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Meristogenys Whiteheadi
''Meristogenys whiteheadi'' is a species of frog in the family Ranidae. It is endemic to Borneo and found in both Indonesia (Kalimantan) and Malaysia (western Sabah). '' Meristogenys stigmachilus'' and ''Meristogenys stenocephalus'', described as new species in 2011, were formerly included in this species. Owing to the difficulty of distinguishing these species under field conditions, the exact range of this species is uncertain. Its common name is Whitehead's Borneo frog or Whitehead's torrent frog. (includes photographs) Etymology This species is named after John Whitehead, explorer who collected the type series from Mount Kinabalu, Malaysia. Description The dorsum is light brown to greenish dark brown. The lips are dark grey to black. The iris is bicoloured, with a reddish orange horizontal band in the middle surrounded by whitish brown bands above and below. The centre of the tympanum usually has a small light circle. The limbs have alternating light- and dark-brown dors ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Crocker Range
Crocker Range ( ms, Banjaran Crocker) is a mountain range in West Coast Division of Sabah, Malaysia that separates the west and east coast of Sabah. At an average height of , it is the highest mountain range in the state with the range is named after the British administrator in North Borneo, William Maunder Crocker. Geology The range is made up of uplifted and folded sedimentary rocks consisted of weathered soft sandstones and shales. The highest point is Mount Kinabalu at . Most of the park boundary lies above with its lowlands used for cash crops and paddy field. On the east of the range located the Tambunan Valley at which are mainly terraced paddy fields and groves of bamboos border the north-eastern part of the protected park. The park area is important as a water catchment to supply water into various river in the west coast and interior districts of Sabah including Papar River, Kimanis River, Bongawan River, Membakut River, Padas River and Melalap River that flow wes ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Iris (anatomy)
In humans and most mammals and birds, the iris (plural: ''irides'' or ''irises'') is a thin, annular structure in the eye, responsible for controlling the diameter and size of the pupil, and thus the amount of light reaching the retina. Eye color is defined by the iris. In optical terms, the pupil is the eye's aperture, while the iris is the diaphragm. Structure The iris consists of two layers: the front pigmented fibrovascular layer known as a stroma and, beneath the stroma, pigmented epithelial cells. The stroma is connected to a sphincter muscle (sphincter pupillae), which contracts the pupil in a circular motion, and a set of dilator muscles ( dilator pupillae), which pull the iris radially to enlarge the pupil, pulling it in folds. The sphincter pupillae is the opposing muscle of the dilator pupillae. The pupil's diameter, and thus the inner border of the iris, changes size when constricting or dilating. The outer border of the iris does not change size. The constricti ... [...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 1887
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] |
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