| 单词 | Foraminifera |
| 例句 | Foraminifera are tiny, single-celled organisms that live in the oceans. Researchers discover a new species of larger benthic foraminifer from the Ryukyu Islands 2023-09-19T04:00:00Z "The deep ocean sediments are packed full of these microscopic marine organisms called Foraminifera," Prof Wilson explained. Dinosaur extinction: 'Asteroid strike was culprit' 2020-01-17T05:00:00Z Foraminifera, or “forams” for short, are single-celled plankton that live in the ocean. Ancient plankton have climate data hidden in their shells 2019-01-31T05:00:00Z Familiar examples of these “unicellular” forms are Bacteria and Diatoms among the plants, and Foraminifera and Infusoria among the animals. Encyclopaedia Britannica, 11th Edition, Volume 7, Slice 8 "Cube" to "Daguerre, Louis" 2012-01-31T03:00:17.257Z In many cases it is certain that these are casts, which fill up the interior of empty shells of Foraminifera. Encyclopaedia Britannica, 11th Edition, Volume 12, Slice 1 "Gichtel, Johann" to "Glory" 2012-01-11T03:00:20.463Z The city of Richmond, Virginia, is built over rocks, composed largely of the minute fossils of Diatomace� intermingled with the Foraminifera and others. Through a Microscope Something of the Science Together with many Curious Observations Indoor and Out and Directions for a Home-made Microscope. 2011-12-29T03:00:20.733Z Foraminifera, a group of protozoa provided with shells, 44. The Biological Problem of To-day Preformation Or Epigenesis? The Basis of a Theory of Organic Development 2011-08-29T02:01:04.170Z In any case it is probable that the Foraminifera have experienced alternations of expansion and shrinkage,42 of elevation and decadence, in the lapse of geological time. The Chain of Life in Geological Time A Sketch of the Origin and Succession of Animals and Plants 2011-06-01T02:00:24.880Z Brady, separately, and in collaboration, described an enormous number of forms in a series of papers, as well as in the monograph by the latter of the Foraminifera of the “Challenger” expedition. Encyclopaedia Britannica, 11th Edition, Volume 10, Slice 6 "Foraminifera" to "Fox, Edward" 2011-04-22T02:00:08.637Z It is found that this great mass of chalk is made up principally of tiny microscopic shells called Foraminifera, whole and in crushed fragments. The Geological Story of the Isle of Wight With a lens we find the minute specks are spiral shells of many species belonging to the class Foraminifera, and very closely allied to the amœba. Through a Microscope Something of the Science Together with many Curious Observations Indoor and Out and Directions for a Home-made Microscope. 2011-12-29T03:00:20.733Z Those minute, simply organized, and very variable creatures, the Foraminifera, exemplify the first of these apparent causes; the crafty wolves furnish examples of the second. The Origin of the World According to Revelation and Science In the Cretaceous and early Tertiary periods, the Foraminifera of different types have been nearly as great rock-builders as they were in the Laurentian. The Chain of Life in Geological Time A Sketch of the Origin and Succession of Animals and Plants 2011-06-01T02:00:24.880Z Foraminifera abound in the shore sands and the crevices of coral reefs. Encyclopaedia Britannica, 11th Edition, Volume 10, Slice 6 "Foraminifera" to "Fox, Edward" 2011-04-22T02:00:08.637Z From these salts is derived the calcium deposited as calcium carbonate to form the shells of the Foraminifera and the larger shells in the Chalk. The Geological Story of the Isle of Wight Beds of this recent kind of limestone are found in England and in France, pure white, made of the skeletons of the smallest of lime-consuming creatures, Foraminifera. Earth and Sky Every Child Should Know Easy studies of the earth and the stars for any time and place Analysis of carefully selected shells of Foraminifera, Heteropods, and Pteropods, did not show the slightest trace of alumina, and none has as yet been discovered in coral skeletons. Island Life Or the Phenomena and Causes of Insular Faunas and Floras The only more modern things which at all resemble it are the Foraminifera called Dactylopora, which belong to the Tertiary period. The Chain of Life in Geological Time A Sketch of the Origin and Succession of Animals and Plants 2011-06-01T02:00:24.880Z Above this horizon Foraminifera are more abundant as constituents, partial or principal of calcareous rocks, the genus Endothyra being indeed almost confined to Carboniferous beds. Encyclopaedia Britannica, 11th Edition, Volume 10, Slice 6 "Foraminifera" to "Fox, Edward" 2011-04-22T02:00:08.637Z All Foraminifera, however, are not provided with shells. The Contemporary Review, Volume 36, September 1879 In such types as the Foraminifera, which, almost structureless internally though they are, secrete calcareous shells, it is clear that the nature of this outer layer is determined by inherited constitution. Essays: Scientific, Political, & Speculative, Vol. I Chalk consists mainly of Foraminifera and fragments of shells deposited in a deep sea. The Beauties of Nature and the Wonders of the World We Live In The limestones contain Globigerina and other Foraminifera, the siliceous beds are made of Radiolaria, sponge spicules and diatoms, while the red clay closely resembles the red clay of the deepest parts of the oceans. Encyclopaedia Britannica, 11th Edition, Volume 3, Part 1, Slice 3 "Banks" to "Bassoon" Xenophyophoridae are a small group of bottom-dwelling Sarcodina which show a certain resemblance to arenaceous Foraminifera, though observations in the living state show that the character of the pseudopodia is lacking. Encyclopaedia Britannica, 11th Edition, Volume 10, Slice 6 "Foraminifera" to "Fox, Edward" 2011-04-22T02:00:08.637Z Certain Foraminifera have not varied since the Silurian epoch. Creative Evolution In the Foraminifera we see smaller groups of such creatures arranged into more definite shapes. Essays: Scientific, Political, & Speculative, Vol. I My "name" is Foraminifera 9-Hart Bailey's Beam, and I am of adequate age and size. The Day of the Boomer Dukes The Sarcodina, including the Foraminifera and the Radiolaria, are typically deep-sea forms and would not be represented by many types in the restricted locality examined at Woods Hole. Marine Protozoa from Woods Hole Bulletin of the United States Fish Commission 21:415-468, 1901 The little shells of Foraminifera are extremely abundant in some beds, the genera being in many cases such as now flourish abundantly in our seas. The Ancient Life History of the Earth A Comprehensive Outline of the Principles and Leading Facts of Palæontological Science Foraminifera: their classification and economic use; with an illustrated key to the genera. U.S. Copyright Renewals, 1975 July - December This chalk consists of the minute shells of Foraminifera, sprinkled with remains of small Entomostraca, and probably a few Pteropod-shells; though the sounding lines have not yet brought up any of these last. Essays: Scientific, Political, & Speculative, Vol. I "Yes, weapons," he stated, "for Foraminifera 9-Hart brought with him more than forty-three kilograms of weapons, ranging up to and including electronic." The Day of the Boomer Dukes During the last few years of his life he devoted considerable attention to the study of the Foraminifera in chalk, respecting which he made several interesting discoveries. Self help; with illustrations of conduct and perseverance The fossils of the undoubted Glacial deposits are principally shells, which are found in great numbers in certain localities, sometimes with Foraminifera, the bivalved cases of Ostracode Crustaceans, &c. The Ancient Life History of the Earth A Comprehensive Outline of the Principles and Leading Facts of Palæontological Science Chalk is mostly made from the shells of Foraminifera. The Gutenberg Webster's Unabridged Dictionary Section R The Globigerina of the present day, for example, is not different specifically from that of the chalk; and the same maybe said of many other Foraminifera. Discourses Biological and Geological Essays "You may call me Foraminifera 9," I directed, since I wished to be incognito, as you put it, and we proceeded along the "street." The Day of the Boomer Dukes At intermediate depths they mantle the ocean floor with a white, soft lime deposit known as Globigerina ooze, from a genus of the Foraminifera which contributes largely to its formation. The Elements of Geology When applied to the spiral shells of the Foraminifera, it means that all the convolutions of the shell lie in the same plane. The Ancient Life History of the Earth A Comprehensive Outline of the Principles and Leading Facts of Palæontological Science Foraminifera, Eocene. — of Mountain Limestone. — of the Chalk. The Student's Elements of Geology Thus besides Globigerina, there are eighteen species of deep-sea Foraminifera identical with species found in the chalk. Discourses Biological and Geological Essays My doubts, I remember, related to the rate of change of the Radiata in the Secondary formation, and of the Foraminifera in the oldest Tertiary beds… Good night, C. DARWIN. Life and Letters of Charles Darwin — Volume 2 The surface waters of the warm seas swarm with minute and lowly animals belonging to the order of the Foraminifera, which secrete shells of carbonate of lime. The Elements of Geology When applied to the shells of the Foraminifera, it implies that the convolutions of the shell do not lie in the same plane, but are obliquely wound round an axis. The Ancient Life History of the Earth A Comprehensive Outline of the Principles and Leading Facts of Palæontological Science It is almost entirely made up of millions of microscopic shells, of the size of minute grains of sand, which all belong to the class Foraminifera. The Student's Elements of Geology Professor Bailey, examining these grains microscopically, found that they were casts of the interior cavities of Foraminifera, consisting of a mineral known as Glauconite, which is a silicate of iron and alumina. Discourses Biological and Geological Essays The Infusoria, Foraminifera, and sponges, with some other forms, belong to this division. The Origin of Species by means of Natural Selection, 6th Edition They are the shells of animals called Foraminifera, because the shells of some of them are full of holes, through which they put out tiny arms. Madam How and Lady Why There are, however, as we shall see, many other limestones, which are likewise largely made up of Foraminifera, but in Fig. The Ancient Life History of the Earth A Comprehensive Outline of the Principles and Leading Facts of Palæontological Science For example, there are no sea-urchins, no corals, no chambered shells, such as the nautilus, nor microscopic Foraminifera in lacustrine or fluviatile deposits. The Student's Elements of Geology The only animals at the present day which possess a continuous calcareous skeleton, perforated by pores and penetrated by canals, are certain organisms belonging to the group of the Foraminifera. The Ancient Life History of the Earth A Comprehensive Outline of the Principles and Leading Facts of Palæontological Science The most important order is that of the Foraminifera. The Origin of Species by means of Natural Selection, 6th Edition The Foraminifera are all inhabitants of the sea, and are mostly of small or even microscopic dimensions. The Ancient Life History of the Earth A Comprehensive Outline of the Principles and Leading Facts of Palæontological Science We may, in fact, consider that the great agents in the production of limestones in past ages have been animals belonging to the Crinoids, the Corals, and the Foraminifera. The Ancient Life History of the Earth A Comprehensive Outline of the Principles and Leading Facts of Palæontological Science Lastly, in the fossils known as Receptaculites and Ischadites we are also presented with certain singular Lower Silurian Protozoans, which may with great probability be regarded as gigantic Foraminifera. The Ancient Life History of the Earth A Comprehensive Outline of the Principles and Leading Facts of Palæontological Science Thin slices of the limestones of the period, when examined by the microscope, very commonly exhibit the shells of Foraminifera in greater or less plenty. The Ancient Life History of the Earth A Comprehensive Outline of the Principles and Leading Facts of Palæontological Science As regards the animals of the Eocene period, the Protozoans are represented by numerous Foraminifera, which reach here their maximum of development, both as regards the size of individuals and the number of generic types. The Ancient Life History of the Earth A Comprehensive Outline of the Principles and Leading Facts of Palæontological Science Having many chambers; applied to the shells of Foraminifera and Cephalopoda. The Ancient Life History of the Earth A Comprehensive Outline of the Principles and Leading Facts of Palæontological Science When the matrix is granular, the rock is precisely similar to chalk, except that it is harder and less earthy in texture, whilst the fossils are only occasionally referable to the Foraminifera. The Ancient Life History of the Earth A Comprehensive Outline of the Principles and Leading Facts of Palæontological Science Sometimes used to designate the Foraminifera, or the Sponges. The Ancient Life History of the Earth A Comprehensive Outline of the Principles and Leading Facts of Palæontological Science Applied to the shells of Foraminifera and Mollusca. The Ancient Life History of the Earth A Comprehensive Outline of the Principles and Leading Facts of Palæontological Science Silicates, infiltration of the shells of Foraminifera by, 34, 74. The Ancient Life History of the Earth A Comprehensive Outline of the Principles and Leading Facts of Palæontological Science A few Foraminifera have been obtained from the Magnesian Limestone of England, and the same formation has yielded some ill-understood Sponges. The Ancient Life History of the Earth A Comprehensive Outline of the Principles and Leading Facts of Palæontological Science The section also exhibit Foraminifera and other minute fossils. The Ancient Life History of the Earth A Comprehensive Outline of the Principles and Leading Facts of Palæontological Science The Protozoans are represented by Foraminifera and Sponges, and the Cœlenterates by a small number of Corals; but these require no special notice. The Ancient Life History of the Earth A Comprehensive Outline of the Principles and Leading Facts of Palæontological Science As regards animal life, the Protozoans of the Cretaceous period are exceedingly numerous, and are represented by Foraminifera and Sponges. The Ancient Life History of the Earth A Comprehensive Outline of the Principles and Leading Facts of Palæontological Science The flints of the Chalk also commonly contain the shells of Foraminifera. The Ancient Life History of the Earth A Comprehensive Outline of the Principles and Leading Facts of Palæontological Science |
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