They inhabit a wide variety of habitats, with most species living within terrestrial, fossorial, arboreal or freshwater aquatic ecosystems. Thus amphibians typically start out as larvae living in water, but some species have developed behavioural adaptations to bypass this. The young generally undergo metamorphosis from larva with gills to an adult air-breathing form with lungs. Amphibians use their skin as a secondary respiratory surface and some small terrestrial salamanders and frogs lack lungs and rely entirely on their skin. They are superficially similar to reptiles like lizards but, along with mammals and birds, reptiles are amniotes and do not require water bodies in which to breed. With their complex reproductive needs and permeable skins, amphibians are often ecological indicators; in recent decades there has been a dramatic decline ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Amphibians Of Guyana
Amphibians are four-limbed and ectothermic vertebrates of the class Amphibia. All living amphibians belong to the group Lissamphibia. They inhabit a wide variety of habitats, with most species living within terrestrial, fossorial, arboreal or freshwater aquatic ecosystems. Thus amphibians typically start out as larvae living in water, but some species have developed behavioural adaptations to bypass this. The young generally undergo metamorphosis from larva with gills to an adult air-breathing form with lungs. Amphibians use their skin as a secondary respiratory surface and some small terrestrial salamanders and frogs lack lungs and rely entirely on their skin. They are superficially similar to reptiles like lizards but, along with mammals and birds, reptiles are amniotes and do not require water bodies in which to breed. With their complex reproductive needs and permeable skins, amphibians are often ecological indicators; in recent decades there has been a dramatic decline ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Amphibians Of Brazil
Amphibians are four-limbed and ectothermic vertebrates of the class Amphibia. All living amphibians belong to the group Lissamphibia. They inhabit a wide variety of habitats, with most species living within terrestrial, fossorial, arboreal or freshwater aquatic ecosystems. Thus amphibians typically start out as larvae living in water, but some species have developed behavioural adaptations to bypass this. The young generally undergo metamorphosis from larva with gills to an adult air-breathing form with lungs. Amphibians use their skin as a secondary respiratory surface and some small terrestrial salamanders and frogs lack lungs and rely entirely on their skin. They are superficially similar to reptiles like lizards but, along with mammals and birds, reptiles are amniotes and do not require water bodies in which to breed. With their complex reproductive needs and permeable skins, amphibians are often ecological indicators; in recent decades there has been a dramatic decline ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Frogs Of South America
A frog is any member of a diverse and largely carnivorous group of short-bodied, tailless amphibians composing the order Anura (ανοὐρά, literally ''without tail'' in Ancient Greek). The oldest fossil "proto-frog" ''Triadobatrachus'' is known from the Early Triassic of Madagascar, but molecular clock dating suggests their split from other amphibians may extend further back to the Permian, 265 million years ago. Frogs are widely distributed, ranging from the tropics to subarctic regions, but the greatest concentration of species diversity is in tropical rainforest. Frogs account for around 88% of extant amphibian species. They are also one of the five most diverse vertebrate orders. Warty frog species tend to be called toads, but the distinction between frogs and toads is informal, not from taxonomy or evolutionary history. An adult frog has a stout body, protruding eyes, anteriorly-attached tongue, limbs folded underneath, and no tail (the tail of tailed frogs is an ex ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Oreophrynella
''Oreophrynella'', commonly known as bush toads, is a genus of true toads native to the tepuis of southern Venezuela and adjacent Guyana. The distribution of some species is restricted to a couple of tepuis or even a single tepui, as in the case of '' Oreophrynella weiassipuensis'', which occurs on Wei-Assipu-tepui. Description Species of the genus ''Oreophrynella'' are small frogs, less than in snout–vent length. They are characterized by opposable digits of the foot, dorsal skin that bears tubercules, and direct development (i.e., there is no free-living larval stage). The presence of opposable digits, unique among bufonids, in combination with an extension of the interdigital integument and the relative length/orientation of the digits, is likely to be an adaptation to facilitate life on rocky tepui summits and an exaptation to arboreality The genus also displays cranial Standard anatomical terms of location are used to unambiguously describe the anatomy of animals, i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Monte Roraima National Park
Mount Roraima National Park ( pt, Parque Nacional do Monte Roraima) is a national park in the state of Roraima, northern Brazil. It includes the Brazilian section of Mount Roraima, and other mountains along the borders with Venezuela and Guyana, and a diverse environment including tropical rainforest and savanna. The park is fully contained within the Raposa Serra do Sol indigenous territory, and has the dual role of conserving the environment and supporting the constitutional rights of the indigenous people. Location Monte Roraima National Park is in the Uiramutã municipality of the state of Roraima. It has an area of . The park includes part of the Cotingo River basin, where plans have been made for a hydro-electric plant. The area has high potential for mining, agriculture, ranching and ecotourism, and has resulting tension between the strong Indian population and the ranchers and settlers. The park includes part of the Pacaraima Mountains, which separate Brazil from Venezu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Canaima National Park
Canaima National Park ( es, Parque Nacional Canaima) is a park in south-eastern Venezuela that roughly occupies the same area as the Gran Sabana region. It is located in Bolívar State, reaching the borders with Brazil and Guyana. History Canaima National Park was established on 12 June 1962. As early as 1990, the countries that participate in the Amazonian Cooperation Treaty had recommended expanding the Canaima National Park southward to connect it with Monte Roraima National Park in Brazil, with coordinated management of tourism, research and conservation. In 1994, the Canaima National Park was named a World Heritage Site by UNESCO. Location Canaima National Park is the second largest park in Venezuela, after Parima-Tapirapecó, and sixth biggest national park in the world. It is roughly the same size as Belgium or Maryland. The park protects part of the Guayanan Highlands moist forests ecoregion. About 65% of the park is occupied by plateaus of rock called tepuis, whic ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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