|
Variable Bush Viper
''Atheris squamigera'' (common names: green bush viper, Mallow D, Ludwig D, Nilson G (2003). ''True Vipers: Natural History and Toxinology of Old World Vipers''. Malabar, Florida: Krieger Publishing Company. 359 pp. . Spawls S, Branch B (1995). ''The Dangerous Snakes of Africa''. Dubai: Oriental Press/Ralph Curtis Books. 192 pp. . variable bush viper, leaf viper, Hallowell's green tree viper, and others) is a venomous viper species endemic to west and central Africa. No subspecies are currently recognized. Description ''Atheris squamigera'' grows to an average total length (body + tail) of 46 to 60 cm (about 18 to 24 inches), with a maximum total length that sometimes exceeds 78 cm (about 31 inches). Females are usually larger than males. The head is broad and flat, distinct from the neck. The mouth has a very large gape. The head is thickly covered with keeled, imbricate scales. The rostral scale is not visible from above. A very small scale just above the rostral ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Edward Hallowell (herpetologist)
Edward Hallowell (1808 – February 20, 1860) was an American herpetologist and physician. He studied and practiced medicine in Philadelphia. He also was a renowned herpetologist who described 61 new species of reptiles. In 1851, Hallowell was elected as a member of the American Philosophical Society The American Philosophical Society (APS), founded in 1743 in Philadelphia, is a scholarly organization that promotes knowledge in the sciences and humanities through research, professional meetings, publications, library resources, and communit .... Hallowell is commemorated in the scientific names of two species of frogs: '' Hyla hallowellii'' and '' Leptodactylus hallowelli. Cope ED (1862). "On some new and little known American ANURA". ''Proc. Acad. Nat. Sci. Philadelphia'' 14: 151-159. ("... dedicated to the memory of the late Dr. Edward Hallowell, whom the author holds in grateful and respectful recollection ...", p. 153). Publications in the ''Proceedings of the Academy ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Göran Nilson
Göran or Jöran (both pronounced ) is the Swedish form of George, not to be confused with the Slavic Goran. Notable people with the name include: * Göran Andersson, Swedish sport sailor *Göran Bror Benny Andersson Swedish musician, composer, and member of the group ABBA * Sven-Göran Eriksson, Swedish football coach * Göran Folkestad, Swedish musician * Göran Gentele, Swedish actor * Göran Gunnarsson, Swedish lieutenant general *Göran Hägglund, Swedish politician, former leader of the Christian Democrats *Jöran Hägglund, Swedish politician, secretary of the Centre party *Göran Högosta, Swedish ice hockey player * Göran Johansson, Swedish politician, mayor of Gothenburg *Göran Kropp, Swedish adventurer and mountaineer * Göran Lagerberg, Swedish musician *Göran Lennmarker, Swedish politician * Göran Magnusson (1939–2010), Swedish politician * Göran Malmqvist, Swedish linguist, literary historian *Göran Mårtensson, Swedish Army lieutenant general *Göran Sà ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Labial Scales
The labial scales are the scales of snakes and other scaled reptiles that border the mouth opening. These do not include the median scales on the upper and lower jawsWright AH, Wright AA. 1957. Handbook of Snakes. Comstock Publishing Associates (7th printing, 1985). 1105 pp. . (rostral and mental scales). The term ''labial'' originates from ''Labium'' (Latin for "lip"), which refers to any lip-like structure. In snakes, there are two different types of labial scales: supralabials and sublabials. The numbers of these scales present, and sometimes the shapes and sizes, are some of many characteristics used to differentiate species from one another. There are two different types of labial scales: * Supralabials are the scales that form part of the upper lip. Also called upper labials. * Sublabials are the scales that form part of the lower lip. Also called infralabials or lower labials. Related scales * Rostral scale: median scale on the tip of the snout bordering the mouth openi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Circumorbital Scales
In scaled reptiles, the ocular scales are those forming the margin of the eye.Wright AH, Wright AA. 1957. ''Handbook of Snakes''. Comstock Publishing Associates (7th printing, 1985). 1105 pp. . The name originates from the term ''oculus'' which is Latin for 'eye' and, in the broadest sense, refers to a scale associated with the eye. The numbers of these scales present, and sometimes the shapes and sizes, are some of many characteristics used to differentiate species from one another. Prefixes are usually included to indicate the positions or locations of the individual scales:Mallow D, Ludwig D, Nilson G. 2003. ''True Vipers: Natural History and Toxinology of Old World Vipers''. Malabar, Florida: Krieger Publishing Company. 359 pp. .Smith MA. 1943. ''The Fauna of British India, Ceylon and Burma including the whole of the Indo-Chinese Sub-region, Reptilia and Amphibia Vol III-Serpentes''. Taylor and Francis, London. page 29. * Preocular scales, or preoculars, are those lying direc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Interorbital Scales
In snakes, the interorbital scales, or intersupraoculars, are the scales on the top of the head between the plates surmounting the eyesWright AH, Wright AA. 1957. Handbook of Snakes. Comstock Publishing Associates (7th printing, 1985). 1105 pp. . (the supraoculars). See also * Supraocular scales * Snake scales Snakes are elongated, limbless, carnivorous reptiles of the suborder Serpentes . Like all other squamates, snakes are ectothermic, amniote vertebrates covered in overlapping scales. Many species of snakes have skulls with several more joints ... References {{Reflist Snake scales ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nasal Scale
In reptiles, the nasal scale refers to the scale that encloses the nostril.Mallow D, Ludwig D, Nilson G. 2003. True Vipers: Natural History and Toxinology of Old World Vipers. Malabar, Florida: Krieger Publishing Company. 359 pp. . Sometimes this scale is paired (divided). In such cases, the anterior half is referred to as the prenasal and the posterior half is referred to as the postnasal.Wright AH, Wright AA. 1957. Handbook of Snakes. Comstock Publishing Associates (7th printing, 1985). 1105 pp. . Supranasal scales are located above the nasal scale. See also * Snake scales * Anatomical terms of location * Nasal (other) Nasal is an adjective referring to the nose, part of human or animal anatomy. It may also be shorthand for the following uses in combination: * With reference to the human nose: ** Nasal administration, a method of pharmaceutical drug delivery * ... References {{Reflist Snake scales ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rostral Scale
The rostral scale, or rostral, in snakes and other scaled reptiles is the median plate on the tip of the snout that borders the mouth opening. Wright AH, Wright AA (1957). ''Handbook of Snakes of the United States and Canada''. Ithaca and London: Comstock Publishing Associates. (7th printing, 1985). 1,105 pp. (in two volumes). . It corresponds to the mental scale in the lower jaw. The term pertains to the rostrum, or nose. In snakes, the shape and size of this scale is one of many characteristics used to differentiate species from one another. Related scales *Nasorostral scale *Mental scale *Labial scales See also *Snake scales *Anatomical terms of location 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 pro ... References {{Reflist Snake scales ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Subspecies
In biological classification, subspecies is a rank below species, used for populations that live in different areas and vary in size, shape, or other physical characteristics (morphology), but that can successfully interbreed. Not all species have subspecies, but for those that do there must be at least two. Subspecies is abbreviated subsp. or ssp. and the singular and plural forms are the same ("the subspecies is" or "the subspecies are"). In zoology, under the International Code of Zoological Nomenclature, the subspecies is the only taxonomic rank below that of species that can receive a name. In botany and mycology, under the International Code of Nomenclature for algae, fungi, and plants, other infraspecific ranks, such as variety, may be named. In bacteriology and virology, under standard bacterial nomenclature and virus nomenclature, there are recommendations but not strict requirements for recognizing other important infraspecific ranks. A taxonomist decides whether ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Africa
Africa is the world's second-largest and second-most populous continent, after Asia in both cases. At about 30.3 million km2 (11.7 million square miles) including adjacent islands, it covers 6% of Earth's total surface area and 20% of its land area.Sayre, April Pulley (1999), ''Africa'', Twenty-First Century Books. . With billion people as of , it accounts for about of the world's human population. Africa's population is the youngest amongst all the continents; the median age in 2012 was 19.7, when the worldwide median age was 30.4. Despite a wide range of natural resources, Africa is the least wealthy continent per capita and second-least wealthy by total wealth, behind Oceania. Scholars have attributed this to different factors including geography, climate, tribalism, colonialism, the Cold War, neocolonialism, lack of democracy, and corruption. Despite this low concentration of wealth, recent economic expansion and the large and young population make Afr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Endemism
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] |
Species
In biology, a species is the basic unit of classification and a taxonomic rank of an organism, as well as a unit of biodiversity. A species is often defined as the largest group of organisms in which any two individuals of the appropriate sexes or mating types can produce fertile offspring, typically by sexual reproduction. Other ways of defining species include their karyotype, DNA sequence, morphology, behaviour or ecological niche. In addition, paleontologists use the concept of the chronospecies since fossil reproduction cannot be examined. The most recent rigorous estimate for the total number of species of eukaryotes is between 8 and 8.7 million. However, only about 14% of these had been described by 2011. All species (except viruses) are given a two-part name, a "binomial". The first part of a binomial is the genus to which the species belongs. The second part is called the specific name or the specific epithet (in botanical nomenclature, also sometimes i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Viperinae
The Viperinae, or viperines, are a subfamily of vipers endemic to Europe, Asia and Africa. They are distinguished by their lack of the heat-sensing pit organs that characterize their sister group, the subfamily Crotalinae. Currently, 13 genera are recognized. Most are tropical and subtropical, although one species, ''Vipera berus'', even occurs within the Arctic Circle. Like all vipers, they are venomous. The common names "pitless vipers", "true vipers", "Old World vipers",Mallow D, Ludwig D, Nilson G. 2003. ''True Vipers: Natural History and Toxinology of Old World Vipers''. Malabar, Florida: Krieger Publishing Company, Malabar. 359 pp. . and "true adders"U.S. Navy. 1991. ''Poisonous Snakes of the World''. US Govt. New York: Dover Publications Inc. 203 pp. . all refer to this group. Description Members of this subfamily range in size from ''Bitis schneideri'', which grows to a maximum total length (body and tail) of , to the Gaboon viper, which reaches a maximum total length of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
.svg "Click for more on -> Africa")
.jpg "Click for more on -> Endemism")
