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Mollusca   Listen
proper noun
Mollusca  n. pl.  (Zool.) One of the grand divisions of the animal kingdom, a phylum including the classes Cephalopoda, Gastropoda, Pteropoda, Scaphopoda, and Pelecyopoda (syn. Bivalvia, formerly called Lamellibranchiata, or Conchifera). These animals have an unsegmented bilateral body, with most of the organs and parts paired, but not repeated longitudinally. Most of them develop a mantle, which incloses either a branchial or a pulmonary cavity. They are generally more or less covered and protected by a calcareous shell, which may be univalve, bivalve, or multivalve. Note: Formerly the Brachiopoda, Bryzoa, and Tunicata were united with the Lamellibranchiata in an artificial group called Acephala, which was also included under Mollusca. See Molluscoidea.






Collaborative International Dictionary of English 0.48








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"Mollusca" Quotes from Famous Books



... in conducting a natural history survey of the State through the voluntary labour of its members. To Powell was assigned the department of conchology. This work he entered upon with his usual application and made the most complete collection of the mollusca of Illinois ever brought together by one man. Incidentally, botany, zoology, and mineralogy received attention, and in these lines he secured notable collections. With the broad mental grasp which was a pronounced trait, he perceived ...
— The Romance of the Colorado River • Frederick S. Dellenbaugh

... be more convenient for the observation of the Mollusca and Radiata than Cape Venus. At a few hundred paces from the shore is a coral reef, which at low water is completely dry. In the shoal water, between the reef and the shore, is found the greatest variety of the more brittle kinds of coral, and among their sometimes thick bushes, ...
— A New Voyage Round the World, in the years 1823, 24, 25, and 26, Vol. 2 • Otto von Kotzebue

... one of the 100,000 species of backboneless animals belonging to the zoological group known as the Mollusca. Mollusks include not only the familiar clams, scallops and snails, but also the squids, octopus and Chambered Nautilus. Other "shells" found in the ocean include those of crabs, lobsters, barnacles and ...
— Let's collect rocks & shells • Shell Oil Company

... is largely admitted that numerous tertiary species have continued down into the quaternary, and many of them to the present time. A goodly percentage of the earlier and nearly half of the later tertiary mollusca, according to Des Hayes, Lye!!, and, if we mistake not, Bronn, still live. This identification, however, is now questioned by a naturalist of the very highest authority. But, in its bearings on the new theory, the point here ...
— Evolution and Ethics and Other Essays • Thomas H. Huxley

... luminous flowers or roots, nor do I know of any authenticated instance of such, which may not be explained by the presence of mycelium or of animal life. In the animal kingdom, luminosity is confined, I believe, to the Invertebrata, and is especially common amongst the Radiata and Mollusca; it is also frequent in the Entromostracous Crustacea, and in various genera of most orders of insects. In all these, even in the Sertulariae, I have invariably observed the light to be increased by irritation, ...
— Himalayan Journals (Complete) • J. D. Hooker

... with the curator of the museum, Mr. Macgillivray, who afterwards published a large and excellent book on the birds of Scotland. I had much interesting natural-history talk with him, and he was very kind to me. He gave me some rare shells, for I at that time collected marine mollusca, but with no ...
— The Life and Letters of Charles Darwin, Volume I • Francis Darwin

... ten days to wait before we embarked. During this interval, we employed ourselves in preparing the plants we had collected in the beautiful valleys of Galicia, which no naturalist had yet visited: we examined the fuci and the mollusca which the north-west winds had cast with great profusion at the foot of the steep rock, on which the lighthouse of the Tower of Hercules is built. This edifice, called also the Iron Tower, was repaired in 1788. ...
— Equinoctial Regions of America • Alexander von Humboldt

... I have been trying to realize from memory the particular instincts of those antediluvian animals of the secondary period, which succeeding to the mollusca, to the crustacea, and to the fish, preceded the appearance of the race of mammifers. The generation of reptiles then reigned supreme upon the earth. These hideous monsters ruled everything in ...
— A Journey to the Centre of the Earth • Jules Verne

... that direction, named Chuantsa; on it we see a cake of salt and lime an inch and a half thick. All the others have an efflorescence of lime and one of the nitrates only, and some are covered thickly with shells. These shells are identical with those of the mollusca of Lake Ngami and the Zouga. There are three varieties, ...
— Missionary Travels and Researches in South Africa - Journeys and Researches in South Africa • David Livingstone

... "This mollusca is oblong, and of different sizes, from three to eighteen inches in length; and I have seen a few that were not less than two feet long. They were nearly round, a little flattish on one side, which lies next to the bottom of the sea; and they ...
— The Works of Edgar Allan Poe - Volume 3 (of 5) of the Raven Edition • Edgar Allan Poe

... classification of the greatest zoologist of modern times, is perhaps still more remarkable. Cuvier divides all animals into vertebrate and invertebrate; the invertebrates consisting, according to his arrangement, of three great divisions,—mollusca, articulata, and radiata; and the vertebrates, of four great classes,—the mammals, the birds, the reptiles, and the fishes. From the lowest zone at which organic remains occur, up till the higher beds of the Lower Silurian System, all the animal remains yet found ...
— The Testimony of the Rocks - or, Geology in Its Bearings on the Two Theologies, Natural and Revealed • Hugh Miller

... the dissipating club-houses. "Paid your money?" Sacrifice that rather than your soul. "Good fellows," are they? They cannot stay what they are under such influences. Mollusca live two hundred fathoms down in the Norwegian seas. The Siberian stag grows fat on the stunted growth of Altaian peaks. The Hedysarium thrives amid the desolation of Sahara. Tufts of osier and birch grow on the hot lips of volcanic Schneehalten. But good character and a useful life thrive ...
— The Abominations of Modern Society • Rev. T. De Witt Talmage

... the fall of an apple led Newton to discover a great law, etc.) "Geology," Mrs. Eddy says, "has never explained the earth's formations. It cannot explain them." "Natural Science is not really natural or scientific, because it is deduced from the evidences of the senses." "Vertebra, articulata, mollusca, and radiata are evolved by mortal and material thought." "Theorizing about man's development from mushrooms to monkeys, and from monkeys into men, amounts to nothing in the right direction, and very ...
— McClure's Magazine, Vol 31, No 2, June 1908 • Various



Words linked to "Mollusca" :   Lamellibranchia, class Bivalvia, Gasteropoda, class Polyplacophora, kingdom Animalia, shellfish, Gastropoda, class Cephalopoda, class Scaphopoda, phylum, mollusk, phylum Mollusca, animal kingdom



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