| 单词 | radiolarian |
| 例句 | The shells of dead radiolarians sink to the ocean floor, where they may accumulate in 100 meter-thick depths. Fundamentals of Biology 2015-01-01T00:00:00Z And Sirjana correctly spelled puerilely — childish — and radiolarian — a single-celled marine animal having a spherical body with threadlike projections. 3 Seattle-area teens advance to quarterfinals in the Scripps National Spelling Bee 2022-05-31T04:00:00Z The survey data also suggests ocean organisms that work together to thrive, such as colonial radiolarians living within giant algae, are more numerous than those that directly compete. Multitude of Microscopic Wonders Discovered in the World's Oceans [Slide Show] 2015-05-21T04:00:00Z Then they sequenced the DNA and compared the results to known foraminifera and radiolarian DNA sequences. Ancient DNA Found Hidden Below Sea Floor 2013-05-08T00:15:00Z The shells of deceased diatoms and some radiolarian skeletons are also made of silicon dioxide. What Lives at the Bottom of the Mariana Trench? More Than You Might Think 2013-04-15T00:15:05.547Z However, nature’s radiolarian examples are the most stunning instances of icosahedral symmetry and well worth a careful look. Mathematical Impressions: An Exploration of Symmetric Structures [Video] 2013-03-22T20:45:00.347Z The family got this name for the same reason the film Proteus — about the remarkable sea creatures called radiolarians which I reviewed this year — got its name: a stunning diversity of form. Proteas: The Most Beautiful and Abundant Flowers You've Probably Never Heard Of 2012-07-04T19:15:00.240Z Other instances of the coherence of the cells of unicellular organisms into indefinite and inconstant aggregations is presented by some radiolarians, individuals which cohere into what are called colonies. The Contemporary Review, Volume 36, October 1879 2012-04-18T02:00:17.060Z The researchers were after genetic material from two related groups of marine organisms, the foraminifera and the radiolarians. Ancient DNA Found Hidden Below Sea Floor 2013-05-08T00:15:00Z They’re ribbon chert, formed in a deep ocean environment from the silica skeletons of radiolarians. M lange et Trois: A Trip Across Subduction Zone Madness 2012-03-07T22:15:00.213Z Lebrun discovered during his research that Haeckel’s home in Jena, Germany — the aptly named Villa Medusa — was adorned with such features as chairs carved with radiolarians and a chandelier surrounded by a painted jellyfish mandala. Proteus: How Radiolarians Saved Ernst Haeckel 2012-01-31T21:45:07.440Z The Proterozoic fossils thus far discovered include not only microscopic radiolarians such as still form the red ooze of the deepest ocean floors, but the much more significant tubes of annelids or worms. Climatic Changes Their Nature and Causes 2011-10-28T02:00:24.840Z The simplest form of all exemplifies spherical symmetry, and is that which we have seen in the truffle, the radiolarian, the volvox, Myxastrum and Magosphæra. The Contemporary Review, Volume 36, October 1879 2012-04-18T02:00:17.060Z Some cherts contain tests of radiolaria, and correspond fairly closely to the siliceous radiolarian oozes which are gathering at the present day at the bottom of some of the deepest parts of the oceans. Encyclopaedia Britannica, 11th Edition, Volume 10, Slice 5 "Fleury, Claude" to "Foraker" 2011-04-03T02:00:20.883Z In the Kapoewas district radiolarian cherts supposed to be of Jurassic age are met with. Encyclopaedia Britannica, 11th Edition, Volume 4, Slice 3 "Borgia, Lucrezia" to "Bradford, John" What was it he saw in the radiolarians that drew Haeckel back to science? Proteus: How Radiolarians Saved Ernst Haeckel 2012-01-31T21:45:07.440Z Lower Cretaceous limestones and schists, with radiolarian cherts, arc extensively developed; and in many parts of the island Upper Cretaceous limestones with Rudistes and Eocene beds with nummulites have been found. Encyclopaedia Britannica, 11th Edition, Volume 7, Slice 6 "Coucy-le-Château" to "Crocodile" "That mud," he said, "was dredged up from the bottom of the ocean, and every particle of it is the shell of a radiolarian." A History of Science, Volume 5(of 5) Aspects Of Recent Science The silicious particles which constitute this mud, are derived, in part, from the diatomaceous plants and radiolarian animals which throng the surface, and, in part, from the spicula of sponges which live at the bottom. Discourses Biological and Geological Essays Considering that Haeckel drew thousands of radiolarians, there was no need to repeat. Proteus: How Radiolarians Saved Ernst Haeckel 2012-01-31T21:45:07.440Z Then he traveled to Messina, Sicily, where ocean currents and the geometry of the harbor captured tiny ocean protists called radiolarians in abundance. Proteus: How Radiolarians Saved Ernst Haeckel 2012-01-31T21:45:07.440Z To him a radiolarian, or any other creature, is of interest, not so much on its own account as for its associations. A History of Science, Volume 5(of 5) Aspects Of Recent Science The description of these one hundred and fifty new radiolarians constituted Haeckel's first great contribution to zoology, and won him his place as teacher at Jena in 1861. A History of Science, Volume 5(of 5) Aspects Of Recent Science Thus the radiolarians, insignificant creatures though they seem, have really taken an extraordinary share in building up the crust of the earth. A History of Science, Volume 5(of 5) Aspects Of Recent Science The ooze at the bottom of the sea, which finally becomes metamorphosed into chalk or stone, is but the aggregation of the shells of dead radiolarians. A History of Science, Volume 5(of 5) Aspects Of Recent Science |
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