| 单词 | Carboniferous period |
| 例句 | Calder estimates that the fossil is from the end of the Carboniferous period and into the Permian period. Woman on beach finds fossil from unknown animal likely older than dinosaurs 2022-09-02T04:00:00Z The tall club mosses, horsetails, and tree-like ferns that flourished in the swampy forests of the Carboniferous period gave rise to large deposits of coal throughout the world. Fundamentals of Biology 2015-01-01T00:00:00Z Three hundred million years ago, seedless plants dominated the landscape and grew in the enormous swampy forests of the Carboniferous period. Concepts of Biology 2013-04-25T00:00:00Z There the ancient inhabitants of a balmy estuary that covered the area more than 300 million years ago, during the Carboniferous period, are entombed in ironstone nodules. Was the Tully Monster a Fish, a Worm, a Giant Slug with Fangs? 2023-04-19T04:00:00Z Later we ascend from the forests of the Carboniferous period to the wastelands of the Anthropocene. Underland by Robert Macfarlane review – a dazzling journey into deep time 2019-05-08T04:00:00Z The Permian was the end of the Carboniferous period, which means “coal-bearing.” Burning coal may have caused Earth’s worst mass extinction | Dana Nuccitelli 2018-03-12T04:00:00Z This led to the widespread distribution of tetrapods during the early Carboniferous period. Fundamentals of Biology 2015-01-01T00:00:00Z They dominated the landscape of the Carboniferous period, growing into tall trees and forming large swamp forests. Concepts of Biology 2013-04-25T00:00:00Z When they re-emerge, in what is called the Lower Carboniferous period, they do, indeed, live up to their potential. New fossils illuminate the route that led ultimately to human beings 2016-12-08T05:00:00Z However, some 300 million years ago, during earth’s Carboniferous period, researchers know that earth’s oxygen levels peaked at some 31 percent. Oxygen's Ancient Rise Still One Of Earth's Biggest Mysteries 2013-09-01T00:50:00Z Fossil fuel burning puts back into the atmosphere the carbon dioxide – and the warmth – locked away in the Carboniferous period and buried for 300 million years. Soils Cannot Lock Away Black Carbon 2013-04-26T17:15:14.607Z Seed plants resembling modern tree ferns became more numerous and diverse in the coal swamps of the Carboniferous period. Fundamentals of Biology 2015-01-01T00:00:00Z Giant dragonflies roamed the Carboniferous period, around 300 million years ago. Dragonflies keeping their eyes on the prize 2013-01-21T14:45:05.930Z The 60-million-year-long Carboniferous period—when the bulk of the world's coal deposits were laid down and atmospheric CO2 levels declined—ended roughly 300 million years ago. White Rot Fungi Slowed Coal Formation 2012-06-28T18:45:00.200Z We have undoubted fossil evidence that winged insects lived in the Devonian and became numerous in the Carboniferous period. Encyclopaedia Britannica, 11th Edition, Volume 13, Slice 4 "Hero" to "Hindu Chronology" 2012-04-04T02:00:56.447Z There are at least traces of land and shore-lines in the Carboniferous period. Encyclopaedia Britannica, 11th Edition, Volume 11, Slice 6 "Geodesy" to "Geometry" 2011-09-19T02:00:10.473Z And they found that channel formations in the rock—a signature of modern rivers—didn’t appear until the Carboniferous period, when tree-like plants evolved. Modern Rivers Shaped By Trees 2011-08-24T21:15:00.450Z Now, during the Carboniferous period, it cannot be denied that we have every requisite for supporting vegetable life, and the most undeniable evidence of its existence by the fossiliferous preservation of near 500 species. The Bible: what it is 2011-05-31T02:00:29.687Z The earliest date at which land plants seem to have been sufficiently abundant to furnish material for coal-beds was the Carboniferous period. North America 2011-05-05T02:00:20.027Z Towards the close of the Carboniferous period the third great mountain chain was formed. Encyclopaedia Britannica, 11th Edition, Volume 9, Slice 8 "Ethiopia" to "Evangelical Association" 2011-03-05T03:00:24.537Z THE abundant life of the Carboniferous period was succeeded by a vast cycle of dry and bitter ages. A Short History of the World 2011-03-04T03:01:03.147Z In the marshes in which forests grew and died during the Carboniferous period, there were piled, one upon another, layers of vegetation that hardened into coal; this coal sank slowly beneath a deepening sea. Twentieth Century Socialism What It Is Not; What It Is: How It May Come 2011-01-17T03:00:51.213Z Along this line these Upper Red sandstones and shales are overlaid by a thin zone of volcanic rocks which point to contemporaneous volcanic action in this region at the beginning of the Carboniferous period. Encyclopaedia Britannica, 11th Edition, Volume 8, Slice 8 "Dubner" to "Dyeing" 2010-12-26T03:00:17.840Z Since the Carboniferous period coal has been found at many horizons in the sedimentary rocks, and peat is being accumulated at the present day. North America 2011-05-05T02:00:20.027Z There is again a floor of folded Archean rocks overlaid by nearly horizontal strata of Lower Palaeozoic age, but these are followed by marine beds belonging to the Carboniferous period. Encyclopaedia Britannica, 11th Edition, Volume 2, Slice 7 "Arundel, Thomas" to "Athens" They are more various, it is true, than are the few surviving members of the order of the amphibia which once in the Carboniferous period ruled the world. A Short History of the World 2011-03-04T03:01:03.147Z Apparently related to the Opiliones are two extinct groups, the Anthracomarti and Phalangiotarbi, which are not known to have survived the Carboniferous period. Encyclopaedia Britannica, 11th Edition, Volume 2, Slice 3 "Apollodorus" to "Aral" After the long Carboniferous period came to an end followed periods in which great formations of red sandstone were made,—the Permian, and the New Red Sandstone or Trias. The Geological Story of the Isle of Wight The principal folding took place at the close of the Carboniferous period, and was contemporaneous with that of the old Hercynian chain of Belgium, &c. Encyclopaedia Britannica, 11th Edition, Volume 5, Slice 7 "Cerargyrite" to "Charing Cross" Woody fibre contains a large quantity of this element, and the carbon of coal is thus accounted for; it was accumulated during the growth of the plants of the Carboniferous period. Coal and What We Get from It Our modern diminutive “horse-tails” with scaly leaves were represented in the Carboniferous period by gigantic calamites, often with a diameter of 1 to 2 ft. and a height of 50 to 90 ft. Encyclopaedia Britannica, 11th Edition, Volume 5, Slice 3 "Capefigue" to "Carneades" Farther, we find that even in the Carboniferous period scarcely any plants of the higher orders flourished, and there was a preponderance of the lower forms of the vegetable kingdom. The Origin of the World According to Revelation and Science The volcanic outbursts which followed became feebler in the Devonian and Carboniferous periods and ceased with the Permian. Encyclopaedia Britannica, 11th Edition, Volume 9, Slice 4 "England" to "English Finance" Many of the clays which pass under this designation belong to the Carboniferous period, and are found underlying seams of coal. Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 4 "Cincinnatus" to "Cleruchy" Small as is the legacy of nitrogen bequeathed to us from the Carboniferous period, we see that it sums up to a considerable annual addition to our industrial resources. Coal and What We Get from It The close of the early Carboniferous period was marked by an augmentation of the orogenic movements. Encyclopaedia Britannica, 11th Edition, Volume 5, Slice 3 "Capefigue" to "Carneades" Suffice it to say that the scientist now believes that out of the lungfish of the Devonian came the amphibians of the Carboniferous period. The Meaning of Evolution They are very ancient—more ancient than the Carboniferous period, for instance, for no trees could stand the furious storms that must have been prevalent at this time. Pioneers of Science The strata which in the south overlie the yellow bed of the Holoptychius represent the Carboniferous period, the overlying strata in the north represent the Oölitic one. The Cruise of the Betsey or, A Summer Ramble Among the Fossiliferous Deposits of the Hebrides. With Rambles of a Geologist or, Ten Thousand Miles Over the Fossiliferous Deposits of Scotland The ancient fishes seem to have received their fullest development during the Carboniferous period. The Testimony of the Rocks or, Geology in Its Bearings on the Two Theologies, Natural and Revealed This movement commenced in the central and western part of the continent and continued throughout the whole Carboniferous period. Encyclopaedia Britannica, 11th Edition, Volume 5, Slice 3 "Capefigue" to "Carneades" Just as this coastal region to-day is covered with salt marshes, so the whole internal sea of the Carboniferous period was converted into a great swamp. The Meaning of Evolution The second fragment of geological history preserved in the Salt Range is very much younger, beginning with rocks which were formed in the later part of the Carboniferous period. The Panjab, North-West Frontier Province, and Kashmir The Carboniferous period has been so named because at that time the climate and features of the earth in many places favored the growth of dense and heavy vegetation. The Western United States A Geographical Reader The Carboniferous period was marked by a mild moist climate and a luxuriant vegetation in the swampy low grounds. The Outline of Science, Vol. 1 (of 4) A Plain Story Simply Told They flourished in the Carboniferous period, when the enormous beds of coal were formed, a space of time that occupied many millions of years. Among the Mushrooms A Guide For Beginners The Carboniferous period—Relations of Carboniferous rocks to Devonian—The Carboniferous Limestone or Sub-Carboniferous series—The Millstone-grit and the Coal-measures—Life of the period—Structure and mode of formation of Coal—Plants of the Coal. The Ancient Life History of the Earth A Comprehensive Outline of the Principles and Leading Facts of Palæontological Science We have, however, remains enough to establish unquestionably the fact of their existence in the Carboniferous period, and to show us that the type of Articulates was already represented by all its classes. The Atlantic Monthly, Volume 11, No. 67, May, 1863 The larger part of the coal in the eastern United States was formed during the Carboniferous period. The Western United States A Geographical Reader In the Permian period the warm moist climate of most of the Carboniferous period was replaced by severe conditions, culminating in an Ice Age which spread from the Southern Hemisphere throughout the world. The Outline of Science, Vol. 1 (of 4) A Plain Story Simply Told It is, indeed, wonderful that the mode of growth of animals which died out in the Carboniferous period should be better known to us than that of many living types. The Atlantic Monthly, Volume 11, No. 66, April, 1863 As regards the life of the Carboniferous period, we naturally find, as has been previously noticed, great differences in different parts of the entire series, corresponding to the different mode of origin of the beds. The Ancient Life History of the Earth A Comprehensive Outline of the Principles and Leading Facts of Palæontological Science There were a great variety of the Selachians in the Carboniferous period. The Atlantic Monthly, Volume 11, No. 67, May, 1863 In the geological succession, these Ophiurans follow the Crinoids, being introduced at about the Carboniferous period, and perhaps earlier. The Atlantic Monthly, Volume 10, No. 57, July, 1862 As Amphibians had their Golden Age in the Carboniferous period we may fitly use this opportunity of indicating the advances in evolution which the emergence of Amphibians implied. The Outline of Science, Vol. 1 (of 4) A Plain Story Simply Told Even in the Carboniferous period but few are to be found: they had their day in the Silurian and Devonian ages. The Atlantic Monthly, Volume 11, No. 66, April, 1863 Hence we have already a very extensive acquaintance with the plants of the Carboniferous period; and our knowledge on this subject is Page 161 daily undergoing increase. The Ancient Life History of the Earth A Comprehensive Outline of the Principles and Leading Facts of Palæontological Science Before leaving the Carboniferous period, let us see what territory the United States has conquered from the Ocean during that time. The Atlantic Monthly, Volume 11, No. 67, May, 1863 We find in the Carboniferous period fossilised remains of five-toed amphibia, the oldest terrestrial, air-breathing vertebrates. The Evolution of Man — Volume 2 This area subsided during the Carboniferous period to a depth of nearly ten thousand feet. The Elements of Geology A large portion of the trees of the Carboniferous period belonged to this genus, of which as many as 28 species are enumerated as British. The Student's Elements of Geology A fossil Scorpion from the Coal-measures of Bohemia. in the Carboniferous period of Scorpions differing but very little from existing forms. The Ancient Life History of the Earth A Comprehensive Outline of the Principles and Leading Facts of Palæontological Science For instance, in the Carboniferous period we have only Cryptogams, Ferns, Lycopodiacae, and Equisetaceae. The Atlantic Monthly, Volume 11, No. 67, May, 1863 I refer only to one Glacial period as affecting the distribution of organic beings; I did not wish even to allude to the doubtful evidence of glacial action in the Permian and Carboniferous periods. More Letters of Charles Darwin — Volume 1 As the Carboniferous period drew toward its close the sea gradually withdrew from the eastern part of the continent. The Elements of Geology The first of these, having an E.N.E. direction, took place at the close of the Carboniferous period. The Student's Elements of Geology On the other hand, the Sigillariods of the Coal seem to have finally disappeared at the close of the Carboniferous period. The Ancient Life History of the Earth A Comprehensive Outline of the Principles and Leading Facts of Palæontological Science In the Carboniferous period we begin to find perfectly preserved specimens of the Ganoids, and the adjoining wood-cut represents such a one. The Atlantic Monthly, Volume 11, No. 67, May, 1863 The two separate walls, one above the other, on the top of the Canyon, as seen in the arms of the amphitheatre at El Tovar, are the other two wide members of this Carboniferous period. The Grand Canyon of Arizona; how to see it In the Carboniferous period it was lowered beneath the sea and received a cover of limestone. The Elements of Geology The plants called Sigillaria and Stigmaria, so marked a feature in the Carboniferous period, are as yet wanting in the true Permian. The Student's Elements of Geology Late in the succeeding Carboniferous period appear shells with a truly ammonoid complexity of sutures, and in the Permian their number and variety cause them to form a striking element of the marine faunas. Darwin and Modern Science These were the inland seas of the Carboniferous period. The Atlantic Monthly, Volume 11, No. 67, May, 1863 We have first, therefore, to consider the evolution of the plant, and see how it increases in form and number until it covers the earth with the luxuriant forests of the Carboniferous period. The Story of Evolution The first, at the close of the Carboniferous period, is the subject of this chapter. The Story of Evolution Thus, for example, Mr. Hull has pointed out that three principal lines of disturbance, all later than the Carboniferous period, have affected the stratified rocks of Lancashire. The Student's Elements of Geology In other words, as far as the present study is concerned, we need only regard the climate of the Devonian and Carboniferous periods. The Story of Evolution These were the lords of the forests all over the world in the Carboniferous period. The Atlantic Monthly, Volume 11, No. 67, May, 1863 The Trilobite, once the master of the seas, slowly yields to the stronger competitors, and the latter part of the Carboniferous period sees the last genus of Trilobites finally extinguished. The Story of Evolution The mosses, the lowest group, are not preserved in the rocks; from the other three classes will come the great forests of the Carboniferous period. The Story of Evolution Apart from the appearance of the great fishes and Crustacea, the Carboniferous period was one of great stimulation to aquatic life. The Story of Evolution Such is the life of the Carboniferous period. The Story of Evolution The rocks and forests of the Carboniferous period are calculated to have absorbed two hundred times as much carbon as there is in the whole of our atmosphere to-day. The Story of Evolution |
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