globigerina

[Lat. globus a globe; gero =to carry, to have, to bear, and neut. plur. adj. suff. -ina.] 1. Zool .: The typical genus of the family Globi ger in ide, or Globi ger i nid a. Shell many-chambered, consisting of globose segments arranged in a turbinate spiral or irregularly disposed. The chambers open into a deep, central, umbilical depre ion. 2. Palæont .: The genus came into existence at least as early as the Chalk, and perhaps even in the Trias. [GLOBIGERINA-MUD.]