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  2  definitions  found 
  From  Webster's  Revised  Unabridged  Dictionary  (1913)  [web1913]: 
  {Vertebrata},  including  Mammalia  or  Mammals,  Aves  or  Birds, 
  Reptilia,  Amphibia,  Pisces  or  Fishes,  Marsipobranchiata 
  (Craniota);  and  Leptocardia  (Acrania).  {Tunicata},  including  the 
  {Thaliacea},  and  {Ascidioidea}  or  Ascidians.  {Articulata}  or 
  {Annulosa},  including  Insecta,  Myriapoda,  Malacapoda,  Arachnida, 
  Pycnogonida,  Merostomata,  Crustacea  (Arthropoda);  and  Annelida, 
  Gehyrea  (Anarthropoda). 
  From  Webster's  Revised  Unabridged  Dictionary  (1913)  [web1913]: 
  Ascidioidea  \As*cid`i*oid"e*a\,  n.  pl  [NL.,  fr  ascidium  + 
  -oid.  See  {Ascidium}.]  (Zo["o]l.) 
  A  group  of  Tunicata,  often  shaped  like  a  two-necked  bottle. 
  The  group  includes,  social,  and  compound  species.  The  gill  is 
  a  netlike  structure  within  the  oral  aperture.  The  integument 
  is  usually  leathery  in  texture.  See  Illustration  in  Appendix.