bivalves
n., n. pl. [L. bis, two; valvae, a folding door]
A class of marine, estuarine or freshwater bivalve mollusks, in which the body is enclosed within two calcareous valves, or shells; other names for this class are Acephala, Conchifera, Pelecypoda, Conchophora, Dithra, Lamellibranchia, Lamellibranchiata, Elatobranchiata, Cormopoda, Tropipoda, Aglossa, Elatocephala, Anodontoda and Lipocephala.

Online Dictionary of Invertebrate Zoology. . 2005.

Look at other dictionaries:

  • BIVALVES — Les Bivalves (au sens large) sont des Mollusques au corps comprimé latéralement et enveloppé dans un repli tégumentaire, le manteau, doublé extérieurement d’une coquille comportant deux valves, l’une droite, l’autre gauche, dont la présence… …   Encyclopédie Universelle

  • Bivalves — Bivalvia Bivalves …   Wikipédia en Français

  • bivalves — bi·valve || baɪvælv adj. having two shells that are hinged together in the middle (of certain kinds of mollusks) n. mollusk with two shells that are hinged together in the middle (Zoology) …   English contemporary dictionary

  • Freshwater bivalves — are bivalve mollusks which live in freshwater, as opposed to saltwater. Although the majority of species of bivalve mollusks live in the sea, a number of different families of bivalves live in freshwater (and in some cases in freshwater and… …   Wikipedia

  • bivalve — bivalvular /buy val vyeuh leuhr/, adj. /buy valv /, n. 1. Also called lamellibranch. Zool. any mollusk, as the oyster, clam, scallop, or mussel, of the class Bivalvia, having two shells hinged together, a soft body, and lamellate gills. adj. 2.… …   Universalium

  • mollusk — molluskan, molluscan /meuh lus keuhn/, adj., n. mollusklike, adj. /mol euhsk/, n. any invertebrate of the phylum Mollusca, typically having a calcareous shell of one, two, or more pieces that wholly or partly enclose the soft, unsegmented body,… …   Universalium

  • Bivalvia — Taxobox name = Bivalvia fossil range = Cambrian Recent image width = 250px image caption = Acephala from Ernst Haeckel s Kunstformen der Natur , 1904 regnum = Animalia phylum = Mollusca classis = Bivalvia classis authority = Linnaeus, 1758… …   Wikipedia

  • MOLLUSQUES — L’embranchement des Mollusques est l’un des plus diversifiés de toute la zoologie, car il englobe plusieurs catégories bien distinctes d’espèces animales, qui toutes cependant répondent aux mêmes critères fondamentaux. Ces catégories forment pour …   Encyclopédie Universelle

  • Bivalvia — Bivalves Coquilles bivalves …   Wikipédia en Français

  • Mollusca — Temporal range: Cambrian–Recent …   Wikipedia

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