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Odontobatrachus Natator
''Odontobatrachus natator'', also known as the saber-toothed frog, Sierra Leone water frog, common toothed frog, or simply swimmer, is a species of frog in the family Odontobatrachidae. It is endemic to West Africa and occurs in Guinea, Liberia, and Sierra Leone. Earlier records from Ivory Coast refer to ''Odontobatrachus arndti''. ''Odontobatrachus natator'' occurs in forested, hilly areas in or near water, breeding in fast-flowing streams. The eggs are laid on land. The tadpole adhere themselves to rocks in waterfalls and rapids by means of suckers. It is patchily distributed but can locally be very abundant. It is probably threatened by the loss of forest habitat caused by agricultural development, logging, and expanding human settlements, and locally also by mining activities. It is present in a few protected areas. References amphibians described in 1905 amphibians of West Africa fauna of Guinea fauna of Liberia fauna of Sierra Leone natator The Australian fla ... [...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. Gün ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Frog
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 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Endemic
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 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Odontobatrachus Arndti
''Odontobatrachus'' is a genus of frogs comprising the family Odontobatrachidae. In a 2014 research project Barej, Rödel, Loader & Schmitz separated the genus from the established genus ''Petropedetes'' and separated the new family from the established family Petropedetidae. Taxonomy and affinities The species had originally been assigned to the genus ''Petropedetes'' in the Petropedetidae, a family of so-called torrent frogs of Africa, so the type species is ''Petropedetes natator'' Boulenger, 1905. However, recent morphological and genomic investigation showed the species not only to be cladistically alien to the Petropedetidae, but to all other existing anuran families as well. Furthermore, the family Odontobatrachidae turned out to be fairly ancient, estimated to have originated in the mid-Cretaceous period, some 80 Ma – 90 Ma ago. Consequently, a new family and genus were assigned, respectively Odontobatrachidae and ''Odontobatrachus''. The details of the evolutionary ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tadpole
A tadpole is the larval stage in the biological life cycle of an amphibian. Most tadpoles are fully aquatic, though some species of amphibians have tadpoles that are terrestrial. Tadpoles have some fish-like features that may not be found in adult amphibians such as a lateral line, gills and swimming tails. As they undergo metamorphosis, they start to develop functional lungs for breathing air, and the diet of tadpoles changes drastically. A few amphibians, such as some members of the frog family Brevicipitidae, undergo direct development i.e., they do not undergo a free-living larval stage as tadpoles instead emerging from eggs as fully formed "froglet" miniatures of the adult morphology. Some other species hatch into tadpoles underneath the skin of the female adult or are kept in a pouch until after metamorphosis. Having no hard skeletons, it might be expected that tadpole fossils would not exist. However, traces of biofilms have been preserved and fossil tadpol ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Amphibians Described In 1905
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 de ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Amphibians Of West Africa
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 dramat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fauna Of Guinea
The wildlife of Guinea is very diverse due to the wide variety of different habitats. The southern part of the country lies within Guinean Forests of West Africa Biodiversity Hotspot, while the north-east is characterized by dry savanna woodlands. Ecoregions of Guinea are Western Guinean lowland forest, Guinean montane forest, Guinean forest-savanna mosaic, West Sudanian Savanna, and Guinean mangroves. Declining populations of large mammals are restricted to uninhabited distant parts of parks and reserves, because of the inappropriate nature conservation. A noteworthy NGO specialized to nature conservation is the Guinean Parks. Famous strongholds of Guinean wildlife are Pinselly Classified Forest, National Park of Upper Niger, Badiar National Park, Mount Nimba Strict Nature Reserve, Ziama Massif, Bossou Hills Reserve, and Diécké Classified Forest. Fauna Mammals * African buffalo *African forest buffalo *African forest elephant *Bushbuck *Guinea baboon *Giant forest hog ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fauna Of Liberia
The wildlife of Liberia consists of the flora and fauna of the Republic of Liberia. This West African nation has a long Atlantic coastline and a range of habitat types, with a corresponding diversity of plants and animals. Liberia is considered a biodiversity hotspot and has more intact forests characteristic of the Upper Guinea Massif than do neighbouring countries. There are 2000 species of vascular plants (including 225 tree species), approximately 140 species of mammals, and over 600 species of birds. Geography The country lies close to the equator with a long coastline on the Atlantic Ocean. The terrain consists of flat or undulating coastal plains, which rise to a rolling plateau and low mountains in the northeast. A number of short rivers flow from northeast to southwest. The coastal area is characterised by swamps and mangrove forests, while inland the tropical forests give way to grassland on the drier plateau area. The climate is equatorial with some rain all year roun ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fauna Of Sierra Leone
The wildlife of Sierra Leone is very diverse due to the variety of different habitats within the country. Sierra Leone is home to approximately 2090 known higher plant species, 147 known species of mammals, 172 known breeding bird species, 67 known reptile species, 35 known amphibian species and 99 known species of fish. Mammals There are approximately 147 known species of wild mammals within Sierra Leone. Members of fourteen orders of placental mammals inhabit Sierra Leone. The endangered pygmy hippopotamus has territories around the islands on the Moa River and is widespread in the Gola Forest area. There are three species of wild pig that occur across Sierra Leone: the wart hog, the giant forest hog and the red river hog. Sierra Leone has 15 identified species of primates that include bushbaby, monkeys and a great ape, the common chimpanzee which is Sierra Leone's largest primate. Chimpanzees are found across the country with the 2010 chimpanzee census estimated a wild po ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Odontobatrachus
''Odontobatrachus'' is a genus of frogs comprising the family Odontobatrachidae. In a 2014 research project Barej, Rödel, Loader & Schmitz separated the genus from the established genus ''Petropedetes'' and separated the new family from the established family Petropedetidae. Taxonomy and affinities The species had originally been assigned to the genus ''Petropedetes'' in the Petropedetidae, a family of so-called torrent frogs of Africa, so the type species is ''Petropedetes natator'' Boulenger, 1905. However, recent morphological and genomic investigation showed the species not only to be cladistically alien to the Petropedetidae, but to all other existing anuran families as well. Furthermore, the family Odontobatrachidae turned out to be fairly ancient, estimated to have originated in the mid-Cretaceous period, some 80 Ma – 90 Ma ago. Consequently, a new family and genus were assigned, respectively Odontobatrachidae and ''Odontobatrachus''. The details of the evolutionary ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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