Plate 55. VINCENTOWN GLOBOROTALIA 



(All figures: a, spiral view; b, umbilical view; C, edge view; all X 110) 



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P'iGURE 1. Globorotalia apanthesma Loeblich and 187 

 Tappan, new species 



Paratype (USNM PS861), showing relatively 

 large size, gently convex spiral side, keeled 

 periphery, angular conical to angular truncate 

 chambers, open umbilicus and angled umbilical 

 shoulder. 

 Figures 2, 6, 7. Globorotalia angulata (White) 187 



Hypotypes (USNM P5127a-c), showing me- 

 dium size, flattened spiral side, strongly lobulate 

 peripheral outline, subacute to rounded periphery 

 and spinose surface, especially in the umbilical 

 region, narrow umbilicus and rounded umbilical 

 shoulder. 

 Figure 3. G/o^oroia/ja occ/j^ja Loeblich and Tappan, 191 

 new species 



Paratype (USNM PS866), showing flat spiral 

 202 



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side, low convexity of umbilical side, few cham- 

 bers and small umbilicus. 



Figures 4, S. Globorotalia acuta Toulmin 185 



Hypotypes (USNM PS 141 a, b), showing flat 

 spiral side, with crescentic appearing chambers, 

 strongly inflated umbilical side, with limbate and 

 rugose umbilical shoulder, broad and open um- 

 bilicus, and broad, low aperture with nearly tri- 

 angular apertural flaps. Chambers are strongly 

 angular truncate in edge view, and the limbate 

 umbilical shoulder gives the appearance of a 

 doubly keeled test. 



Figure 8. Globorotalia aequa (.^) Cushman and Renz 186 

 Atypical hypotype (USNM PS888), with more 

 rounded chambers than is usual in the species, 

 and with a bulla-like final chamber. 



