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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



... the case of the discovery of a skeleton of a Greenland whale in a fossil state, not a single cetaceous animal being known to exist, what naturalist would have ventured conjecture on the possibility of a carcass so gigantic being supported on the minute crustacea and mollusca living in the frozen seas ...
— A Naturalist's Voyage Round the World - The Voyage Of The Beagle • Charles Darwin

... aquatic, and especially sea birds, very numerous in individuals? Not because they are more prolific than others, generally the contrary; but because their food never fails, the sea-shores and river-banks daily swarming with a fresh supply of small mollusca and crustacea. Exactly the same laws will apply to mammals. Wild cats are prolific and have few enemies; why then are they never as abundant as rabbits? The only intelligible answer is, that their supply of food is more precarious. ...
— Journal of the Proceedings of the Linnean Society - Vol. 3 - Zoology • Various

... to the rocks between and among which at low tide the shell fish played in an inch or two of water; and sitting on one of the mossy stones Faith was watching the mimic play of evil passions which was going on among that tribe of Mollusca below her; but her mind was on ...
— Say and Seal, Volume II • Susan Warner

... 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 ...
— A New Voyage Round the World, in the years 1823, 24, 25, and 26, Vol. 2 • Otto von Kotzebue

... generally concurred in. It 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 turns ...
— Evolution and Ethics and Other Essays • Thomas H. Huxley



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



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