PLATE 10 



(All figures approximately x 76) 



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



Figs. ia-c. Transitional form between Globotruncana stuarti subspinosa Pessagno 

 and G. stuarti stuarti (de Lapparent), from S.16, W. El-Sharawna section. P.45557 



Figs. 2a-3c Globotruncana stuarti subspinosa Pessagno. Hypotypes, from S.i8, 

 W. El-Sharawna section. P.45559 



