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mollusca    
n. 软体动物类

软体动物类

Mollusca
n 1: gastropods; bivalves; cephalopods; chitons [synonym:
{Mollusca}, {phylum Mollusca}]

Mollusca \Mol*lus"ca\, prop. n. pl. [NL. See {Mollusk}.] (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.
[1913 Webster PJC]

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}.
[1913 Webster]


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  • Mollusca - Wikipedia
    Molluscs are the largest marine phylum, comprising about 23% of all the named marine organisms They are highly diverse, not just in size and anatomical structure, but also in behavior and habitat, as numerous groups are freshwater and even terrestrial species
  • Mollusk | Definition, Characteristics, Shell, Classification, Facts . . .
    mollusk, any soft-bodied invertebrate of the phylum Mollusca, usually wholly or partly enclosed in a calcium carbonate shell secreted by a soft mantle covering the body
  • Mollusk - Definition, List, Examples, Characteristics, and Image
    Mollusks or Molluscs are a group of soft-bodied invertebrates distributed across marine, freshwater, and terrestrial habitats 1 They belong to the phylum Mollusca, the second largest after Arthropoda, with around 76,000 extant species worldwide, accounting for around 23% of all marine species
  • Phylum Mollusca- characteristics, classification, examples
    Mollusca (mollusks) are classified into 6 classes according to their symmetry and the characters of food, shell, mantle, gills, nervous system, muscles, and radula
  • Phylum Mollusca | manoa. hawaii. edu ExploringOurFluidEarth
    The phylum Mollusca is the second-largest animal phylum, with over 100,000 species The molluscs include many familiar animals, including clams, snails, slugs, and squid, as well as some less familiar animals, like tusk shells and chitons (Fig 3 51 A)
  • Phylum Mollusca: Characteristics, Classification, and Importance
    The term “Mollusca” comes from the Latin word mollis, meaning soft, referring to the soft-bodied nature of these animals Members of this phylum are known as mollusks or molluscs and are found in a wide range of habitats, from deep oceans and freshwater bodies to terrestrial environments
  • MolluscaBase
    MolluscaBase is a taxonomically oriented database that aims to provide an authoritative, permanently updated account of all molluscan species – marine, freshwater, and terrestrial, extant and fossil, and across all classes
  • The Mollusca - University of California Museum of Paleontology
    Mollusca is one of the most diverse groups of animals on the planet, with at least 50,000 living species (and more likely around 200,000) It includes such familiar organisms as snails, octopuses, squid, clams, scallops, oysters, and chitons
  • List of mollusks | Gastropods, Bivalves, Cephalopods, Taxonomy . . .
    Mollusks are soft-bodied invertebrates of the phylum Mollusca, usually wholly or partly enclosed in a calcium carbonate shell secreted by a soft mantle covering the body
  • Mollusks | MarineBio
    Mollusks are a diverse group of invertebrate animals that belong to the phylum Mollusca They are soft-bodied creatures, typically protected by a hard shell, although some mollusks lack shells or have reduced shells





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