Scutibranchiata

1 definition found

From The Collaborative International Dictionary of English v.0.48 [gcide]:

  Scutibranchiata \Scu`ti*bran`chi*a"ta\, n. pl. [NL. See
     {Scutum}, and {Branchia}.] (Zool.)
     An order of gastropod Mollusca having a heart with two
     auricles and one ventricle. The shell may be either spiral or
     shieldlike.
     [1913 Webster]


  
     Note: It is now usually regarded as including only the
           Rhipidoglossa and the Docoglossa. When originally
           established, it included a heterogenous group of
           mollusks having shieldlike shells, such as Haliotis,
           Fissurella, Carinaria, etc.
           [1913 Webster]