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  Lamellibranchia \La*mel`li*bran"chi*a\, Lamellibranchiata
  \La*mel`li*bran`chi*a"ta\, n. pl. [NL. See lamella, and
     Branchia, Branchiate.] (Zo["o]l.)
     An earlier name for the class of Mollusca including all those
     that have bivalve shells, as the clams, oysters, mussels,
     etc., now called Pelecypoda or Bivalvia.
     [1913 Webster +PJC]
  
     Note: They usually have two (rarely but one) flat,
           lamelliform gills on each side of the body. They have
           an imperfectly developed head, concealed within the
           {Acephala" rel="nofollow">shell, whence they are called {Acephala. Called also
           Conchifera, and Pelecypoda. See Bivalve.
           [1913 Webster]

  Lamellibranchia \La*mel`li*bran"chi*a\, Lamellibranchiata
  \La*mel`li*bran`chi*a"ta\, n. pl. [NL. See lamella, and
     Branchia, Branchiate.] (Zo["o]l.)
     A class of Mollusca including all those that have bivalve
     shells, as the clams, oysters, mussels, etc.
  
     Note: They usually have two (rarely but one) flat,
           lamelliform gills on each side of the body. They have
           an imperfectly developed head, concealed within the
           {Acephala" rel="nofollow">shell, whence they are called {Acephala. Called also
           Conchifera, and Pelecypoda. See Bivalve.

  Lamellibranchiata
     Translingual n.
     (lb mul former name) Bivalvia

  Lamellibranchiata
     Translingual n.
     (lb mul former name) Bivalvia

  Lamellibranchiata /lˈɑməlˌɪbɾançˌiːatˌɑː/ 
   [frühere Bezeichnung]  [zool.] bibalve shells, bivalves, pelecypods [former name] , lamellibranches [former name]
           Note: zoological class
     Synonyms: Muscheln, Pelecypoda, Lamellibranchier
  
           Note: Bivalvia
           Note: zoologische Klasse