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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



... Conservatory and down the Eastern Arcade—in which will be arranged alg, sponges, mollusca, star-fish, worms used for bait, insects which destroy spawn or which serve as food for fish, etc.—on turning to the left, we find ourselves in the fish market, which will probably vie with the aquaria on ...
— Scientific American Supplement, No. 385, May 19, 1883 • Various

... and our poor operatives would thank us more for a little innocent amusement than for those lectures, which they may be excused for thinking rather dull, since even you fell asleep when Professor Long got into the multilocular shell of the very first class of cephalous mollusca; and it is my belief that harmless laughter has a good moral effect upon the working class,—only don't spread it about that I said so, for we know excellent persons of a serious turn of mind whose opinions that sentiment ...
— What Will He Do With It, Complete • Edward Bulwer-Lytton

... were most abundant, the highest molluscs existed also, their remains being found in the Bala limestone, which is the lowest bed of molluscous fossils. (See Silurian System, p. 308.) The number of these higher species is not important. They existed, few or many, as early as any other of the mollusca. If the lower had not an anterior existence, the higher were not developed from them. It is also a conclusive argument against the system, that while the intermediate mollusca are very numerous, ...
— The Christian Foundation, Or, Scientific and Religious Journal, Volume I, No. 7, July, 1880 • Various

... 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 ...
— The Testimony of the Rocks - or, Geology in Its Bearings on the Two Theologies, Natural and Revealed • Hugh Miller

... strewn in wild confusion. By the action of untold ages the connecting cement is worn away from between the pebbles, leaving them prominent; and wherever the attrition of the sea has loosened one from its bed, the hollow has become the habitation of Mollusca and Algae. ...
— Atlantic Monthly, Volume 2, Issue 11, September, 1858 • Various

... State Natural History Society, then engaged 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

... examinations and inquiries, during the voyage. Concerning the nautilus and whale, I learned more through this accomplished seaman than I had ever learned before. The first by examination of the mollusca, which were frequently caught by Captain L. for my accommodation—and of the latter, by oral information received from him (who had been a great whaler) on frequently observing those huge monsters during ...
— Official Report of the Niger Valley Exploring Party • Martin Robinson Delany



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