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brachiopoda

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brachiopoda


  2  definitions  found 
 
  From  Webster's  Revised  Unabridged  Dictionary  (1913)  [web1913]: 
 
  Brachiopoda  \Brach`i*op"o*da\,  n.  [NL.,  from  Gr  ?  arm  +  -poda.] 
  (Zo["o]l.) 
  A  class  of  Molluscoidea  having  a  symmetrical  bivalve  shell, 
  often  attached  by  a  fleshy  peduncle. 
 
  Note:  Within  the  shell  is  a  pair  of  ``arms,''  often  long  and 
  spirally  coiled,  bearing  rows  of  ciliated  tentacles  by 
  which  a  current  of  water  is  made  to  flow  into  the 
  mantle  cavity,  bringing  the  microscopic  food  to  the 
  mouth  between  the  bases  of  the  arms.  The  shell  is  both 
  opened  and  closed  by  special  muscles.  They  form  two 
  orders  Lyopoma,  in  which  the  shell  is  thin,  and 
  without  a  distinct  hinge,  as  in  Lingula;  and 
  Arthropoma,  in  which  the  firm  calcareous  shell  has  a 
  regular  hinge,  as  in  Rhynchonella.  See  {Arthropomata}. 
 
  From  WordNet  r  1.6  [wn]: 
 
  Brachiopoda 
  n  :  marine  invertebrates  that  resemble  mollusks  [syn:  {Brachiopoda}, 
  {phylum  Brachiopoda}] 




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