cow sharks


From The Collaborative International Dictionary of English v.0.48:

Notidanian \No`ti*da"ni*an\, n. [Gr. ? back + ? comely.] (Zool.)
   Any one of several species of sharks of the family
   Notidanidae, or Hexanchidae. Called also cow sharks.
   See Shark.
   [1913 Webster]
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