PLATE 18 



(All figures approximately X 76) 



a, dorsal view ; b, side view ; c, ventral view 



Figs. ia-c. Globorotalia uncinata uncinata Bolli. Hypotype, from S.34, Gebel 

 Owaina section. P.45636 



Figs. 2a-c. Globorotalia tribulosa Loeblich & Tappan. Hypotype, from S.32, Gebel 

 Owaina section. P. 45630 



Figs. 3a-c. Globorotalia pseudobulloid.es (Plummer). Hypotype, from S.38, Gebel 

 Owaina section showing a slightly extraumbilical aperture. P.45621 



Figs. 4a-c. Globorotalia quadrataWhite. Hypotype, from S. 7, Gebel El-Kilabiya section, 

 showing a very slightly extraumbilical aperture. P. 45627 



Figs. 5a-c. Transitional stage between Globorotalia trinidadensis Bolliand Globorotalia 

 uncinata uncinata Bolli. P.45632 



Figs. 6a-c. Globigerina arabica sp. nov. Holotype, from S.30, Gebel Owaina section. 



P-4557Q- 



Figs. 7a-c. Globorotalia trinidadensis Bolli. Hypotype, from S.7, Gebel El-Kilabiya 

 section. P.45631 



