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prosobranchiata

prosobranchiata


  1  definition  found 
 
  From  Webster's  Revised  Unabridged  Dictionary  (1913)  [web1913]: 
 
  Prosobranchiata  \Pros`o*bran`chi*a"ta\,  n.  pl  [NL.,  fr  Gr  ? 
  forward,  further  +  ?  a  gill.]  (Zo["o]l.) 
  The  highest  division,  or  subclass,  of  gastropod  mollusks, 
  including  those  that  have  the  gills  situated  anteriorly,  or 
  forward  of  the  heart,  and  the  sexes  separate.