Source : Webster's Revised Unabridged Dictionary (1913)

Decacerata \De*cac`e*ra"ta\, n. pl. [NL., fr. Gr. de`ka ten +
   ke`ras a horn.] (Zo["o]l.)
   The division of Cephalopoda which includes the squids,
   cuttlefishes, and others having ten arms or tentacles; --
   called also {Decapoda}. [Written also {Decacera}.] See
   {Dibranchiata}.