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Quasipaa Acanthophora
''Quasipaa acanthophora'' is a species of frog in the family Dicroglossidae. It is endemic to northern Vietnam and know from two locations, its type locality Mau Son in the Lang Son Province, and the Tay Yen Tu Nature Reserve in the Bac Giang Province. It is a sibling species of ''Quasipaa spinosa''. Description Adult males in the type series measured and the sole adult female in snout–vent length (SVL); two females from the Tay Yen Tu Nature Reserve measured SVL. The head is rather large and wider than it is long. The snout is rounded and slightly protruding. The canthus rostralis is indistinct, as is the tympanum, but the supratympanic fold is prominent. The fingers and toes have no discs, but the toes are fully webbed. Skin on the dorsum is shagreened and has regularly disposed glandular warts. In living specimens, the dorsum is light brown and has grey spots. The supratympanic fold is darker, and the lips bear vertical bars. The limbs have transverse bars on the do ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Annemarie Ohler
Annemarie Ohler is an Austrian herpetologist and professor who concentrates on the taxonomy of amphibians. She has 3,602 citations and an h-index of 36. Life and work After graduating from the federal higher boarding school in Traunsee Castle, Upper Austria, Ohler studied zoology, botany and biochemistry at the University of Vienna, where she wrote a dissertation in 1987 on the larval development of the pond frog ('' Pelophylax kl. esculentus''), a hybridogenetic hybrid from the complex of forms of water frogs ('' Pelophylax'') and received her Ph.D. During her studies she had a one-year research stay at the Pierre and Marie Curie University in Paris, where she studied experimental embryology. In 1988 she obtained the Diplôme d'études approfondies (DEA) from the University of Paris VII. Since 2008 she has been a professor at the Laboratory of Reptiles and Amphibians at the National Museum of Natural History, France. Ohler is a specialist in the families of the Asian to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Canthus Rostralis
In snakes and amphibians, the canthus, canthal ridge or ''canthus rostralis'',Spawls S, Branch B. 1995. ''The Dangerous Snakes of Africa''. Ralph Curtis Books. Dubai: Oriental Press. 192 pp. . is the angle between the flat crown of the head and the side of the head between the eye and the snout,Mallow D, Ludwig D, Nilson G. 2003. ''True Vipers: Natural History and Toxinology of Old World Vipers''. Krieger Publishing Company, Malabar, Florida. . or more specifically, between the supraocular scale and the rostral scale. It is defined as a sharp ridge in many viperids, but is rounded in most rattlesnakes Rattlesnakes are venomous snakes that form the genera '' Crotalus'' and ''Sistrurus'' of the subfamily Crotalinae (the pit vipers). All rattlesnakes are vipers. Rattlesnakes are predators that live in a wide array of habitats, hunting small ani ..., for example.Campbell JA, Lamar WW. 2004. The Venomous Reptiles of the Western Hemisphere. Comstock Publishing Associates, Ithaca and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Endemic Fauna Of Vietnam
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] |
Quasipaa
''Quasipaa'' is a genus of frogs in the family Dicroglossidae. The genus has no established common name, but many individual species are referred to as ''spiny frogs''. They occur in East and Southeast Asia, from Thailand and Cambodia to southern and eastern China. Taxonomy ''Quasipaa'' was first proposed as a subgenus of ''Paa'' (now considered to belong to ''Nanorana''). It was subsequently raised to the level of genus, and molecular phylogenetic analyses have corroborated the monophyly of ''Quasipaa''. Many individual species were originally described in genus ''Rana''. Even after splitting the very wide ''Rana'' into smaller taxa, frogs now in ''Quasipaa'' continued to belong to the true frog family (Ranidae), at times as subfamily Dicroglossinae, until Dicroglossinae was raised to the family level (i.e., Dicroglossidae). The taxonomy of Dicroglossidae is far from settled yet. Species There are 11 species in this genus: Conservation and use The International Union for Co ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Above Sea Level
Height above mean sea level is a measure of the vertical distance (height, elevation or altitude) of a location in reference to a historic mean sea level taken as a vertical datum. In geodesy, it is formalized as '' orthometric heights''. The combination of unit of measurement and the physical quantity (height) is called " metres above mean sea level" in the metric system, while in United States customary and imperial units it would be called " feet above mean sea level". Mean sea levels are affected by climate change and other factors and change over time. For this and other reasons, recorded measurements of elevation above sea level at a reference time in history might differ from the actual elevation of a given location over sea level at a given moment. Uses Metres above sea level is the standard measurement of the elevation or altitude of: * Geographic locations such as towns, mountains and other landmarks. * The top of buildings and other structures. * Flying obje ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
René Léon Bourret
René Léon Bourret (28 January 1884, Nérac, (Lot-et-Garonne) – 28 July 1957) was a French herpetologist and geologist. In 1900, he arrived in French Indochina as a member of the military. Beginning in 1907, he worked as a surveyor for the "cadastral survey". From 1919 to 1925, he performed geological surveys in Indochina, becoming a professor in 1925 at the ''École Supérieure des Sciences'', ''Université Indochinoise'' in Hanoi. Two years later, he released his first zoological publication, a general review on vertebrates native to Indochina. During the ensuing years, he published three major works on herpetofauna native to Indochina: monographs on snakes (1936), chelonians (1941), and amphibians (1942). During the Japanese occupation of Indochina, he remained in Hanoi, where he continued regular publications. In 1947, he returned to France and settled in Toulouse. Most of his specimens are preserved in museums in Toulouse and Paris. These herpetological species/subspecies ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Species Description
A species description is a formal description of a newly discovered species, usually in the form of a scientific paper. Its purpose is to give a clear description of a new species of organism and explain how it differs from species that have been described previously or are related. In order for species to be validly described, they need to follow guidelines established over time. Zoological naming requires adherence to the ICZN code, plants, the ICN, viruses ICTV, and so on. The species description often contains photographs or other illustrations of type material along with a note on where they are deposited. The publication in which the species is described gives the new species a formal scientific name. Some 1.9 million species have been identified and described, out of some 8.7 million that may actually exist. Millions more have become extinct throughout the existence of life on Earth. Naming process A name of a new species becomes valid (available in zo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gular Skin
Gular skin (throat skin), in ornithology, is an area of featherless skin on birds that joins the lower mandible of the beak (or ''bill'') to the bird's neck. Other vertebrate taxa may have a comparable anatomical structure that is referred to as either a gular sac, throat sac, vocal sac or gular fold. In birds Gular skin can be very prominent, for example in members of the order Phalacrocoraciformes as well as in pelicans (which likely share a common ancestor). In many species, the gular skin forms a flap, or gular pouch, which is generally used to store fish and other prey while hunting. In cormorants, the gular skin is often colored, contrasting with the otherwise plain black or black-and-white appearance of the bird. This presumably serves some function in social signalling, since the colors become more pronounced in breeding adults. In frigatebirds, the gular skin (or gular sac or throat sac) is used dramatically. During courtship display, the male forces air into the sa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dorsum (anatomy)
Standard anatomical terms of location are used to unambiguously describe the anatomy of animals, including humans. The terms, typically derived from Latin or Greek roots, describe something in its standard anatomical position. This position provides a definition of what is at the front ("anterior"), behind ("posterior") and so on. As part of defining and describing terms, the body is described through the use of anatomical planes and anatomical axes. The meaning of terms that are used can change depending on whether an organism is bipedal or quadrupedal. Additionally, for some animals such as invertebrates, some terms may not have any meaning at all; for example, an animal that is radially symmetrical will have no anterior surface, but can still have a description that a part is close to the middle ("proximal") or further from the middle ("distal"). International organisations have determined vocabularies that are often used as standard vocabularies for subdisciplines of ana ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tympanum (anatomy)
The tympanum is an external hearing structure in animals such as mammals, birds, some reptiles, some amphibians and some insects. Using sound, vertebrates and many insects are capable of sensing their prey, identifying and locating their predators, warning other individuals, and locating potential mates and rivals by hearing the intentional or unintentional sounds they make. In general, any animal that reacts to sounds or communicates by means of sound, needs to have an auditory mechanism. This typically consists of a membrane capable of vibration known as the tympanum, an air-filled chamber and sensory organs to detect the auditory stimuli. Anurans In frogs and toads, the tympanum is a large external oval shape membrane made up of nonglandular skin. It is located just behind the eye. It does not process sound waves; it simply transmits them to the inner parts of the amphibian's ear, which is protected from the entry of water and other foreign objects. A frog's ear drum wo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Type Series
In biology, a type is a particular specimen (or in some cases a group of specimens) of an organism to which the scientific name of that organism is formally attached. In other words, a type is an example that serves to anchor or centralizes the defining features of that particular taxon. In older usage (pre-1900 in botany), a type was a taxon rather than a specimen. A taxon is a scientifically named grouping of organisms with other like organisms, a set that includes some organisms and excludes others, based on a detailed published description (for example a species description) and on the provision of type material, which is usually available to scientists for examination in a major museum research collection, or similar institution. Type specimen According to a precise set of rules laid down in the International Code of Zoological Nomenclature (ICZN) and the International Code of Nomenclature for algae, fungi, and plants (ICN), the scientific name of every taxon is almost al ... [...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] |
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