The Collaborative International Dictionary of English v.0.48:

Globigerina \Glo*big`e*ri"na\, n.; pl. Globigerin[ae]. [NL.,
   fr. L. globus a round body + gerere to bear.] (Zool.)
   A genus of small Foraminifera, which live abundantly at or
   near the surface of the sea. Their dead shells, falling to
   the bottom, make up a large part of the soft mud, generally
   found in depths below 3,000 feet, and called globigerina
   ooze. See Illust. of Foraminifera.
   [1913 Webster]

WordNet (r) 3.0 (2006):

globigerina
    n 1: marine protozoan having a rounded shell with spiny
         processes