|
Dibatag
The dibatag (''Ammodorcas clarkei''), or Clarke's gazelle, is a medium-sized slender antelope native to Ethiopia and Somalia. Though not a true gazelle, it is similarly marked, with long legs and neck. It is often confused with the gerenuk due to their striking resemblance. The typical head-and-body length is about . They stand up to about . Male dibatag weigh between , whereas females range from . The length of the curved horns, present only on males, is typically between . The upper parts are gray to fawn, while the dorsal and lateral areas are cinnamon to rufous (reddish brown). The underparts, rump and the insides of the legs are all white. While markings are visible on the face, there are none on the flanks or the buttocks. Dibatag are alert and secretive, and their brown coat provides an excellent camouflage, making the dibatag one of the antelopes most difficult to hunt. They are diurnal animals, and navigate in very small herds. Both sexes attain sexual maturity at 12 t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ammodorcas Clarkei Skull 1891
The dibatag (''Ammodorcas clarkei''), or Clarke's gazelle, is a medium-sized slender antelope native to Ethiopia and Somalia. Though not a true gazelle, it is similarly marked, with long legs and neck. It is often confused with the gerenuk due to their striking resemblance. The typical head-and-body length is about . They stand up to about . Male dibatag weigh between , whereas females range from . The length of the curved horns, present only on males, is typically between . The upper parts are gray to fawn, while the dorsal and lateral areas are cinnamon to rufous (reddish brown). The underparts, rump and the insides of the legs are all white. While markings are visible on the face, there are none on the flanks or the buttocks. Dibatag are alert and secretive, and their brown coat provides an excellent camouflage, making the dibatag one of the antelopes most difficult to hunt. They are diurnal animals, and navigate in very small herds. Both sexes attain sexual maturity at 12 t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Oldfield Thomas
Michael Rogers Oldfield Thomas (21 February 1858 – 16 June 1929) was a British zoologist. Career Thomas worked at the Natural History Museum on mammals, describing about 2,000 new species and subspecies for the first time. He was appointed to the museum secretary's office in 1876, transferring to the zoological department in 1878. In 1891, Thomas married Mary Kane, daughter of Sir Andrew Clark, heiress to a small fortune, which gave him the finances to hire mammal collectors and present their specimens to the museum. He also did field work himself in Western Europe and South America. His wife shared his interest in natural history, and accompanied him on collecting trips. In 1896, when William Henry Flower took control of the department, he hired Richard Lydekker Richard Lydekker (; 25 July 1849 – 16 April 1915) was an English naturalist, geologist and writer of numerous books on natural history. Biography Richard Lydekker was born at Tavistock Square in London. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Scientific Name
In taxonomy, binomial nomenclature ("two-term naming system"), also called nomenclature ("two-name naming system") or binary nomenclature, is a formal system of naming species of living things by giving each a name composed of two parts, both of which use Latin grammatical forms, although they can be based on words from other languages. Such a name is called a binomial name (which may be shortened to just "binomial"), a binomen, name or a scientific name; more informally it is also historically called a Latin name. The first part of the name – the '' generic name'' – identifies the genus to which the species belongs, whereas the second part – the specific name or specific epithet – distinguishes the species within the genus. For example, modern humans belong to the genus ''Homo'' and within this genus to the species ''Homo sapiens''. ''Tyrannosaurus rex'' is likely the most widely known binomial. The ''formal'' introduction of this system of naming species is credit ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Brachyodont
The molars or molar teeth are large, flat teeth at the back of the mouth. They are more developed in mammals. They are used primarily to grind food during chewing. The name ''molar'' derives from Latin, ''molaris dens'', meaning "millstone tooth", from ''mola'', millstone and ''dens'', tooth. Molars show a great deal of diversity in size and shape across mammal groups. The third molar of humans is sometimes vestigial. Human anatomy In humans, the molar teeth have either four or five cusps. Adult humans have 12 molars, in four groups of three at the back of the mouth. The third, rearmost molar in each group is called a wisdom tooth. It is the last tooth to appear, breaking through the front of the gum at about the age of 20, although this varies from individual to individual. Race can also affect the age at which this occurs, with statistical variations between groups. In some cases, it may not even erupt at all. The human mouth contains upper (maxillary) and lower (mandibul ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sympatry
In biology, two related species or populations are considered sympatric when they exist in the same geographic area and thus frequently encounter one another. An initially interbreeding population that splits into two or more distinct species sharing a common range exemplifies sympatric speciation. Such speciation may be a product of reproductive isolation – which prevents hybrid offspring from being viable or able to reproduce, thereby reducing gene flow – that results in genetic divergence. Sympatric speciation may, but need not, arise through secondary contact, which refers to speciation or divergence in allopatry followed by range expansions leading to an area of sympatry. Sympatric species or taxa in secondary contact may or may not interbreed. Types of populations Four main types of population pairs exist in nature. Sympatric populations (or species) contrast with parapatric populations, which contact one another in adjacent but not shared ranges and do not ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Crown (anatomy)
The crown is the top portion of the head behind the vertex. The anatomy of the crown varies between different organisms. The human crown is made of three layers of the scalp above the skull. The crown also covers a range of bone sutures, and contains blood vessels and branches of the trigeminal nerve. The structure of the human crown provides a protective cavity for the brain and optimizes the crown's ability to ensure the neocortex is safe. Different parts of the neocortex, such as the frontal lobe and the parietal lobe, are protected by the meninges and bone structures. Other organisms, such as whales, have their blowholes on their crown, causing a flattened head shape. Some bird species have a crest located on their crown, used for communication and courtship. Macroevolution of the human crown has led to different structures between modern and archaic human species, such as significant changes to the cranial vault. The human crown is prone to different injuries and disord ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sexually Dimorphic
Sexual dimorphism is the condition where the sexes of the same animal and/or plant species exhibit different morphological characteristics, particularly characteristics not directly involved in reproduction. The condition occurs in most animals and some plants. Differences may include secondary sex characteristics, size, weight, colour, markings, or behavioural or cognitive traits. These differences may be subtle or exaggerated and may be subjected to sexual selection and natural selection. The opposite of dimorphism is ''monomorphism'', which is when both biological sexes are phenotypically indistinguishable from each other. Overview Ornamentation and coloration Common and easily identified types of dimorphism consist of ornamentation and coloration, though not always apparent. A difference in coloration of sexes within a given species is called sexual dichromatism, which is commonly seen in many species of birds and reptiles. Sexual selection leads to the exaggerated d ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rowland Ward
James Rowland Ward (1848–1912) was a British taxidermist and founder of the firm Rowland Ward Limited of Piccadilly, London. The company specialised in and was renowned for its taxidermy work on birds and big-game trophies, but it did other types of work as well. In creating many practical items from antlers, feathers, feet, skins, and tusks, the Rowland Ward company made fashionable items (sometimes known as Wardian furniture) from animal parts, such as zebra-hoof inkwells, antler furniture, and elephant-feet umbrella stands. Rowland Ward was also a well-known publisher of natural history books and big-game hunting narratives. The most famous and enduring Rowland Ward Ltd. product is the Records of Big Game series of books, which started in 1892 and is now in its thirtieth edition (2020). These books contain measurements of game animals from all over the world and is the oldest such series of books in existence. History of Rowland Ward Limited Even before Rowland's time, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Type Specimen
In biology, a type is a particular wiktionary:en:specimen, 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 (mathematics), 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 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Somali Language
Somali (Latin script: ; Wadaad writing, Wadaad: ; Osmanya: 𐒖𐒍 𐒈𐒝𐒑𐒛𐒐𐒘 ) is an Afroasiatic languages, Afroasiatic language belonging to the Cushitic languages, Cushitic branch. It is spoken as a mother tongue by Somalis in Greater Somalia and the Somali diaspora. Somali is an official language in Somalia and Ethiopia, and a national language in Djibouti as well as in northeastern Kenya. The Somali language is written officially with the Somali Latin alphabet, Latin alphabet although the Arabic alphabet and several Somali scripts like Osmanya script, Osmanya, Kaddare script, Kaddare and the Gadabuursi Somali Script, Borama script are informally used.Lewis, I.M. (1958)The Gadabuursi Somali Script ''Bulletin of the School of Oriental and African Studies'', University of London, Vol. 21, pp. 134–156. Classification Somali is classified within the Cushitic branch of the Afroasiatic family, specifically, Lowland East Cushitic languages, Lowland East Cushitic in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Blackbuck
The blackbuck (''Antilope cervicapra''), also known as the Indian antelope, is an antelope native to India and Nepal. It inhabits grassy plains and lightly forested areas with perennial water sources. It stands up to high at the shoulder. Males weigh , with an average of . Females are lighter, weighing or on average. Males have long, ringed horns, though females may develop horns as well. The white fur on the chin and around the eyes is in sharp contrast with the black stripes on the face. The coats of males show a two-tone colouration; while the upper parts and outsides of the legs are dark brown to black, the underparts and the insides of the legs are white. Females and juveniles are yellowish fawn to tan. The blackbuck is the sole living member of the genus ''Antilope'' and was scientifically described by Carl Linnaeus in 1758. Two subspecies are recognized. The blackbuck is active mainly during the day. It forms three type of small groups, female, male, and bachelor h ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
.jpg "Click for more on -> Type Specimen")
