资料来源 : Webster's Revised Unabridged Dictionary (1913)

Rostrifera \Ros*trif"e*ra\, n. pl. [NL., fr. L. rostrum beak +
   ferre to bear.] (Zo["o]l.)
   A division of pectinibranchiate gastropods, having the head
   prolonged into a snout which is not retractile.