球房虫

[ noun ]
marine protozoan having a rounded shell with spiny processes
<noun.animal>

Globigerina \Glo*big`e*ri"na\, n.; pl. {Globigerin[ae]}. [NL.,
fr. L. globus a round body + gerere to bear.] (Zo["o]l.)
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}.