FAMILY 39. GLOBIGERINIDAE 303 



Subfamily 1. Globigerininae 



Wall clothed with fine spines, typically trochoid but in some 

 genera becoming planispiral ; wall often cancellated, coarsely 

 perforate. 



Genus GLOBIGERINA d'Orbigny, 1826 



Plate 45, figures 18-20; plate 47, figures 1-3; plate 48, figure 1 

 Genotype, by designation, Globifjerina buUoides d'Orbigny 

 Globifierina D Orbigny, Ann. Sci. Nat., vol. 7, 1826, p. 277. 

 Rotalia (part) of authors. 

 Khyiichospira Ehrenberg, Bericht. k. preuss. Akad. Wiss. Berlin, 1845, 



p. 358 (genoholotype, Rhynchospira indica Ehrenberg). 

 Phanerostomum (part) Ehrenberg, 1854. 

 Ptijgostomum (part) Ehrenberg, 1854. 

 Planalina (part) Ehrenberg, 1854 (not d'Orbigny). 

 Pylodexia Ehrenberg, Monatsber. k. preuss, Akad. Wiss. Berlin, 1858, 



p. 27 (genotype, by designation, Pylodexia tctratrias Ehrenberg). 



Test trochoid throughout, umbilicate, chambers in the young 

 especially of the microspheric form in a flattened trochoid form 

 like Discorbis usually smooth and the wall thin, later chambers 

 globular ; wall thick and cancellated, in well preserved, especial- 

 ly pelagic specimens, clothed with long slender spines coming 

 from the angles of the cancellated surface areas, the base of such 

 areas with the pores of the wall, calcareous; aperture large, 

 opening into the umbilicus. 



Cretaceous to Recent. 



Genus GLOBIGERINOIDES Cushman, 1927 



Plate 45, figures 21-23; plate 48, figure 6 

 Genoholotype, Globigerina rubra d'Orbigny 

 Globigerinoides Cushman, Contr. Cushman Lab. Foram. Res., vol. 3, 



1927, p. 87. 

 Globigerma (part) of authors. 



Test usually trochoid throughout; aperture as in Globigerina 

 with numerous large, supplementary apertures around the 

 margin of the chamber, opening into the chamber and some of 

 them into the umbilical area, surface in the well preserved 

 specimens clothed with fine spines. 



Tertiary and Recent. 



