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HANDBOOK OF PROTOZOOLOGY 



chamber completely involute; aperture umbilicate or 

 along the sutures; fossil and recent. . .Family 38 Globigerinidae 



" Genus Globigerina d'Orbigny (Fig. 78, e) 



Early chambers globigerine, later ones spreading and com- 

 pressed; fossil and recent .Family 39 Globprotaliidae 



Genus Globorotalia Cushman 



Test trochoid at least in the young, aperture peripheral or 

 becoming dorsa.1 

 Mostly attached, dorsal side usually flattened; fossil and 



recent Family 40 Anom&linidae 



Fig. 78 a. Calcarina defrancci. X23 (After Brady). 



b. Halkyardia radiata. X13 (After Cushman). 



c. Cassidtdina laevigata. X25 (After Brady). 



d. Allomorphina trigona. X40 (After Brady). 



e. Glohigerina btdloides. X30 (After Kiihn). 



f. Anomalina punctulata. (After d'Orbigny). 



g. Rupertia stabilis. X50 (After Brady). 



Genus Anomalina d'Orbigny (Fig. 78, /) 



Later chambers in annular series; fossil and recent 



Family 41 Planorbulinidae 



Genus Planorbulina d'Orbigny 



Test trochoid in the very young, later growing upward 



Later chambers in a loose spiral; fossil and recent 



Family 42 Rupertiidae 



