| 单词 | ascidian |
| 例句 | They found that the ancestors of one group of palaemonid shrimp had all once lived inside ascidians, a group of tubular filter-feeding organisms that includes tunicates and sea squirts. These symbiotic shrimp ‘speed date’ to find new hosts 2022-05-25T04:00:00Z There are several advantages to studying embryonic development in sea squirts — which are also known as ascidians. A deep dive into the development of sea squirts 2019-07-09T04:00:00Z In the sea and along its shores swarm organisms of the other living world — marine diatoms, crustaceans, ascidians, sea hares, priapulids, coral, loriciferans and on through the still mostly unfilled encyclopedia of life. Opinion | The 8 Million Species We Don’t Know 2018-03-03T05:00:00Z An egg does not come from a stone, and the ascidian did not come from a lifeless rock. The Eliminator; or, Skeleton Keys to Sacerdotal Secrets 2012-03-27T02:00:23.077Z My ancestor, the ascidian, in fact, inherited the business when it consisted of little more than a single spindle; since his day my nearer ancestors have added loom after loom.” Telepathy and the Subliminal Self 2011-08-26T02:00:28.567Z Some of their descendants have retained their ascidian associations. These symbiotic shrimp ‘speed date’ to find new hosts 2022-05-25T04:00:00Z The finding of a prototype of the vertebrate telencephalon in the ascidian larva raises the question of how the complicated structure of the vertebrate brain evolved. A deep dive into the development of sea squirts 2019-07-09T04:00:00Z The eye of the ascidian tadpole agrees fundamentally with the type of eye peculiar to the vertebrates in that the retina is derived from the wall of the brain. Degeneracy Its Causes, Signs and Results 2011-05-02T02:00:17.657Z Further, he includes in it his own Enterognathus comatulae, not from an ascidian, but from the intestine of the beautiful starfish Antedon rosaceus. Encyclopaedia Britannica, 11th Edition, Volume 9, Slice 6 "English Language" to "Epsom Salts" 2011-02-19T03:00:59.807Z They pass through peculiar phases of development, the young ascidian appearing like a tadpole-body. The New Gresham Encyclopedia. Vol. 1 Part 2 Amiel to Atrauli A few of the descendants of those shrimp later returned to living inside ascidians. These symbiotic shrimp ‘speed date’ to find new hosts 2022-05-25T04:00:00Z Marine forms are usually attached to various sea-weeds, and many are found in the stomachs of molluscs, holothurians, ascidians and other denizens of the ocean. Encyclopaedia Britannica, 11th Edition, Volume 8, Slice 4 "Diameter" to "Dinarchus" In this, as in the case of the eye, the lancelet is lower than the ascidians, the insects, crustaceans, and many molluscs. Degeneracy Its Causes, Signs and Results 2011-05-02T02:00:17.657Z So that the famous ascidian mollusc, with a semi-vertebral larval stage, which nourished in the writings of Darwin and others, is no longer needful. 1931: A Glance at the Twentieth Century In social ascidians the peduncles of a number of individuals are united into a common tubular stem, with a partial common circulation of blood. The New Gresham Encyclopedia. Vol. 1 Part 2 Amiel to Atrauli The researchers think these seemingly radical alterations in lifestyle were made possible by similar structures in ascidians and bivalve mollusks, they report this month in Contributions to Zoology. These symbiotic shrimp ‘speed date’ to find new hosts 2022-05-25T04:00:00Z Among the cœlomati of the present day, the ascidians are the nearest relatives of this exceedingly remarkable worm, which connect the widely differing classes of invertebrate and vertebrate animals. Was Man Created? There are some little beasts in the sea called ascidians, and they begin life as cheerful little tadpole things, with waggling tails and big expressive eyes. Select Conversations with an Uncle (Now Extinct) And Two Other Reminiscences In the transition that once took place from one species of ascidian larva to a form similar to the lancelet fish, he sees the new branch diverging in the series of vertebrates. The Theories of Darwin and Their Relation to Philosophy, Religion, and Morality Urochorda = the ascidians, or sea-squirts, certain forms of life only recently recognised as relatives of the vertebrata. Text Book of Biology, Part 1: Vertebrata There indeed it might well be supposed to end, but, marvellous as it seems, it reappears in very lowly creatures; namely, in certain of the ascidians, sometimes called tunicaries or sea-squirts. On the Genesis of Species Amphioxus therefore might well be considered an extremely simplified and degenerate Cyclostome, and the ascidian larva the last term of this degeneration-series. Form and Function A Contribution to the History of Animal Morphology Big-mouthed fish, worms, spiders, anemones, sea-cucumbers, polyzoa, prawns, little fish like sardines, one spiky fish like nothing on earth, starfish and octopus, limpets with jointed shells, sponges, ascidians; isopods, and all kinds of sea lice. South with Scott Nay—thunders Science—put away such childish superstition, smite such traditionary idols; man was first made after the similitude of a marine ascidian, and once swam as a tadpole in primeval seas. Infelice "The beginning of man an ascidian—his ultimate development as an angel, a pear-shaped, transparent bag." Lippincott's Magazine of Popular Literature and Science Volume 17, No. 097, January, 1876 Constantly he comes to ask if I would like to see some new form and I am taken to see some protozoa or ascidian isolated on the slide plate of his microscope. Scott's Last Expedition Volume I He pointed out also that the "notochord" was confined to the tail of the ascidian larva. Form and Function A Contribution to the History of Animal Morphology Such stolons are often present in Anthozoa, Hydroidea, Bryozoa, and social ascidians. The Gutenberg Webster's Unabridged Dictionary Section S If I only had an ascidian of my own! Scientific American Supplement, No. 363, December 16, 1882 Included in the catch were a large number of monstrous gelatinous ascidians or "sea-squirts." The Home of the Blizzard Being the Story of the Australasian Antarctic Expedition, 1911-1914 Thus he would not object to relationship with a tailless catarrhine anthropoid ape, descended from a monad or a primal ascidian. The Kasidah of Haji Abdu El-Yezdi Such is, in my opinion, the nature of the homology existing between the tail of the ascidian tadpole and that of Amphioxus or of young amphibians. Form and Function A Contribution to the History of Animal Morphology At first they walked on all fours, then they would begin to develop an isolated human feature, one finger, one toe, one eye, like the ascidian, our first parent in the view of modern science. Myth, Ritual and Religion — Volume 1 We were just in ecstasies over differentiations, and molecules, and the professor, and protoplasms, and ascidians. Scientific American Supplement, No. 363, December 16, 1882 Goodsir, Prof., on the affinity of the lancelet to the ascidians. The Descent of Man |
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