Search over 40,000 articles from the original, classic Encyclopedia Britannica, 11th Edition.
|
See also:MAMMOTH (0. Russ. mammot, mod. mamant; the Tatar word mama, See also:earth, from which it is supposed to be derived, is not known to exist) , a name given to an See also:extinct See also:elephant, Elephas primigenius of See also:Blumenbach . Probably no extinct See also:animal has See also:left such abundant See also:evidence of its former existence; immense See also:numbers of bones, See also:teeth, and more or less entire See also:car-cases, or " mummies," as they may be called, having been discovered, with the flesh, skin and See also:hair in situ, in the frozen See also:soil of the See also:tundra of See also:northern See also:Siberia . The See also:general characteristics of the See also:order PROnoscIDEA, to which the See also:mammoth belongs, are given under that heading . The mammoth pertains to the most highly specialized See also:section of the See also:group of elephants, which also contains the See also:modern See also:Asiatic See also:species . Of the whole group it is in many respects, as in the See also:size and See also:form of the tusks and the characters of the molar teeth, the farthest removed from the See also:mastodon type, while its nearest surviving relative, the Asiatic elephant (E. See also:maximus), has retained the slightly more generalized characters of the mammoth's contemporaries of more See also:southern climes, E. columbi of See also:America and E. armeniacus of the Old See also:World . The tusks, or upper incisor teeth, which were probably smaller in the See also:female, in the adult See also:males attained the length of from 9 to Io ft. measured along the See also:outer See also:curve . Upon leaving the See also:head they:were directed at first downwards, and outwards, then upwards and finally inwards at the tips, and generally with a tendency to a See also:spiral form not seen in other elephants . It is chiefly by the characters of the molar teeth that the various extinct modifications of the elephant type are distinguished . Those of the mammoth (fig . 2) differ from the corresponding See also:organs of allied species in See also:great breadth of the See also:crown as compared with the length, the narrowness and crowding or See also:close approximation of the ridges, the thinness of the See also:enamel, and its straightness, See also:parallelism and See also:absence of " crimping," as seen on the worn See also:surface or in a See also:horizontal section of the tooth . The molars, as in other elephants, are six in number on each See also:side above and below, succeeding each other from before backwards . Of these Dr See also:Falconer gave the prevailing " See also:ridge-See also:formula "(or number of See also:complete ridges in each tooth) as 4, 8, 12, 12, 16, 24, as in E. maximus .
Dr See also:Leith-See also: There is evidence to show that it existed in See also:Britain before, during and after the glacial See also:period . It is in northern Siberia that its remains have been found in the greatest abundance and in exceptional preservation . For a long period there has been from that region an export of mammoth-See also:ivory, See also:fit for commercial purposes, to See also:China and to Europe . In the See also:middle of the loth See also:century See also:trade was carried on at See also:Khiva in fossil ivory . Middendorff estimated the number of tusks which have yearly come into the See also:market during the last two centuries at at least a See also:hundred pairs, but Nordenskidld considers this estimate too See also:low . Tusks are found along the whole See also:shore-See also:line between the mouth of the Obi and See also:Bering Strait, and the farther north the more numerous they become, the islands of New Siberia being one of the favourite See also:collecting localities . The remains are found not only See also:round the mouths of the great See also:rivers, but embedded in the frozen soil in such circumstances as to indicate that the animals lived not far from the localities in which they are found; and they are exposed either by the melting of the See also:ice in warm summers or the washing away of the sea-cliffs or See also:river-See also:banks . In this way the bodies of more or less nearly perfect animals, often See also:standing in the 531 erect position, with the soft parts and hairy covering entire, have been brought to See also:light . (From See also:Owen.) (Elephas primigenius). c, See also:cement; d, dentine; e, enamel . For geographical See also:distribution and anatomical characters see Falconer's Palaeontological See also:Memoirs, vol. ii . (1868); B . See also:Dawkins, " Elephas Primigenius, its Range in Space and See also:Time," Quart . Journ; Geol . See also:Soc., xx?ty . 138 (1879); and A . Leith Adams, Monograph of See also:British Fossil Elephants," part ii., Palaeontographical Society (1879) . (W . H . F.; R . |
|
|
[back] MAMMOTH |
[next] MAMMOTH CAVE |
There are no comments yet for this article.
Do not copy, download, transfer, or otherwise replicate the site content in whole or in part.
Links to articles and home page are encouraged.